839:
949:
493:
674:
569:
666:
788:
919:
result, a $ 200-million (equivalent to $ 496 million in 2023) project widened the road between I-495 and MD 118 to its current configuration since
October 12, 1990, with some portions being widened from 6 to 12 lanes. HOV lanes were later added on December 19, 1996. This widening led to growth of residences and businesses along the I-270 corridor as far north as Germantown and increased traffic counts along the road. Much of I-270 in Montgomery County is now a hub for
748:
1912:
2103:
2030:
1185:
1160:
1367:
1166:
1057:
988:(USDOT) to extend its review period for the I-270 toll lane proposal, citing the need for additional time for local agencies and the public to review the environmental analysis. In July 2022 advocates of public transit questioned the validity of Maryland DOT's traffic models for the proposed highway widening project, in a letter submitted to USDOT. In August 2022 the FHWA announced a delay in its review of the proposed project.
1179:
1666:
1630:
1556:
1544:
1470:
1440:
1422:
1392:
1271:
1126:
1076:
352:
337:
121:
1763:
1727:
1596:
1298:
148:
1836:
1590:
1434:
1070:
1386:
1919:
28:
2159:
1830:
1550:
1428:
1380:
811:, while another proposal had the freeway going around Cabin John and connect with Macarthur Boulevard in Maryland. Bethesda residents objected to idea of a freeway running through residential areas. The NCPC agreed, and it approved the western route two years later. Further details about the routing were released in 1949, and construction began with the northern section in February 1950.
1970:
six-lane freeway. The left lane in each direction serves as a HOV lane for carpools with two or more people that is in operation between 3:30 and 6:30 pm on weekdays in the northbound direction and between 6:00 and 9:00 am on weekdays in the southbound direction. I-270 Spur continues north through wooded suburban areas to an interchange with
Democracy Boulevard adjacent to the
2109:
2036:
1842:
1373:
1191:
1172:
1063:
188:
162:
116:
3931:
1799:
183:
3599:
612:. Past I-370, the local lane configuration ends in the southbound direction, which now has an HOV lane and four travel lanes while the northbound direction still has an HOV lane, three express lanes, and two local lanes. I-270 continues past more suburban development before coming to a northbound exit and southbound entrance with
533:). From there, I-270 continues west as a 10-lane freeway and merges with I-270 Spur, which provides access to and from southbound I-495. Past this interchange, I-270 continues north as a 12-lane freeway with an HOV lane and five travel lanes in each direction. The route passes through wooded suburban areas, where, prior to the
2404:
834:
determined that a portion of Monroe Street in
Rockville should be closed in order to avoid building a costly overpass to continue the road to the west side of the new freeway. The Montgomery County Council had opposed the idea, but it ultimately withdrew its opposition because the federal government
918:
The concurrent US 240 designation was removed from I-70S in 1972. On May 18, 1975, I-70S was designated I-270, with I-70N becoming simply I-70. The western spur is now signed and publicly known simply as I-270 Spur. By the 1980s, traffic congestion had grown on I-270 in
Montgomery County; as a
524:
for carpools with two or more people in the northbound direction between 3:30 and 6:30 pm on weekdays and in the southbound direction between 6:00 and 9:00 am on weekdays. At the southern terminus, I-270 only has access to and from the eastbound direction of I-495. The road turns west and
479:
from the
Capital Beltway; however, they were canceled in the 1970s due to opposition from residents in the freeway's path. The concurrent US 240 designation was removed in 1972 and I-70S became I-270 in 1975. Increasing traffic levels led to a $ 200-million (equivalent to $ 496 million in
1974:
shopping mall. A short distance later, the road has a southbound exit and northbound entrance for the HOV lanes onto
Fernwood Road. Past here, I-270 Spur merges into northbound I-270 with separate ramps for the travel lanes and the HOV lanes. Before 1975, when I-270 was called I-70S, this road was
649:
near the
Clarksburg Premium Outlets, and the northbound HOV restriction ends past this interchange, with I-270 continuing north as a four-lane freeway. The power lines stop paralleling the route, and it continues through more rural areas of woods and farms, running closely parallel to MD 355.
956:
MDSHA is studying improvements for the I-270 corridor between Shady Grove Road and
Frederick. Options for improvement include widening the highway to include more lanes with HOV and HOT lanes, as well as initiating rapid bus or light rail service along I-270 between Shady Grove and Clarksburg. In
886:
north to the
Capital Beltway. In a 1971 study by DeLeuw, Cather Associates and Harry Wesse & Associates, LTD, I-70S was planned to run from its southern terminus at I-495 and run concurrent with that route before turning south on the North Central Freeway and ending at I-95 in Washington. The
1969:
off I-270 that connects I-270 and the
Capital Beltway. It carries traffic headed southbound on I-270 to southbound I-495 and from northbound I-495 to northbound I-270, filling in the missing movements not available at the interchange between I-270 and I-495. The road heads north from I-495 as a
926:
In Montgomery County, an interchange was constructed to allow northbound and southbound I-270 access both to and from Watkins Mill Road in Gaithersburg. This interchange connects the eastern and western portions of Watkins Mill Road by a new overpass. In addition, a new southbound exit ramp at
838:
624:
at Watkins Mill Road, after which they end. From there, I-270 heads northwest as an eight-lane freeway with four southbound lanes, an HOV lane, and three travel lanes northbound. It passes through wooded areas, leaving Gaithersburg and comes to an interchange with Middlebrook Road. The freeway
931:
and Gaithersburg Medical Center. The goal of the project was to lower congestion on I-270, MD 355, and MD 124. The State of Maryland approved the $ 99.71-million (equivalent to $ 122 million in 2023) project in July 2017, and construction began on July 11, 2017, with Governor
846:
The US 240 freeway was extended south to Montrose Road in December 1957. I-70S was designated onto the US 240 freeway in 1959, while I-70N was designated onto the US 40 freeway to Baltimore. On December 17, 1958, the freeway extension to Old Georgetown Road opened.
948:
3476:
616:(West Diamond Avenue). Past this interchange, the southbound HOV restrictions end and I-270 continues north with four travel lanes in the southbound direction and an HOV lane, three express lanes, and two local lanes in the northbound direction before reaching
492:
818:
A group of people opposed any highway in Rockville because of the perceived increase in traffic, and the group had threatened to form a human chain in the middle of the freeway, but they did not carry through with their threat. The freeway's extension to
877:
corridor. In the mid-1960s, a study was proposed for the freeway that recommended several different routings between Washington, D.C., and the Capital Beltway. By 1966, a route for the North Central Freeway was planned along a
903:(FHWA) officially approved withdrawal of plans to construct the road south of the Capital Beltway. Similar opposition also affected I-70N's eastward extension into Baltimore proper, although a small part of its planned spur,
957:
September 2017, Governor Larry Hogan announced a plan to widen the entire length of I-270 by four lanes, adding HOT lanes to the median, as part of a $ 9-billion proposal to widen roads in Maryland. The project would be a
814:
On January 25, 1953, the US 240 freeway was completed between Frederick to Urbana. The freeway's extension to Hyattstown opened on June 10, 1953. The extension to MD 118 in Germantown opened September 15, 1954.
673:
447:
as a six- to eight-lane highway with an HOV lane in the northbound direction only. North of here, I-270 continues through rural areas into Frederick County and toward the city of Frederick as a four-lane freeway.
995:
and a portion of I-495 leading to the junction with I-270. The application did not include funding for improvements to I-270, but the state intends to include I-270 improvements in future grant applications.
568:
835:
had agreed to add and pay for a freeway interchange with Montrose Road, which had not been in the freeway's original plan. In 1956, the US 240 freeway was completed from US 15 north to US 40.
