304:
594:
in each direction along with interchanges at Yuma Road and Elwood Street. There will be frontage roads along this entire segment to provide access to local communities. Bridges will be built over Lilac Street/Canyon Trails
Boulevard and Lower Buckeye Road, and access will be via the frontage roads. Following Elwood Street, Loop 303 will head southwest for the one-mile stretch of this segment between Elwood Street and MC-85. It will consist of building two lanes in each direction as well as an at-grade intersection with MC-85.
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the US 60. This part began in
December 2014 and was complete in spring 2016. The final part was to construct the El Mirage Road interchange. This began in February 2015 and was complete in summer 2016. This marked the first time the entire Loop 303 between I-10 and I-17 was fully upgraded to freeway standards.
561:
In August 2014, construction began on the seven-mile segment between US 60 and Happy Valley
Parkway to upgrade it to freeway standards. The first part was to upgrade the roadway to three lanes in each direction; it was complete in summer 2015. The second part was to construct a parclo interchange at
593:
A new segment of Loop 303 is planned to begin construction in 2025. It is the three-mile segment south of Van Buren Street to MC-85. The two-mile stretch of this segment between Van Buren Street and Elwood Street will be built along the Cotton Lane alignment. It will consist of building three lanes
536:
In 2009, construction began on the 14-mile segment between Happy Valley
Parkway and I-17. In May 2011, this segment opened as a four-lane freeway with interchanges at Happy Valley Parkway, Lone Mountain Parkway (not opened until 2012), and Lake Pleasant Parkway. Motorists still have to pass through
532:
and added back to the regional transportation plan. As
Maricopa County had completed much of the required study and preparation work, construction on the freeway proceeded with a planned completion date of the I-10 to I-17 segment by 2015. According to an agreement between the state legislature and
470:
was completed between US 60 and I-10 in 1991, marking the first road along the Loop 303 corridor. The freeway was scheduled to be completed sometime by 2005. However, funding shortfalls and increasing construction costs forced cutbacks in the plan, and in 1995 the freeway was dropped from the
533:
ADOT, Statewide
Transportation Acceleration Needs (STAN) funds were used to build a partial interchange at Bell Road in summer 2010, several years before previously intended. Funds from this were also used to upgrade the crossings at Waddell and Cactus Roads to make way for the new freeway.
557:
In May 2012, construction began on the seven-mile segment between Peoria Avenue and Thomas Road. This segment was fully completed in August 2014 with a trumpet interchange at
Northern Parkway (opened in late 2013) along with other interchanges at every arterial road except Olive Avenue.
549:
and interchanges. In August 2011, construction began on the six-mile segment between
Mountain View Boulevard and Peoria Avenue. This segment was completed in fall 2013 with interchanges at Bell, Greenway, Waddell, and Cactus Roads as well as Peoria Avenue.
553:
In
November 2011, construction began on the north half of the I-10 and Loop 303 stack interchange. Construction was completed in August 2014 with the opening of all of the north half ramps. The McDowell Road bridge was also completed during this time.
565:
In
February 2016, construction began on the south half of the I-10 and Loop 303 stack interchange. Construction was complete in October 2017 with the opening of all of the south half ramps along with the Van Buran Street interchange.
569:
In December 2020, construction began to widen the six-mile segment between Happy Valley Parkway and Lake Pleasant Parkway from two to three lanes in each direction. It was completed with the opening of the Jomax Parkway exit in
508:
at Clearview Boulevard and Mountain View Boulevard. An interim interchange and bridge above US 60 were also built at the same time. In May 2004, SR 303 was renamed the "Bob Stump Memorial Parkway" in honor of former Arizona
1556:
491:
road and the only sections as a four-lane divided parkway was the extension north of US 60, and the southern terminus just north of I-10 between Indian School and McDowell Roads. The segment between US 60 and
597:
A full freeway-to-freeway interchange will be built at the Loop 303 and I-17. The goal is for construction to begin sometime in 2028. Loop 303 has been built to accommodate four-general purpose lanes, one
433:
near Skunk Creek. East of this interchange, Loop 303 becomes Sonoran Desert Drive. The southern portion between US 60 to I-10 is used to bypass Grand Avenue, and the whole route is used to bypass the
479:
Maricopa County took charge of SR 303 when it was dropped from the regional freeway plans in 1995, maintaining the interim two-lane highway along the original corridor while keeping the
585:
In October 2022, construction began to build the interchanges at 51st Avenue and 43rd Avenue. Construction was completed with the opening of these interchanges in August 2023.