807:(present-day MD 355) north of Gaithersburg, while another proposal had the freeway continuing to Hagerstown. South of Bethesda, one proposal had the freeway connecting with Macarthur Boulevard in the
3477:"The Maryland-National Capital Park and Planning Commission Provides Position on State's Recommended Alternatives Retained for Detailed Study for the Interstate 495 and Interstate 270 Managed Lanes Study"
850:
With the completion of the freeway, the original US 240 was newly designated MD 355. The construction of the Washington National Pike resulted in suburban growth along the corridor between
3270:
980:
In June 2021, the project was omitted by the Washington Council of Government's Transportation Planning Board, calling its future into question. In June 2022 Montgomery County Executive
3454:
803:(NCPC) announced plans to build a freeway through Montgomery County. The freeway would bypass Bethesda, Rockville, and Gaithersburg. Under one proposed route, the freeway would end at
549:
configuration with the outer two lanes serving as local lanes and the inner three lanes and the HOV lane serving as express lanes. Past Montrose Road, I-270 continues north into the
977:(M-NCPPC) sent a letter of nonconcurrence to MDSHA, triggering a mediation process with MDSHA. The M-NCPPC has jurisdiction over parkland MDSHA will need for its proposal.
480:
2023) widening of the road in Montgomery County to its current configuration. Many improvements are slated for I-270, including the widening of the route that would add
411:. It consists of the 32.6-mile (52.5 km) mainline as well as a 2.1-mile (3.4 km) spur that provides access to and from southbound I-495. I-270 is known as the
439:(HOV lanes) that are in operation during peak travel times. North of the Gaithersburg area, the road continues through the northern part of Montgomery County, passing
3559:
3305:
895:
neighborhoods who were successful in getting the freeway canceled through their neighborhoods in 1970. The North Central Freeway within Maryland was canceled by the
3525:
284:
693:(Fingerboard Road). The highway briefly runs along the east side of MD 80 past this interchange before continuing through agricultural areas. It features a
3361:
974:
3336:
565:(Montgomery Avenue). Past MD 28, the freeway passes numerous business parks and some wooded areas before coming to an interchange with Shady Grove Road.
3574:
2914:
2874:
2814:
2705:
2685:
725:(Baltimore National Pike). Past this interchange, the freeway continues north as the Frederick Freeway, a part of US 40 that interchanges with
637:(Ridge Road) and Father Hurley Boulevard. Past MD 27, I-270 heads into more rural areas of woods with some farm fields, paralleled by a set of
3387:
3279:
2663:
625:
narrows to six lanes again past at this interchange, with three lanes in each direction, including a northbound HOV lane. I-270 continues into the
3649:
992:
862:
moving their headquarters to Montgomery County. A western spur that provided access to southbound I-495 was eventually built and became I-270.
3979:
2182:
3984:
3769:
2563:
Roberts, Chalmers M. "30-Year Plan For District Revives Old Road Feuds: Through Highway Linking Downtown To Montgomery Seen Biggest Need".
2854:
3158:
907:(now US 40, as the freeway never connected to any other Interstate), was built and opened in 1979. I-70 was eventually truncated to
2519:
985:
3989:
3974:
2974:
3889:
3865:
305:
3431:
3969:
3846:
3812:
855:
561:(Falls Road), where the highway sees 253,620 vehicles daily. The road continues to a modified cloverleaf interchange with
501:
388:
3540:
3719:
896:
274:
1879:
3827:
3788:
3313:
800:
279:
965:
voted 2â1 in favor of the proposal to construct express toll lanes along I-270, with Governor Hogan and State Comptroller
3636:
3631:
3499:
3243:
2550:"NCPPC Plan For Freeway From North Is Revealed: Details Announced For Highway From Montgomery Into District, Virginia".
3710:
3046:
Goldstein, Wayne (April 26, 2007). "Will ICC Right-of-Way Become Future Parkland?". Montgomery County Civic Federation.
2183:"Route Log â Auxiliary Routes of the Eisenhower National System Of Interstate and Defense Highways â Table 2"
451:
The freeway was built between 1953 and 1960 as the Washington National Pike between Bethesda and Frederick and carried
315:
289:
3455:"Divided Maryland Board of Public Works OKs public-private partnership for highway expansion after explosive hearing"
310:
940:
in attendance for a groundbreaking ceremony. The project was completed on June 11, 2020, a month ahead of schedule.
633:(Germantown Road). A short distance later, after passing by some business parks, I-270 comes to an interchange with
3875:
3832:
3793:
3745:
3016:
2040:
1199:
1080:
124:
887:
routing of the freeway through residential areas of Washington drew opposition from residents of the Takoma Park,
2348:
892:
831:
792:
2936:
961:
with private companies responsible for constructing, operating, and maintaining the lanes. On June 5, 2019, the
3883:
3186:
Melton, RH (January 25, 1984). "Highway panel sets 12 lanes for I-270: I-270 width would be doubled in 1990s".
3064:
2186:
1195:
962:
958:
900:
554:
320:
698:
859:
376:
2995:
2953:
2138:
1988:
1035:
888:
879:
717:. I-270 continues through commercial areas before coming to its northern terminus at an interchange with
597:
513:
436:
396:
269:
238:
2660:
3764:
1706:
928:
866:
682:
476:
408:
242:
2746:
Elder, Shirley (May 13, 1956). "Mayor Proposes 'Human Barricade' To Block Pike Opening at Rockville".
911:(the Baltimore Beltway) in 2014, with the freeway to its former terminus designated, but unsigned, as
665:
3903:
3897:
3840:
3822:
3801:
3759:
3753:
3648:
2434:
2250:
1861:
1847:
1806:
1802:
908:
904:
726:
722:
718:
605:
460:
400:
261:
195:
191:
60:
1855:
1106:
481:
419:. Most of the southern part of the route in Montgomery County passes through suburban areas around
3086:
3783:
3777:
3500:"Maryland toll lanes plan removed from key environmental analysis, jeopardizing federal approval"
1088:
297:
3964:
3703:
1339:
1092:
714:
577:
546:
534:
432:
424:
169:
3479:. Silver Spring, MD: The Maryland-National Capital Park and Planning Commission. June 12, 2019
2268:
705:. I-270 eventually leaves the battlefield area and continues into the commercial outskirts of
3870:
3860:
3854:
3739:
3560:"Federal agency delays Md. toll lanes plan; Hogan urges Biden to reverse "outrageous" action"
3193:
2897:
2837:
2797:
2774:
2751:
2731:
2641:
2621:
2601:
2581:
2526:
2281:
2163:
1778:
1738:
1681:
1677:
1313:
883:
3215:
1250:
Signed as exits 4A (east) and 4B (west); northbound exit 4A also serves Tower Oaks Boulevard
1971:
1810:
1685:
1673:
1650:
1641:
1614:
1568:
1511:
1309:
808:
655:
646:
626:
444:
440:
3087:"U.S. Route Numbering Subcommittee Agenda Showing Action Taken by the Executive Committee"
8:
3526:"Elrich urges U.S. DOT to delay decision on toll lanes; Traffic expert slams state study"
3248:
3220:
3188:
2118:
2114:
1851:
1814:
1774:
1747:
1305:
1255:
1224:
1133:
873:. Plans for this freeway initially began in 1959 when a freeway was called for along the
824:
767:
706:
621:
589:
550:
530:
420:
404:
199:
155:
991:
In August 2023, Maryland DOT applied for a federal grant to support improvements on the
787:
3817:
3060:
1984:
1938:
1770:
1669:
1633:
1604:
1564:
1560:
1473:
1448:
1444:
1400:
1274:
1244:
1129:
1096:
1084:
1040:
952:
View south along I-270 at I-370 in Gaithersburg, at the north end of proposed HOT lanes
912:
865:
I-70S was projected to continue past the Capital Beltway into Washington, D.C., on the
771:
702:
659:
642:
630:
617:
613:
601:
558:
542:
526:
509:
505:
456:
392:
355:
340:
132:
128:
3089:(Report). Washington, DC: American Association of State Highway Officials. p. 424
1479:
Quince Orchard Road not signed northbound; no direct northbound access to MD 124 south
3696:
3663:
3640:
2302:
2048:
1766:
1730:
1600:
1301:
1207:
820:
710:
690:
634:
562:
151:
3688:
899:(MDSHA) in 1972 due to opposition from officials in Montgomery County. In 1975, the
795:
map of Washington, D.C., showing a proposed Interstate Highway running to Frederick.
620:(Quince Orchard Road). Past MD 124, the northbound local lanes continue to the
1734:
1711:
851:
686:
609:
593:
472:
3658:
1528:
Northbound exit and southbound entrance; signed as exits 13A (east) and 13B (west)
2667:
1637:
694:
3197:
2901:
2841:
2801:
2792:
Stern, Lawrence (September 2, 1956). "Montgomery Council Clears Pike Obstacle".
2778:
2755:
2735:
2645:
2625:
2605:
2585:
2329:
1783:
Signed as exits 31A (north) and 31B (south); Market Street not signed southbound
3918:
3807:
3575:"State seeks federal grant to rebuild American Legion Bridge, I-495 toll lanes"
3409:
2460:
McDevitt, Betty. "Express Highway System Plans Revealed for Md.-Capital Area".
2334:
2044:
1396:
1203:
966:
874:
804:
730:
581:
452:
165:
3388:"New I-270 interchange in Montgomery Co. to ease congestion and boost economy"
3133:
2892:
Anderson, J.W. (December 18, 1958). "Montgomery Section Of Route 240 Opened".
2082:
3958:
3725:
1240:
927:
exit 11 (MD 124) was built. The exit provides better access to the
870:
651:
585:
538:
468:
218:
3678:
3673:
3668:
923:
firms. By 1999, congestion on the road grew to then-projected 2010 levels.
685:, continuing northwest through rural woodland and farmland. It reaches the
431:
firms. This portion of I-270 is up to 12 lanes wide and consists of a
3432:"Hogan proposes $ 9B plan to add new lanes to Beltway, 270 and BW Parkway"
3337:"Governor, County Executive Break Ground for New Watkins Mill Interchange"
3108:
3683:
3604:
2409:
981:
937:
933:
3024:
3020:
1966:
970:
638:
380:
681:
A short distance past the MD 109 interchange, I-270 crosses into
2248:
3541:"Toll lane critics cite possible flaws in Maryland traffic analysis"
2520:"Major transportation milestones in the Baltimore region since 1940"
3163:
521:
384:
228:
2085:
2079:
1911:
747:
496:
I-270 northbound near the exit for Montrose Road in North Bethesda
3084:
920:
517:
459:(MD 355) between these two points. With the creation of the
428:
3684:
I-270 (Washington National Pike) at Steve Anderson's DCRoads.net
1406:
Signed as exits 9A (I-370) and 9B (Sam Eig); exits 1A-B on I-370
2941:
DeLeuw, Cather Associates and Harry Wesse & Associates, LTD
2912:
2872:
2852:
2812:
2703:
2683:
2435:"High-Occupancy Vehicle (HOV) Lanes Frequently Asked Questions"
1796:
1524:
1467:
1419:
1156:
882:
line running through the northeastern part of Washington and
854:, and Frederick, with several federal agencies including the
576:
Past this interchange, I-270 leaves Rockville and heads into
68:
3278:(Map). Maryland State Highway Administration. Archived from
2128:
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
1869:
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
467:
along with US 240. There were plans to extend I-70S to
2249:
Highway Information Services Division (December 31, 2013).
1280:
842:
I-270 Spur at split from southbound I-270 in North Bethesda
650:
The median widens, with trees in the middle, and I-270 has
572:
I-270 northbound at the Middlebrook Road exit in Germantown
1819:
Northbound exit and southbound entrance; exit 53A on I-70
1139:
Signed as exits 1A (MD 187) and 1B (Rockledge) northbound
3244:"In Biotech Hubs, Labs Play A Vital Role in the Culture"
1918:
27:
697:
in the northbound direction as the road passes through
2726:"Disputed Stretch of Pike Opens Calmly at Rockville".
2086:
Southbound exit and northbound entrance from HOV lanes
975:
Maryland-National Capital Park and Planning Commission
3718:
2053:
Southern terminus; exit 38 on I-495 (Capital Beltway)
733:
a short distance north of I-270âs northern terminus.
529:(Old Georgetown Road) and Rockledge Drive (unsigned
3085:U.S. Route Numbering Subcommittee (June 20, 1972).
1818:
1793:
1527:
1521:
1506:
Northern terminus of northbound local-express lanes
1478:
1464:
1453:
1416:
1350:
Northern terminus of southbound local-express lanes
1211:
1153:
3216:"Md.'s Lesson: Widen the Roads, Drivers Will Come"
2922:(Map). Baltimore: Maryland State Roads Commission.
2882:(Map). Baltimore: Maryland State Roads Commission.
2862:(Map). Baltimore: Maryland State Roads Commission.
2822:(Map). Baltimore: Maryland State Roads Commission.
2713:(Map). Baltimore: Maryland State Roads Commission.
2693:(Map). Baltimore: Maryland State Roads Commission.
2327:
455:(US 240), which was rerouted off what is now
3306:"New Watkins Mill interchange will delay traffic"
2323:
2321:
2319:
1476:(Montgomery Village Avenue / Quince Orchard Road)
3956:
2996:"1966 North Central Freeway Supplementary Study"
2525:. Baltimore Metropolitan Council. Archived from
3650:Template:Attached KML/Interstate 270 (Maryland)
2328:Johnston, Louis; Williamson, Samuel H. (2023).
500:I-270 heads northwest from an interchange with
96:
3272:I-270 at Watkins Mill Road Interchange Project
2576:"Section Of Washington Pike To Be Dedicated".
2316:
2244:
2242:
2240:
2238:
2236:
2234:
2232:
2230:
2228:
2226:
2224:
1132:(Old Georgetown Road) / Rockledge Drive (
689:area, where the route has an interchange with
463:a few years later, the road was designated as
415:, and makes up the easternmost stretch of the
3704:
3434:. Washington, DC: WTOP-FM. September 21, 2017
3362:"Interchange Construction Begins This August"
2222:
2220:
2218:
2216:
2214:
2212:
2210:
2208:
2206:
2204:
801:National Capital Park and Planning Commission
709:. Here, the road reaches an interchange with
604:(Intercounty Connector), which heads east to
553:area, turning northwest before it comes to a
2931:
2929:
2501:
2499:
1603:north / Father Hurley Boulevard â
48:I-270 highlighted in red; I-270 Spur in blue
3354:
2906:
2866:
2846:
2806:
2765:
2763:
2722:
2720:
2697:
2677:
2489:"Freeway Route Study Urged Before Action".
2473:"Bethesda Chamber Approves Proposed Road".
1609:Signed as exits 16A (north) and 16B (south)
1573:Signed as exits 15A (north) and 15B (south)
520:. The left lane on each side is used as an
3711:
3697:
3594:
3592:
3590:
3588:
3209:
3207:
3055:
3053:
2655:
2653:
2201:
1965:by the MDSHA) is a 2.1-mile (3.4 km)
3653:
3235:
3045:
2926:
2616:"New Section of Pike Opens Today in Md."
2505:"West Route Selected for New 'Freeway'".
2496:
2456:
2454:
2452:
2399:
2397:
2395:
2393:
2391:
2389:
2387:
2385:
2383:
2381:
1332:Shady Grove Road / Redland Boulevard
973:voting against it. On June 12, 2019, the
3412:. Washington, DC: WTOP-FM. April 1, 2009
2988:
2913:Maryland State Roads Commission (1960).
2873:Maryland State Roads Commission (1959).
2853:Maryland State Roads Commission (1958).
2813:Maryland State Roads Commission (1956).
2788:
2786:
2760:
2717:
2704:Maryland State Roads Commission (1955).
2684:Maryland State Roads Commission (1954).
2661:Rodgers Consulting â 50 years of success
2379:
2377:
2375:
2373:
2371:
2369:
2367:
2365:
2363:
2361:
1447:(Clopper Road / West Diamond Avenue) to
947:
837:
786:
672:
664:
567:
491:
3585:
3367:. Maryland State Highway Administration
3334:
3241:
3213:
3204:
3179:
3061:"Why Does I-70 End in Cove Fort, Utah?"
3050:
2975:"1963-1964 North Central Freeway Study"
2946:
2650:
2596:"5-Mile Link Of Rt. 240 Is Completed".
2485:
2483:
2437:. Maryland State Highway Administration
2255:. Maryland State Highway Administration
1975:called I-270, without the word "Spur".