466:, designed to serve the Northwest Valley, was originally designated SR 517 in 1985; the Loop 303 designation was first assigned on December 18, 1987. The interim two-lane
393:. After passing Northern Parkway, the freeway continues for a few miles before entering a residential community at Greenway Road and turning northeast. It passes above
678:
110:
374:
at I-10. South of Van Buren Street it continues as Cotton Lane but without a route number. The freeway heads north under McDowell and Thomas Roads, then over an
483:
designation. The county then made significant improvements to the highway, extending it from US 60 to Happy Valley Parkway in 2004 as a four-lane divided
2118:
2108:
2024:
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1634:
1528:
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in Goodyear. Construction of that segment will be around the same time as that portion of SR 30, and the timeline is currently unknown.
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interchanges. The freeway comes to an end at a temporary at-grade interchange (eventually to be a freeway-to-freeway interchange) with
17:
1968:
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1943:
1914:
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Hassayampa Freeway. Most of this extension would be in Goodyear and would be built around the same time as that portion of I-11.
545:
Beginning in mid-2011, ADOT began upgrading Loop 303 between US 60 and I-10 from a two-lane highway to a six-lane freeway with
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2001:
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Happy Valley Parkway was routing of Temporary Loop 303 before parkway's maintenance was turned over to Maricopa County
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Planned at-grade intersection; construction planned to begin in 2025; Loop 303 may go south of MC-85 in the future
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Planned interchange; to be southbound exit and northbound entrance; construction planned to begin in 2025
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Planned interchange; no northbound signage for Lower Buckeye Road; construction planned to begin in 2025
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Regional Transportation Plan that was funded by a sales tax approved by Maricopa County voters. The
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Roadway Inventory Management Section, Multimodal Planning Division (December 31, 2013).
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signaled ramp junctions at I-17 until a full freeway-to-freeway interchange is built.
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interchange, the freeway condenses down to four lanes and passes through planned
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1443:"ADOT opens all new ramp connections at I-10/Loop 303 interchange in Goodyear"
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Long-term plans include the Loop 303 to continue south of SR 30 to the future
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Northbound exit and southbound entrance; temporary counterclockwise terminus
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Loop 303 is planned to continue south of MC-85 and connect to the future
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2025:"SR 303L, LITCHFIELD ROAD TRAFFIC INTERCHANGE FINAL PROJECT ASSESSMENT"
450:
1805:"Two new Loop 303 expansion projects to start soon in the West Valley"
342:. The freeway, originally a two-lane rural highway, was maintained by
1915:"Initial Design Concept Report SR 303L Lake Pleasant Parkway to I-17"
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30:"Loop 303" and "Arizona Loop 303" redirect here. For other uses, see
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Planned interchange; to be southbound exit and northbound entrance
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382:. It then proceeds through a farmland terrain and passes by the
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781:; signed as exits 104A (east) and 104B (west); exit 124 on I-10
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again took control of upgrading the interim road to a freeway.
1804:
43:
1779:"All ramps are open at the Loop 303/I-10 traffic interchange"
1609:"West Valley's explosive growth spawns Loop 303 construction"
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Old colored Arizona Loop 303 shield that has been phased out.
1696:"FY 2009 and FY 2010 Appropriations Chairmen Budget Options"
1283:
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
602:, and one auxiliary lane in order to expand in the future.