1454:Northbound exit and southbound entrance
1318:Signed as exits 6A (east) and 6B (west)
1212:Southbound exit and northbound entrance
677:Northern terminus of I-270 in Frederick
3957:
3557:
3538:
3523:
3497:
3303:
3185:
3078:
2512:
2467:
2449:
1900:
856:United States Atomic Energy Commission
669:I-270 northbound approaching Frederick
80:32.90 mi (52.95 km) mainline
3692:
3572:
3452:
3424:
3385:
3242:Lenhart, Jennifer (August 28, 2006).
2783:
2429:
2427:
2358:
2099:
2090:
2073:
2066:
2057:
2026:
2017:
1826:
1787:
1760:
1751:
1724:
1715:
1700:
1696:
1663:
1654:
1627:
1618:
1586:
1577:
1541:
1532:
1515:
1505:
1499:
1492:
1483:
1458:
1410:
1363:
1354:
1349:
1343:
1331:
1322:
1295:
1286:
1268:
1259:
1239:
1230:
1222:
1216:
1143:
1123:
1110:
1053:
1044:
897:Maryland State Highway Administration
3980:Roads in Montgomery County, Maryland
3528:. Takoma Park, MD: Maryland Matters.
3402:
3304:Pollak, Suzanne (February 8, 2019).
3039:
3009:
2967:
2480:
584:. This highway provides access to a
487:
3985:Roads in Frederick County, Maryland
3573:Sears, Bryan P. (August 21, 2023).
3539:Shaver, Katherine (July 12, 2022).
3498:Shaver, Katherine (June 16, 2021).
2175:
1101:Southern terminus; exit 35 on I-495
658:, where it has an interchange with
654:on both sides. The highway reaches
641:. The road has an interchange with
13:
3410:"WTOP answer desk: Widening I-270"
2769:"Montgomery Faces Road Showdown".
2424:
2123:Northern terminus; exit 2 on I-270
2002:
1019:
969:voting for it and State Treasurer
78:34.70 mi (55.84 km)
14:
4001:
3622:
3600:"overview of Interstate 270 Spur"
3335:Metcalf, Andrew (July 11, 2017).
3214:Sipress, Alan (January 4, 1999).
2083:Westlake Terrace to Fernwood Road
986:U.S. Department of Transportation
3990:Limited-access roads in Maryland
3929:
3558:DePuyt, Bruce (August 5, 2022).
3134:"Photos9 â Gaithersburg History"
2636:"McKeldin Opens New Pike Link".
2157:
2107:
2101:
2034:
2028:
1948:2.10 mi (3.38 km)
1917:
1910:
1840:
1834:
1828:
1797:
1761:
1725:
1664:
1628:
1594:
1588:
1554:
1548:
1542:
1468:
1438:
1432:
1426:
1420:
1390:
1384:
1378:
1371:
1365:
1304:(West Montgomery Avenue) â
1296:
1269:
1189:
1183:
1177:
1170:
1164:
1158:
1124:
1074:
1068:
1061:
1055:
746:
391:(Capital Beltway) just north of
375:) is a 34.7-mile (55.8 km)
350:
335:
186:
181:
160:
146:
119:
114:
82:2.10 mi (3.38 km) spur
26:
3975:Interstate Highways in Maryland
3566:
3551:
3532:
3524:DePuyt, Bruce (July 25, 2022).
3517:
3491:
3469:
3446:
3379:
3328:
3297:
3263:
3151:
3126:
3101:
3017:"Takoma Park Historic District"
2954:"1959 Mass Transportation Plan"
2886:
2826:
2740:
2630:
2610:
2590:
2570:
2557:
2544:
2349:Gross Domestic Product deflator
1399:east / Sam Eig Highway to
832:Maryland State Roads Commission
3310:The Montgomery County Sentinel
3065:Federal Highway Administration
2916:Maryland: Official Highway Map
2876:Maryland: Official Highway Map
2856:Maryland: Official Highway Map
2832:"Rt. 240 Bypass To Open Dec."
2816:Maryland: Official Highway Map
2707:Maryland: Official Highway Map
2687:Maryland: Official Highway Map
2303:"Dwight D. Eisenhower Highway"
2295:
2187:Federal Highway Administration
1978:
963:Maryland Board of Public Works
901:Federal Highway Administration
555:single-point urban interchange
1:
3970:Auxiliary Interstate Highways
3386:Vitka, Will (June 11, 2020).
2330:"What Was the U.S. GDP Then?"
2169:
1997:
1013:
699:Monocacy National Battlefield
525:comes to an interchange with
508:(Rockville Pike) in suburban
3453:Kurtz, Josh (June 5, 2019).
2937:1971 map of Washington, D.C.
2836:. November 15, 1957. p. B2.
2640:. September 16, 1954. p. 3.
2620:. September 15, 1954. p 18.
2405:"overview of Interstate 270"
1701:Weigh and inspection station
999:
860:National Bureau of Standards
713:(Buckeystown Pike) near the
701:, which was the site of the
437:high-occupancy vehicle lanes
417:Dwight D. Eisenhower Highway
377:auxiliary Interstate Highway
40:Dwight D. Eisenhower Highway
7:
2580:. January 23, 1953. p. 13.
2567:. November 22, 1950. p. B1.
2477:. December 20, 1944. p. 14.
2150:
1451:south (Quince Orchard Road)
880:Baltimore and Ohio Railroad
629:area and interchanges with
168: / Sam Eig Highway in
10:
4006:
2554:. December 8, 1949. p. B1.
2464:. November 21, 1944. p. 1.
2252:Highway Location Reference
1034:
959:publicâprivate partnership
929:Metropolitan Grove station
799:On November 20, 1944, the
736:
3938:
3927:
3734:
3457:. Washington, DC: WTOP-FM
3390:. Washington, DC: WTOP-FM
2943:. Retrieved May 13, 2009.
2164:Maryland Roads portal
2127:
2122:
2096:
2093:
2076:
2069:
2063:
2060:
2052:
2023:
2020:
2012:
2009:
2006:
2001:
1996:
1944:
1934:
1930:
1907:
1868:
1859:
1823:
1790:
1782:
1757:
1754:
1746:
1742:
1721:
1718:
1710:
1705:
1698:
1693:
1689:
1660:
1657:
1649:
1645:
1624:
1621:
1613:
1608:
1583:
1580:
1572:
1538:
1535:
1518:
1510:
1502:
1495:
1489:
1486:
1461:
1413:
1405:
1360:
1357:
1346:
1338:
1334:
1328:
1325:
1317:
1292:
1289:
1279:
1265:
1262:
1254:
1249:
1236:
1233:
1219:
1148:
1138:
1120:
1115:
1105:
1100:
1050:
1047:
1039:
1029:
1026:
1023:
1018:
1012:
1009:
1006:
943:
777:
763:
759:
743:
482:high-occupancy toll lanes
461:Interstate Highway System
435:configuration as well as
328:
262:Interstate Highway System
257:
252:
248:
234:
224:
214:
209:
205:
177:
138:
110:
105:
95:
87:
74:
66:
58:
53:
46:
39:
23:
3664:Interstate Guide â I-270
2773:. June 13, 1956. p. 18.
2674:. Retrieved May 6, 2009.
2600:. June 10, 1953. p. 13.
2509:. August 27, 1946. p. 4.
2134:
1955:Interstate 270 Spur
1886:
1875:
827:opened on May 18, 1956.
413:Washington National Pike
42:Washington National Pike
3138:GaithersburgHistory.com
3097:– via Wikisource.
2750:. May 13, 1956. p. A1.
2730:. May 19, 1956. p. 17.
1983:The entire route is in
869:to connect directly to
298:Maryland highway system
3679:Maryland Roads - I-270
2666:July 15, 2011, at the
993:American Legion Bridge
953:
843:
796:
715:Francis Scott Key Mall
678:
670:
580:, where it intersects
573:
535:cloverleaf interchange
504:(Capital Beltway) and
497:
427:that are home to many
3027:on September 29, 2007
2493:. May 17, 1946. p. 4.
1563:(Germantown Road) to
1223:Southern terminus of
951:
936:and County Executive
867:North Central Freeway
841:
790:
676:
668:
645:(Clarksburg Road) in
571:
495:
477:North Central Freeway
3674:I-270 at AARoads.com
3669:I-270 at MDRoads.com
3654:KML is from Wikidata
2532:on December 27, 2010
1972:Westfield Montgomery
809:District of Columbia
662:(Old Hundred Road).
545:), I-270 takes on a
3659:I-270 on Kurumi.com
3562:. Maryland Matters.
3545:The Washington Post
3504:The Washington Post
3285:on February 1, 2017
3249:The Washington Post
3221:The Washington Post
3189:The Washington Post
2894:The Washington Post
2834:The Washington Post
2794:The Washington Post
2771:The Washington Post
2748:The Washington Post
2728:The Washington Post
2638:The Washington Post
2618:The Washington Post
2598:The Washington Post
2565:The Washington Post
2552:The Washington Post
2507:The Washington Post
2491:The Washington Post
2475:The Washington Post
2462:The Washington Post
2351:figures follow the
2113:I-270 north â
2067:Democracy Boulevard
1924:Interstate 270 Spur
1901:Interstate 270 Spur
1225:local-express lanes
622:diamond interchange
590:Shady Grove station
369:Interstate 270
140:Major intersections
59:Auxiliary route of
16:Highway in Maryland
2672:Rodgers Consulting
2189:. October 31, 2002
1939:Bethesda, Maryland
1769:to Market Street (
954:
844:
797:
703:Battle of Monocacy
679:
671:
574:
547:localâexpress lane
498:
457:Maryland Route 355
433:localâexpress lane
387:that travels from
3952:
3951:
3341:Bethesda Magazine
2578:The Baltimore Sun
2270:Montgomery County
2148:
2147:
2049:Northern Virginia
1989:Montgomery County
1961:; referred to as
1952:
1951:
1898:
1897:
1880:Incomplete access
1493:Watkins Mill Road
1208:Northern Virginia
785:
784:
514:Montgomery County
488:Route description
397:Montgomery County
366:
365:
362:
361:
54:Route information
3997:
3933:
3932:
3728:
3722:
3721:Auxiliary routes
3713:
3706:
3699:
3690:
3689:
3644:
3617:
3616:
3614:
3612:
3596:
3583:
3582:
3579:Maryland Matters
3570:
3564:
3563:
3555:
3549:
3548:
3536:
3530:
3529:
3521:
3515:
3514:
3512:
3510:
3495:
3489:
3488:
3486:
3484:
3473:
3467:
3466:
3464:
3462:
3450:
3444:
3443:
3441:
3439:
3428:
3422:
3421:
3419:
3417:
3406:
3400:
3399:
3397:
3395:
3383:
3377:
3376:
3374:
3372:
3366:
3358:
3352:
3351:
3349:
3347:
3332:
3326:
3325:
3323:
3321:
3316:on April 4, 2020
3312:. Archived from
3301:
3295:
3294:
3292:
3290:
3284:
3277:
3267:
3261:
3260:
3258:
3256:
3239:
3233:
3232:
3230:
3228:
3211:
3202:
3201:
3183:
3177:
3176:
3174:
3172:
3167:. April 19, 2020
3155:
3149:
3148:
3146:
3144:
3130:
3124:
3123:
3121:
3119:
3105:
3099:
3098:
3096:
3094:
3082:
3076:
3075:
3073:
3071:
3057:
3048:
3047:
3043:
3037:
3036:
3034:
3032:
3023:. Archived from
3013:
3007:
3006:
3004:
3002:
2992:
2986:
2985:
2983:
2981:
2971:
2965:
2964:
2962:
2960:
2950:
2944:
2933:
2924:
2923:
2921:
2910:
2904:
2890:
2884:
2883:
2881:
2870:
2864:
2863:
2861:
2850:
2844:
2830:
2824:
2823:
2821:
2810:
2804:
2790:
2781:
2767:
2758:
2744:
2738:
2724:
2715:
2714:
2712:
2701:
2695:
2694:
2692:
2681:
2675:
2657:
2648:
2634:
2628:
2614:
2608:
2594:
2588:
2574:
2568:
2561:
2555:
2548:
2542:
2541:
2539:
2537:
2531:
2524:
2516:
2510:
2503:
2494:
2487:
2478:
2471:
2465:
2458:
2447:
2446:
2444:
2442:
2431:
2422:
2421:
2419:
2417:
2401:
2356:
2346:
2344:
2342:
2325:
2314:
2313:
2311:
2309:
2299:
2293:
2290:
2288:
2283:Frederick County
2277:
2275:
2264:
2262:
2260:
2246:
2199:
2198:
2196:
2194:
2179:
2162:
2161:
2160:
2141:
2135:
2112:
2111:
2110:
2105:
2104:
2039:
2038:
2037:
2032:
2031:
2004:
1999:
1994:
1993:
1921:
1914:
1905:
1904:
1891:
1887:
1882:
1876:
1845:
1844:
1843:
1838:
1837:
1832:
1831:
1801:
1800:
1765:
1764:
1729:
1728:
1668:
1667:
1632:
1631:
1599:
1598:
1597:
1592:
1591:
1559:
1558:
1557:
1552:
1551:
1546:
1545:
1525:Middlebrook Road
1472:
1471:
1443:
1442:
1441:
1436:
1435:
1430:
1429:
1424:
1423:
1395:
1394:
1393:
1388:
1387:
1382:
1381:
1376:
1375:
1374:
1369:
1368:
1300:
1299:
1273:
1272:
1194:
1193:
1192:
1187:
1186:
1181:
1180:
1175:
1174:
1173:
1168:
1167:
1162:
1161:
1128:
1127:
1079:
1078:
1077:
1072:
1071:
1066:
1065:
1064:
1059:
1058:
1021:
1015:
1004:
1003:
852:Washington, D.C.
750:
741:
740:
683:Frederick County
594:Washington Metro
516:, as a six-lane
473:Washington, D.C.