1857:"Loop 303 widening project completed in northwest Valley"
1831:"ADOT opens two ramps connecting Loop 303, Interstate 10"
1944:"Loop 303 from Interstate 10 to Proposed State Route 30"
1969:"Loop 303: State Route 30 to Hassayampa Freeway Study"
1529:"Loop 303: Lake Pleasant Parkway to I-17 Improvements"
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Exit numbering is arbitrary. The entire route is in
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approved in 2004, SR 303 was taken back over by the
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1890:"Loop 303: MC 85 to Van Buren Street Improvements"
1635:"Maricopa County Board of Supervisors minute book"
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1278:exit 221; continues east as Sonoran Desert Drive
1583:"Right-of-Way Resolutions - Route Number: 517"
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2092:Template:Attached KML/Arizona State Route 303
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1498:"New Loop 303 lanes open in northwest Valley"
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1727:"'Turnin' dirt' on the Loop 303 in Surprise"
1994:"FY 2022 FREEWAY LIFE CYCLE PROGRAM (FLCP)"
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530:Arizona Department of Transportation (ADOT)
458:Loop 303 was originally a part of the 1985
2119:Transportation in Maricopa County, Arizona
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1345:Roads and freeways in metropolitan Phoenix
413:interchange. It turns east again south of
2109:Freeways in the Phoenix metropolitan area
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302:
900:Northbound exit and southbound entrance
798:Southbound exit and northbound entrance
370:. It becomes a six-lane freeway with a
27:State highway in Arizona, United States
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487:. SR 303 was still largely a two-lane
405:. The freeway turns eastward north of
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1973:Arizona Department of Transportation
1948:Arizona Department of Transportation
1922:Arizona Department of Transportation
1894:Arizona Department of Transportation
1861:Arizona Department of Transportation
1835:Arizona Department of Transportation
1809:Arizona Department of Transportation
1783:Arizona Department of Transportation
1757:Arizona Department of Transportation
1731:Arizona Department of Transportation
1674:Arizona Department of Transportation
1557:"About MAG: Proposition 300 and 400"
1533:Arizona Department of Transportation
1502:Arizona Department of Transportation
1447:Arizona Department of Transportation
1386:Arizona Department of Transportation
1260: / Sonoran Desert Drive –
353:
348:Arizona Department of Transportation
2032:Maricopa Association of Governments
2002:Maricopa Association of Governments
1561:Maricopa Association of Governments
24:
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643:
409:before turning north again at the
84:35.25 mi (56.73 km)
25:
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338:that serves the west part of the
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795:Thomas Road / McDowell Road
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1379:"2013 State Highway System Log"
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2005:. December 1, 2021. p. 39
1924:. October 2021. pp. 77–78
1640:. May 13, 2004. Archived from
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1461:
923:; west end of Northern Parkway
719:Yuma Road / Lower Buckeye Road
13:
1:
1360:
637:
358:Loop 303 currently begins at
32:List of highways numbered 303
1753:"Work continues on Loop 303"
619:
519:
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316:Arizona State Route 303
229:Arizona State Highway System
7:
1314:
702:Elwood Street / Cotton Lane
62:Loop 303 highlighted in red
10:
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581:Interchange at 43rd Avenue
524:With the extension of the
500:was partially upgraded to
440:
328:Bob Stump Memorial Parkway
56:Bob Stump Memorial Parkway
29:
18:Bob Stump Memorial Parkway
2114:State highways in Arizona
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1670:"The future of Loop 303"
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1589:. Works Consulting LLC
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1328:U.S. roads portal
1274:with frontage roads;
1272:at-grade intersection
1181:Lake Pleasant Parkway
1164:Lone Mountain Parkway
1126:/ Vistancia Boulevard
580:
453:
423:Lake Pleasant Parkway
306:
2096:KML is from Wikidata
1647:on 30 September 2007
1587:Arizona Highway Data
1270:Clockwise terminus;
1124:Happy Valley Parkway
1090:Proposed interchange
411:Happy Valley Parkway
395:Grand Avenue (US 60)
362:, one mile south of
346:until 2004 when the
326:, also known as the
1785:. September 4, 2014
1759:. December 16, 2013
1704:Arizona Legislature
1206:Planned interchange
921:Trumpet interchange
401:railroad line at a
391:trumpet interchange
123:Major intersections
1863:. January 20, 2021
1469:"Northern Parkway"
1449:. October 10, 2017
1340:Arizona portal
1067:Parclo interchange
813:Indian School Road
583:
456:
403:parclo interchange
384:Wildlife World Zoo
380:Indian School Road
313:
1837:. August 17, 2014
1733:. August 11, 2011
1615:. October 5, 2003
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1294:Incomplete access
863:Bethany Home Road
779:Stack interchange
574:in January 2022.