409:Frederick County
358:
354:
353:
343:
339:
338:
330:
329:
190:
189:
185:
184:
164:
163:
150:
149:
141:
123:
122:
118:
117:
98:
30:
21:
20:
4005:
4004:
4000:
3999:
3998:
3996:
3995:
3994:
3955:
3954:
3953:
3948:
3934:
3930:
3925:
3730:
3726:
3720:
3717:
3655:
3652:
3647:
3646:
3645:
3629:
3625:
3620:
3610:
3608:
3598:
3597:
3586:
3571:
3567:
3556:
3552:
3537:
3533:
3522:
3518:
3508:
3506:
3496:
3492:
3482:
3480:
3475:
3474:
3470:
3460:
3458:
3451:
3447:
3437:
3435:
3430:
3429:
3425:
3415:
3413:
3408:
3407:
3403:
3393:
3391:
3384:
3380:
3370:
3368:
3364:
3360:
3359:
3355:
3345:
3343:
3333:
3329:
3319:
3317:
3302:
3298:
3288:
3286:
3282:
3275:
3269:
3268:
3264:
3254:
3252:
3240:
3236:
3226:
3224:
3212:
3205:
3184:
3180:
3170:
3168:
3157:
3156:
3152:
3142:
3140:
3132:
3131:
3127:
3117:
3115:
3107:
3106:
3102:
3092:
3090:
3083:
3079:
3069:
3067:
3059:
3058:
3051:
3044:
3040:
3030:
3028:
3015:
3014:
3010:
3000:
2998:
2994:
2993:
2989:
2979:
2977:
2973:
2972:
2968:
2958:
2956:
2952:
2951:
2947:
2934:
2927:
2919:
2911:
2907:
2891:
2887:
2879:
2871:
2867:
2859:
2851:
2847:
2831:
2827:
2819:
2811:
2807:
2791:
2784:
2768:
2761:
2745:
2741:
2725:
2718:
2710:
2702:
2698:
2690:
2682:
2678:
2668:Wayback Machine
2658:
2651:
2635:
2631:
2615:
2611:
2595:
2591:
2575:
2571:
2562:
2558:
2549:
2545:
2535:
2533:
2529:
2522:
2518:
2517:
2513:
2504:
2497:
2488:
2481:
2472:
2468:
2459:
2450:
2440:
2438:
2433:
2432:
2425:
2415:
2413:
2403:
2402:
2359:
2340:
2338:
2326:
2317:
2307:
2305:
2301:
2300:
2296:
2286:
2280:
2273:
2267:
2258:
2256:
2247:
2202:
2192:
2190:
2181:
2180:
2176:
2172:
2158:
2156:
2153:
2144:
2137:
2133:
2129:
2108:
2106:
2102:
2100:
2035:
2033:
2029:
2027:
1981:
1926:
1925:
1922:
1915:
1903:
1894:
1889:
1885:
1878:
1874:
1870:
1841:
1839:
1835:
1833:
1829:
1827:
1798:
1762:
1726:
1665:
1629:
1595:
1593:
1589:
1587:
1555:
1553:
1549:
1547:
1543:
1469:
1439:
1437:
1433:
1431:
1427:
1425:
1421:
1391:
1389:
1385:
1383:
1379:
1377:
1372:
1370:
1366:
1364:
1297:
1270:
1190:
1188:
1184:
1182:
1178:
1176:
1171:
1169:
1165:
1163:
1159:
1157:
1150:
1145:
1125:
1117:
1112:
1075:
1073:
1069:
1067:
1062:
1060:
1056:
1054:
1016:
1002:
946:
755:
754:
751:
739:
695:scenic overlook
592:, which serves
490:
403:in the city of
351:
349:
336:
334:
187:
182:
161:
147:
139:
120:
115:
106:Major junctions
83:
81:
49:
41:
35:
34:
31:
17:
12:
11:
5:
4003:
3993:
3992:
3987:
3982:
3977:
3972:
3967:
3950:
3949:
3947:
3946:
3943:
3939:
3936:
3935:
3928:
3926:
3924:
3923:
3922:
3921:
3916:
3911:
3906:
3894:
3893:
3892:
3880:
3879:
3878:
3873:
3868:
3863:
3851:
3850:
3849:
3837:
3836:
3835:
3830:
3825:
3820:
3815:
3810:
3798:
3797:
3796:
3791:
3786:
3774:
3773:
3772:
3767:
3762:
3750:
3749:
3748:
3735:
3732:
3731:
3716:
3715:
3708:
3701:
3693:
3687:
3686:
3681:
3676:
3671:
3666:
3661:
3628:
3627:
3626:
3624:
3623:External links
3621:
3619:
3618:
3584:
3565:
3550:
3531:
3516:
3490:
3468:
3445:
3423:
3401:
3378:
3353:
3327:
3296:
3262:
3234:
3203:
3178:
3150:
3125:
3100:
3077:
3049:
3038:
3008:
2987:
2966:
2945:
2925:
2905:
2885:
2865:
2845:
2825:
2805:
2782:
2759:
2739:
2716:
2696:
2676:
2649:
2629:
2609:
2589:
2569:
2556:
2543:
2511:
2495:
2479:
2466:
2448:
2423:
2357:
2353:MeasuringWorth
2347:United States
2335:MeasuringWorth
2315:
2294:
2292:
2291:
2278:
2200:
2173:
2171:
2168:
2167:
2166:
2152:
2149:
2146:
2145:
2143:
2142:
2130:
2125:
2124:
2121:
2098:
2095:
2092:
2088:
2087:
2084:
2081:
2078:
2075:
2071:
2070:
2068:
2065:
2062:
2059:
2055:
2054:
2051:
2025:
2022:
2019:
2015:
2014:
2011:
2008:
2005:
2000:
1980:
1977:
1950:
1949:
1946:
1942:
1941:
1936:
1932:
1931:
1928:
1927:
1923:
1916:
1909:
1908:
1902:
1899:
1896:
1895:
1893:
1892:
1883:
1871:
1866:
1865:
1858:
1825:
1821:
1820:
1817:
1795:
1792:
1789:
1785:
1784:
1781:
1759:
1756:
1753:
1750:
1744:
1743:
1741:
1723:
1720:
1717:
1714:
1709:
1703:
1702:
1699:
1697:
1695:
1691:
1690:
1688:
1662:
1659:
1656:
1653:
1647:
1646:
1644:
1626:
1623:
1620:
1617:
1611:
1610:
1607:
1585:
1582:
1579:
1575:
1574:
1571:
1540:
1537:
1534:
1530:
1529:
1526:
1523:
1520:
1517:
1514:
1508:
1507:
1504:
1501:
1497:
1496:
1494:
1491:
1488:
1485:
1481:
1480:
1477:
1466:
1463:
1460:
1456:
1455:
1452:
1418:
1415:
1412:
1408:
1407:
1404:
1362:
1359:
1356:
1352:
1351:
1348:
1345:
1342:
1336:
1335:
1333:
1330:
1327:
1324:
1320:
1319:
1316:
1294:
1291:
1288:
1284:
1283:
1278:
1267:
1264:
1261:
1258:
1252:
1251:
1248:
1238:
1235:
1232:
1228:
1227:
1221:
1218:
1214:
1213:
1210:
1155:
1152:
1147:
1141:
1140:
1137:
1122:
1119:
1114:
1109:
1107:North Bethesda
1103:
1102:
1099:
1052:
1049:
1046:
1043:
1038:
1032:
1031:
1028:
1025:
1022:
1017:
1011:
1008:
1001:
998:
967:Peter Franchot
945:
942:
875:Georgia Avenue
783:
782:
779:
775:
774:
765:
761:
760:
757:
756:
753:Interstate 70S
752:
745:
744:
738:
735:
652:weigh stations
489:
486:
453:U.S. Route 240
364:
363:
360:
359:
346:
344:
326:
325:
324:
323:
318:
313:
308:
302:
301:
293:
292:
287:
282:
277:
272:
266:
265:
255:
254:
253:Highway system
250:
249:
246:
245:
236:
232:
231:
226:
222:
221:
216:
212:
211:
207:
206:
203:
202:
179:
178:North end
175:
174:
173:
172:
158:
142:
136:
135:
112:
111:South end
108:
107:
103:
102:
99:
93:
92:
89:
85:
84:
79:
76:
72:
71:
67:Maintained by
64:
63:
56:
55:
51:
50:
47:
44:
43:
37:
36:
33:Interstate 270
32:
25:
24:
15:
9:
6:
4:
3:
2:
4002:
3991:
3988:
3986:
3983:
3981:
3978:
3976:
3973:
3971:
3968:
3966:
3965:Interstate 70
3963:
3962:
3960:
3944:
3941:
3940:
3937:
3920:
3917:
3915:
3912:
3910:
3907:
3905:
3902:
3901:
3900:
3899:
3895:
3891:
3888:
3887:
3886:
3885:
3884:West Virginia
3881:
3877:
3874:
3872:
3869:
3867:
3864:
3862:
3859:
3858:
3857:
3856:
3852:
3848:
3845:
3844:
3843:
3842:
3838:
3834:
3831:
3829:
3826:
3824:
3821:
3819:
3816:
3814:
3811:
3809:
3806:
3805:
3804:
3803:
3799:
3795:
3792:
3790:
3787:
3785:
3782:
3781:
3780:
3779:
3775:
3771:
3768:
3766:
3763:
3761:
3758:
3757:
3756:
3755:
3751:
3747:
3744:
3743:
3742:
3741:
3737:
3736:
3733:
3729:
3727:Interstate 70
3723:
3714:
3709:
3707:
3702:
3700:
3695:
3694:
3691:
3685:
3682:
3680:
3677:
3675:
3672:
3670:
3667:
3665:
3662:
3660:
3657:
3656:
3651:
3642:
3638:
3634:
3633:
3607:
3606:
3601:
3595:
3593:
3591:
3589:
3580:
3576:
3569:
3561:
3554:
3546:
3542:
3535:
3527:
3520:
3505:
3501:
3494:
3478:
3472:
3456:
3449:
3438:September 21,
3433:
3427:
3411:
3405:
3389:
3382:
3363:
3357:
3342:
3338:
3331:
3320:September 15,
3315:
3311:
3307:
3300:
3281:
3274:
3273:
3266:
3251:
3250:
3245:
3238:
3223:
3222:
3217:
3210:
3208:
3199:
3195:
3191:
3190:
3182:
3171:September 18,
3166:
3165:
3160:
3154:
3143:September 18,
3139:
3135:
3129:
3118:September 18,
3114:
3110:
3104:
3088:
3081:
3066:
3062:
3056:
3054:
3042:
3026:
3022:
3018:
3012:
2997:
2991:
2976:
2970:
2955:
2949:
2942:
2938:
2932:
2930:
2918:
2917:
2909:
2903:
2899:
2895:
2889:
2878:
2877:
2869:
2858:
2857:
2849:
2843:
2839:
2835:
2829:
2818:
2817:
2809:
2803:
2799:
2795:
2789:
2787:
2780:
2776:
2772:
2766:
2764:
2757:
2753:
2749:
2743:
2737:
2733:
2729:
2723:
2721:
2709:
2708:
2700:
2689:
2688:
2680:
2673:
2669:
2665:
2662:
2656:
2654:
2647:
2643:
2639:
2633:
2627:
2623:
2619:
2613:
2607:
2603:
2599:
2593:
2587:
2583:
2579:
2573:
2566:
2560:
2553:
2547:
2528:
2521:
2515:
2508:
2502:
2500:
2492:
2486:
2484:
2476:
2470:
2463:
2457:
2455:
2453:
2436:
2430:
2428:
2412:
2411:
2406:
2400:
2398:
2396:
2394:
2392:
2390:
2388:
2386:
2384:
2382:
2380:
2378:
2376:
2374:
2372:
2370:
2368:
2366:
2364:
2362:
2354:
2350:
2337:
2336:
2331:
2324:
2322:
2320:
2304:
2298:
2285:
2284:
2279:
2272:
2271:
2266:
2265:
2254:
2253:
2245:
2243:
2241:
2239:
2237:
2235:
2233:
2231:
2229:
2227:
2225:
2223:
2221:
2219:
2217:
2215:
2213:
2211:
2209:
2207:
2205:
2188:
2184:
2178:
2174:
2165:
2155:
2154:
2140:
2132:
2131:
2126:
2120:
2116:
2089:
2072:
2056:
2050:
2046:
2043:south â
2042:
2016:
1995:
1992:
1990:
1986:
1976:
1973:
1968:
1964:
1960:
1956:
1947:
1943:
1940:
1937:
1933:
1929:
1920:
1913:
1906:
1884:
1881:
1873:
1872:
1867:
1863:
1857:
1853:
1850:north â
1849:
1822:
1816:
1812:
1809:east) â
1808:
1804:
1786:
1780:
1776:
1772:
1768:
1749:
1745:
1740:
1736:
1732:
1713:
1708:
1704:
1692:
1687:
1683:
1679:
1675:
1671:
1652:
1648:
1643:
1639:
1635:
1616:
1612:
1606:
1602:
1576:
1570:
1566:
1562:
1531:
1513:
1509:
1498:
1482:
1475:
1457:
1450:
1446:
1409:
1402:
1398:
1353:
1341:
1337:
1321:
1315:
1311:
1307:
1303:
1285:
1282:
1276:
1257:
1253:
1246:
1242:
1241:Montrose Road
1229:
1226:
1215:
1209:
1205:
1202:south â
1201:
1197:
1142:
1135:
1131:
1108:
1104:
1098:
1094:
1090:
1089:Silver Spring
1087:south â
1086:
1082:
1042:
1037:
1033:
1005:
997:
994:
989:
987:
983:
978:
976:
972:
968:
964:
960:
950:
941:
939:
935:
930:
924:
922:
916:
914:
910:
906:
902:
898:
894:
893:Michigan Park
890:
885:
881:
876:
872:
868:
863:
861:
857:
853:
848:
840:
836:
833:
828:
826:
822:
816:
812:
810:
806:
802:
794:
789:
780:
776:
773:
769:
766:
762:
758:
749:
742:
734:
732:
728:
724:
720:
716:
712:
708:
704:
700:
696:
692:
688:
684:
675:
667:
663:
661:
657:
653:
648:
644:
640:
636:
632:
628:
623:
619:
615:
611:
607:
603:
599:
595:
591:
587:
586:park and ride
583:
579:
570:
566:
564:
560:
556:
552:
548:
544:
540:
539:Montrose Road
536:
532:
528:
523:
519:
515:
511:
507:
503:
494:
485:
484:(HOT lanes).
483:
478:
474:
470:
466:
462:
458:
454:
449:
446:
442:
438:
434:
430:
426:
422:
418:
414:
410:
406:
402:
398:
394:
390:
386:
382:
378:
374:
370:
357:
347:
345:
342:
332:
331:
327:
322:
321:Scenic Byways
319:
317:
314:
312:
309:
307:
304:
303:
300:
299:
295:
294:
291:
288:
286:
283:
281:
278:
276:
273:
271:
268:
267:
264:
263:
259:
258:
256:
251:
247:
244:
240:
237:
233:
230:
227:
223:
220:
219:United States
217:
213:
208:
204:
201:
197:
193:
180:
176:
171:
167:
159:
157:
153:
145:
144:
143:
137:
134:
130:
126:
113:
109:
104:
100:
94:
90:
86:
77:
73:
70:
65:
62:
57:
52:
45:
38:
29:
22:
19:
3913:
3908:
3896:
3882:
3853:
3839:
3800:
3776:
3752:
3738:
3630:
3609:. Retrieved
3603:
3578:
3568:
3553:
3544:
3534:
3519:
3507:. Retrieved
3503:
3493:
3481:. Retrieved
3471:
3459:. Retrieved
3448:
3436:. Retrieved
3426:
3414:. Retrieved
3404:
3392:. Retrieved
3381:
3371:February 17,
3369:. Retrieved
3356:
3346:February 17,
3344:. Retrieved
3340:
3330:
3318:. Retrieved
3314:the original
3309:
3299:
3287:. Retrieved
3280:the original
3271:
3265:
3253:. Retrieved
3247:
3237:
3225:. Retrieved
3219:
3187:
3181:
3169:. Retrieved
3162:
3153:
3141:. Retrieved
3137:
3128:
3116:. Retrieved
3112:
3103:
3091:. Retrieved
3080:
3068:. Retrieved
3041:
3029:. Retrieved
3025:the original
3011:
2999:. Retrieved
2990:
2978:. Retrieved
2969:
2957:. Retrieved
2948:
2940:
2915:
2908:
2893:
2888:
2875:
2868:
2855:
2848:
2833:
2828:
2815:
2808:
2793:
2770:
2747:
2742:
2727:
2706:
2699:
2686:
2679:
2671:
2637:
2632:
2617:
2612:
2597:
2592:
2577:
2572:
2564:
2559:
2551:
2546:
2534:. Retrieved
2527:the original
2514:
2506:
2490:
2474:
2469:
2461:
2439:. Retrieved
2414:. Retrieved
2408:
2352:
2341:November 30,
2339:. Retrieved
2333:
2306:. Retrieved
2297:
2282:
2269:
2257:. Retrieved
2251:
2191:. Retrieved
2177:
2136:
2010:Destinations
1982:
1962:
1958:
1954:
1953:
1888:
1877:
1860:Access via
1340:Gaithersburg
1277:(Falls Road)
1134:MD 187B
1093:College Park
1083:east /
1027:Destinations
990:
979:
955:
925:
917:
864:
849:
845:
829:
817:
813:
798:
680:
578:Gaithersburg
575:
531:MD 187B
499:
464:
450:
425:Gaithersburg
416:
412:
372:
368:
367:
296:
260:
170:Gaithersburg
101:Entire route
91:1975âpresent
18:
3605:Google Maps
3113:DCRoads.net
3093:January 14,
2410:Google Maps
1779:Buckeystown
1739:Buckeystown
1682:Poolesville
1678:Barnesville
1314:Poolesville
982:Marc Elrich
938:Ike Leggett
934:Larry Hogan
884:Takoma Park
805:US 240
793:Yellow Book
731:US 340
660:MD 109
643:MD 121
639:power lines
631:MD 118
618:MD 124
614:MD 117
602:MD 200
588:lot at the
559:MD 189
543:MD 927
527:MD 187
506:MD 355
3959:Categories
3159:"Facebook"
3021:Takoma, DC
2896:. p. D15.