502:freeway standards
372:stack interchange
354:Route description
301:
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68:Route information
16:(Redirected from
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2062:arizonaroads.com
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421:. Following the
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332:Estrella Freeway
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1504:. June 24, 2016
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1087:Litchfield Road
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896:Northern Avenue
879:Glendale Avenue
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739:/ McDowell Road
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626:Maricopa County
622:
591:
547:auxiliary lanes
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460:Maricopa County
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419:Agua Fria River
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344:Maricopa County
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49:State Route 303
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1475:. June 6, 2020
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1420:. June 6, 2020
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935:
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924:
918:
912:
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901:
898:
893:
890:
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883:
882:
880:
877:
874:
871:
867:
866:
864:
861:
858:
855:
852:
846:
845:
843:
841:Camelback Road
838:
835:
832:
829:
818:
817:
815:
810:
807:
804:
800:
799:
796:
793:
790:
787:
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776:
758:
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743:
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734:
731:
728:
724:
723:
720:
717:
714:
711:
707:
706:
703:
700:
697:
694:
690:
689:
686:
683:Historic US 80
671:
668:
665:
662:
656:
655:
652:
649:
646:
641:
635:
621:
618:
590:
587:
542:
539:
521:
518:
476:
473:
447:
444:
442:
439:
355:
352:
330:(formerly the
299:
298:
295:
294:
281:
279:
261:
260:
259:
258:
253:
248:
243:
238:
232:
231:
223:
222:
221:Highway system
218:
217:
214:
213:
208:
204:
203:
198:
194:
193:
189:
188:
185:
184:
170:
166:
165:
163:
162:
148:
139:
127:
125:
119:
118:
103:
99:
98:
94:
93:
90:
86:
85:
82:
78:
77:
73:Maintained by
70:
69:
65:
64:
61:
58:
57:
53:
52:
48:
41:
40:
26:
9:
6:
4:
3:
2:
2131:
2120:
2117:
2115:
2112:
2110:
2107:
2106:
2104:
2093:
2084:
2080:
2076:
2075:
2063:
2059:
2055:
2054:
2033:
2026:
2020:
2004:
2003:
1995:
1989:
1974:
1970:
1964:
1949:
1945:
1939:
1923:
1916:
1910:
1895:
1891:
1885:
1883:
1881:
1879:
1862:
1858:
1852:
1836:
1832:
1826:
1811:. May 3, 2012
1810:
1806:
1800:
1784:
1780:
1774:
1758:
1754:
1748:
1732:
1728:
1722:
1706:
1705:
1697:
1691:
1676:. May 5, 2011
1675:
1671:
1665:
1663:
1651:September 30,
1643:
1636:
1630:
1614:
1610:
1604:
1588:
1584:
1581:Breyer, Joe.
1577:
1562:
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1534:
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1273:
1267:
1263:
1259:
1241:
1225:
1209:
1191:
1187:
1182:
1169:
1153:
1148:Jomax Parkway
1136:
1132:
1125:
1109:
1093:
1075:
1074:Sun City West
1071:
1068:
1062:
1058:
1040:
1035:
1022:
1017:Greenway Road
1006:
990:
973:
969:
964:Peoria Avenue
951:
947:
943:
926:
922:
916:
903:
897:
884:
868:
851:
847:
842:
827:
823:
819:
814:
801:
784:
780:
775:
771:
767:
745:
738:
725:
708:
691:
684:
680:
661:
657:
632:
629:
627:
617:
615:
610:
608:
603:
601:
595:
586:
579:
575:
573:
567:
563:
559:
555:
551:
548:
538:
534:
531:
527:
517:
515:
512:
507:
504:in 2004 with
503:
499:
495:
490:
486:
482:
472:
469:
465:
461:
452:
438:
436:
432:
428:
424:
420:
416:
415:Lake Pleasant
412:
408:
407:Sun City West
404:
400:
396:
392:
389:
385:
381:
377:
373:
369:
365:
361:
351:
349:
345:
341:
337:
333:
329:
325:
324:Loop 303
321:
317:
310:
305:
292:
282:
280:
277:
267:
266:
262:
257:
254:
252:
249:
247:
244:
242:
239:
237:
234:
233:
230:
227:
226:
224:
219:
215:
212:
209:
205:
202:
201:United States
199:
195:
190:
186:
183:
179:
171:
167:
161:
157:
149:
147:
143:
140:
137:
129:
128:
126:
120:
116:
112:
104:
100:
95:
91:
87:
83:
79:
76:
71:
66:
59:
54:
45:
38:
33:
19:
2072:
2061:
2036:. Retrieved
2034:. April 2019
2031:
2019:
2007:. Retrieved
2000:
1988:
1976:. Retrieved
1972:
1963:
1951:. Retrieved
1947:
1938:
1926:. Retrieved
1921:
1909:
1897:. Retrieved
1893:
1865:. Retrieved
1860:
1851:
1839:. Retrieved
1834:
1825:
1813:. Retrieved
1808:
1799:
1787:. Retrieved
1782:
1773:
1761:. Retrieved
1756:
1747:
1735:. Retrieved
1730:
1721:
1709:. Retrieved
1702:
1690:
1678:. Retrieved
1673:
1649:. Retrieved
1642:the original
1629:
1617:. Retrieved
1613:Biz Journals
1612:
1603:
1591:. Retrieved
1586:
1576:
1564:. Retrieved
1560:
1538:November 30,
1536:. Retrieved
1532:
1506:. Retrieved
1501:
1477:. Retrieved
1472:
1463:
1451:. Retrieved
1446:
1422:. Retrieved
1417:
1389:. Retrieved
1302:
1291:
1061:Grand Avenue
1001:Waddell Road
937:Olive Avenue
651:Destinations
623:
611:
604:
596:
592:
584:
568:
564:
560:
556:
552:
544:
541:2011–present
535:
523:
478:
457:
357:
331:
327:
323:
319:
315:
314:
228:
92:1991–present
2038:February 5,
1978:February 5,
1867:January 21,
1841:February 4,
1815:February 4,
1789:February 5,
1763:February 1,
1737:February 1,
1711:February 1,
1707:. p. 6
1680:February 5,
1619:January 30,
1566:January 30,
1508:February 5,
1479:January 23,
1453:February 5,
1424:January 30,
1391:January 16,
1236:43rd Avenue
1220:51st Avenue
1203:67th Avenue
985:Cactus Road
774:Los Angeles
511:congressman
481:state route
376:interchange
311:interchange
291:SR 347
276:SR 289
138:in Goodyear
2103:Categories
1414:"Loop 303"
1361:References
1057:US 60
679:MC 85
506:overpasses
236:Interstate
156:US 60
111:MC 85
1262:Flagstaff
1034:Bell Road
620:Exit list
526:sales tax
520:2004–2011
514:Bob Stump
494:Bell Road
475:1995–2004
446:1985–1995
386:near the
307:Loop 303/
117:(Planned)
2074:KML file
2058:"AZ 303"
2009:July 29,
1953:July 29,
1928:April 1,
1899:July 29,
1593:March 2,
1355:Loop 202
1350:Loop 101
1315:See also
1304:Unopened
972:Surprise
950:Surprise
946:Glendale
850:Glendale
826:Glendale
822:Goodyear
768: –
660:Goodyear
634:Location
600:HOV lane
498:Surprise
427:arterial
368:Goodyear
334:), is a
251:Proposed
192:Location
160:Surprise
146:Glendale
115:Goodyear
1473:AAroads
1418:AAroads
1266:Phoenix
1190:Phoenix
1111:
770:Phoenix
485:parkway
468:highway
464:freeway
441:History
417:at the
336:freeway
211:Arizona
197:Country
182:Phoenix
89:Existed
1135:Peoria
589:Future
572:Peoria
397:and a
320:SR 303
256:Former
81:Length
2028:(PDF)
1997:(PDF)
1918:(PDF)
1699:(PDF)
1645:(PDF)
1638:(PDF)
1382:(PDF)
1246:63.17
1243:39.25
1230:60.64
1227:37.68
1214:59.19
1211:36.78
1197:55.65
1194:34.58
1174:51.14
1171:31.78
1158:45.03
1155:27.98
1142:43.26
1139:26.88
1117:41.33
1114:25.68
1098:38.11
1095:23.68
1081:36.21
1078:22.50
1045:31.04
1042:19.29
1027:26.04
1024:16.18
1011:24.43
1008:15.18
995:22.82
992:14.18
979:21.21
976:13.18
958:19.60
955:12.18
931:17.96
928:11.16
908:17.19
905:10.68
889:16.38
886:10.18
873:14.81
857:13.18
834:11.57
752:6.12–
747:3.80–
654:Notes
607:SR 30
489:rural
378:with
322:) or
246:State
207:State
2083:help
2079:edit
2040:2022
2011:2022
1980:2022
1955:2022
1930:2022
1901:2022
1869:2022
1843:2022
1817:2022
1791:2022
1765:2022
1739:2022
1713:2022
1682:2022
1653:2007
1621:2022
1595:2016
1568:2022
1540:2022
1510:2022
1481:2022
1455:2022
1426:2022
1393:2016
1276:I-17
1258:I-17
952:line
917:east
911:110B
892:110A
870:9.20
854:8.19
831:7.19
828:line
806:9.93
803:6.17
789:8.35
786:5.19
766:I-10
754:6.39
749:3.97
730:5.15
727:3.20
713:3.38
710:2.10
696:1.77
693:1.10
667:0.00
664:0.00
648:Exit
614:I-11
431:I-17
399:BNSF
364:I-10
309:I-10
178:I-17
136:I-10
102:From
75:ADOT
1249:138
1233:137
1217:136
1200:133
1177:131
1161:127
1145:126
1120:125
1101:123
1084:122
1048:119
1030:116
1014:115
998:114
982:113
961:112
934:111
876:109
860:108
837:107
809:106
792:105
757:104
733:103
716:102
699:100
496:in
366:in
180:in
158:in
144:in
113:in
2105::
2081:•
2060:.
2030:.
1999:.
1971:.
1946:.
1920:.
1892:.
1877:^
1859:.
1833:.
1807:.
1781:.
1755:.
1729:.
1701:.
1672:.
1661:^
1611:.
1585:.
1559:.
1548:^
1531:.
1518:^
1500:.
1489:^
1471:.
1445:.
1434:^
1416:.
1401:^
1384:.
1369:^
1264:,
772:,
670:99
644:km
638:mi
628:.
516:.
437:.
283:→
268:←
241:US
169:To
2085:)
2077:(
2064:.
2042:.
2013:.
1982:.
1957:.
1932:.
1903:.
1871:.
1845:.
1819:.
1793:.
1767:.
1741:.
1715:.
1684:.
1655:.
1623:.
1597:.
1570:.
1542:.
1512:.
1483:.
1457:.
1428:.
1395:.
1063:)
1059:(
948:–
824:–
685:)
681:(
318:(
34:.
20:)
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