2796:. p. A16.
2170:References
2045:Washington
1959:I-270 Spur
1862:US 40
1856:Gettysburg
1848:US 15
1811:Hagerstown
1807:US 40
1686:Ijamsville
1674:Hyattstown
1651:Hyattstown
1642:Clarksburg
1615:Clarksburg
1569:Germantown
1512:Germantown
1310:Darnestown
1204:Washington
1196:I-270 Spur
1036:Montgomery
984:asked the
971:Nancy Kopp
821:MD 28
727:US 15
723:US 40
711:MD 85
691:MD 80
656:Hyattstown
647:Clarksburg
635:MD 27
627:Germantown
563:MD 28
541:(unsigned
445:Clarksburg
441:Germantown
381:U.S. state
306:Interstate
239:Montgomery
196:US 40
3289:March 12,
3198:138467272
2902:149056490
2842:148964630
2802:148774187
2779:148774187
2756:148821987
2736:148869923
2646:148472694
2626:148562568
2606:152577075
2586:541649930
2536:April 21,
2441:April 27,
2119:Frederick
2115:Rockville
1979:Exit list
1852:Frederick
1815:Baltimore
1775:Frederick
1773:) â
1748:Frederick
1707:Frederick
1306:Rockville
1256:Rockville
1198:south to
1000:Exit list
889:Brookland
825:Rockville
781:1959â1975
768:Frederick
707:Frederick
551:Rockville
475:, on the
421:Rockville
405:Frederick
399:north to
275:Auxiliary
243:Frederick
200:Frederick
156:Rockville
3945:Proposed
3914:270 Spur
3898:Maryland
3876:Business
3841:Illinois
3833:Business
3802:Missouri
3794:Business
3770:Business
3754:Colorado
3746:Business
3632:KML file
3509:June 23,
3483:June 12,
3394:June 11,
3194:ProQuest
3164:Facebook
3109:"VDX.tv"
2898:ProQuest
2838:ProQuest
2798:ProQuest
2775:ProQuest
2752:ProQuest
2732:ProQuest
2664:Archived
2642:ProQuest
2622:ProQuest
2602:ProQuest
2582:ProQuest
2355:series.
2308:April 5,
2259:March 2,
2151:See also
2139:HOV only
1985:Bethesda
1935:Location
1890:Unopened
1733: â
1672: â
1636: â
1605:Damascus
1567: â
1097:Bethesda
1041:Bethesda
1010:Location
858:and the
772:Bethesda
764:Location
598:Red Line
522:HOV lane
510:Bethesda
393:Bethesda
385:Maryland
285:Business
280:Suffixed
235:Counties
229:Maryland
210:Location
194: /
133:Bethesda
127: /
3611:May 11,
3602:(Map).
3461:June 6,
3416:May 13,
3255:May 13,
3227:May 13,
3070:May 13,
3031:May 13,
3001:May 13,
2980:May 13,
2959:May 12,
2416:May 11,
2407:(Map).
2193:May 13,
1694:
921:biotech
778:Existed
737:History
518:freeway
429:biotech
379:in the
215:Country
88:Existed
3942:Former
3778:Kansas
3196:
2900:
2840:
2800:
2777:
2754:
2734:
2644:
2624:
2604:
2584:
1963:I-270Y
1945:Length
1771:MD 355
1735:Urbana
1712:Urbana
1670:MD 109
1634:MD 121
1565:MD 355
1561:MD 118
1474:MD 124
1449:MD 124
1445:MD 117
1401:MD 200
1275:MD 189
1245:MD 927
1130:MD 187
1085:MD 355
1007:County
944:Future
913:MD 570
891:, and
687:Urbana
610:Laurel
600:, and
356:MD 270
341:MD 268
290:Future
129:MD 355
75:Length
3365:(PDF)
3283:(PDF)
3276:(PDF)
2920:(PDF)
2880:(PDF)
2860:(PDF)
2820:(PDF)
2711:(PDF)
2691:(PDF)
2530:(PDF)
2523:(PDF)
2287:(PDF)
2274:(PDF)
2041:I-495
2013:Notes
1791:52.46
1788:32.60
1767:MD 85
1755:50.15
1752:31.16
1731:MD 80
1719:41.89
1716:26.03
1658:35.87
1655:22.29
1638:Boyds
1622:29.66
1619:18.43
1601:MD 27
1581:25.40
1578:15.78
1536:23.72
1533:14.74
1519:22.48
1516:13.97
1503:19.73
1500:12.26
1487:19.59
1484:12.17
1462:18.46
1459:11.47
1414:17.46
1411:10.85
1397:I-370
1358:15.00
1347:14.93
1326:13.50
1302:MD 28
1290:10.40
1200:I-495
1149:3.85â
1144:2.39â
1116:2.48â
1111:1.54â
1081:I-495
1030:Notes
909:I-695
905:I-170
791:1955
582:I-370
557:with
537:with
502:I-495
465:I-70S
389:I-495
373:I-270
316:State
225:State
166:I-370
152:MD 28
125:I-495
69:MDSHA
3855:Ohio
3740:Utah
3641:help
3637:edit
3613:2009
3511:2021
3485:2019
3463:2019
3440:2017
3418:2009
3396:2020
3373:2018
3348:2018
3322:2019
3291:2022
3257:2009
3229:2009
3173:2022
3145:2022
3120:2022
3095:2015
3072:2009
3033:2009
3003:2009
2982:2009
2961:2009
2538:2009
2443:2020
2418:2009
2343:2023
2310:2015
2261:2012
2195:2009
2094:3.38
2091:2.10
2077:2.17
2074:1.35
2061:1.61
2058:1.00
2021:0.00
2018:0.00
2007:Exit
1967:spur
1864:west
1803:I-70
1403:east
1355:9.32
1344:9.28
1323:8.39
1287:6.46
1281:SPUI
1263:8.85
1260:5.50
1234:6.66
1231:4.14
1220:5.89
1217:3.66
1151:4.31
1146:2.68
1118:2.95
1113:1.83
1048:0.00
1045:0.00
1024:Exit
871:I-95
830:The
729:and
721:and
719:I-70
606:I-95
469:I-95
443:and
423:and
401:I-70
270:Main
192:I-70
61:I-70
3919:370
3909:270
3904:170
3890:470
3871:670
3866:470
3861:270
3847:270
3828:670
3823:470
3818:370
3813:270
3808:170
3789:670
3784:470
3765:470
3760:270
3724:of
2670:".
1846:To
823:in
608:in
596:'s
471:in
407:in
395:in
383:of
198:in
154:in
131:in
97:NHS
3961::
3639:â˘
3587:^
3577:.
3543:.
3502:.
3339:.
3308:.
3246:.
3218:.
3206:^
3192:.
3161:.
3136:.
3111:.
3063:.
3052:^
3019:.
2939:"
2928:^
2785:^
2762:^
2719:^
2652:^
2498:^
2482:^
2451:^
2426:^
2360:^
2332:.
2318:^
2203:^
2185:.
2117:,
2047:,
2003:km
1998:mi
1991:.
1987:,
1854:,
1813:,
1794:32
1777:,
1758:31
1737:,
1722:26
1684:,
1680:,
1676:,
1661:22
1640:,
1625:18
1584:16
1539:15
1522:13
1490:12
1465:11
1417:10
1312:,
1308:,
1206:,
1095:,
1091:,
1020:km
1014:mi
915:.
512:,
348:â
333:â
311:US
241:,
3712:e
3705:t
3698:v
3643:)
3635:(
3615:.
3581:.
3547:.
3513:.
3487:.
3465:.
3442:.
3420:.
3398:.
3375:.
3350:.
3324:.
3293:.
3259:.
3231:.
3200:.
3175:.
3147:.
3122:.
3074:.
3035:.
3005:.
2984:.
2963:.
2935:"
2659:"
2540:.
2445:.
2420:.
2345:.
2312:.
2289:.
2276:.
2263:.
2197:.
2097:â
2080:â
2064:1
2024:â
1957:(
1824:â
1805:(
1361:9
1329:8
1293:6
1266:5
1247:)
1243:(
1237:4
1154:2
1136:)
1121:1
1051:â
770:â
371:(
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
