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169:. The Interstate Highway System in Alaska comprises four highways that cover 1,082.22 miles (1,741.66 km). The longest of these is Interstate A-1 (A-1), at 408.23 miles (656.98 km) long, while the shortest route is A-3, at 148.12 miles (238.38 km) long. All Interstates in Alaska are unsigned and are not generally referred to by their highway numbers.
201:. Title 23 provides that "Highways on the Interstate System in Alaska and Puerto Rico shall be designed in accordance with such geometric and construction standards as are adequate for current and probable future traffic demands and the needs of the locality of the highway." Some portions of these highways are built to Interstate standards, though. The
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180:. The Interstate Highway System was expanded to Alaska in 1976, by the Federal-Aid Highway Act of 1976, which defined the system for Interstates in Alaska and Puerto Rico under
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Interstates in Alaska follow the numbering system
Interstate A-n, where n represents the number of the Interstate. This follows the similar numbering systems for
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961:"Alaska Department of Transportation and Public Facilities Routes by Description: CDS Route Numbers as of 28 October 2008"
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614:"Table 1: Main Routes of the Dwight D. Eisenhower National System of Interstate and Defense Highways"
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Most of the lengths of the
Interstates in Alaska are not constructed to
21:
Dwight D. Eisenhower
National System of Interstate and Defense Highways
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are no longer a part of the system. Major
Interstates are highlighted.
165:(DOT&PF) is responsible for the maintenance and operations of the
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221:, A-4, is constructed to freeway standards in Wasilla. In and around
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1010:
Template:Attached KML/List of
Interstate Highways in Alaska
891:
Alaska
Department of Transportation & Public Facilities
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Alaska
Department of Transportation & Public Facilities
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Alaska
Department of Transportation & Public Facilities
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237:, in Anchorage, are constructed to expressway standards.
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928:"Dwight D. Eisenhower Interstate Routes Statewide"
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1019:Photos of Alaska Interstate Highway ends
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670:"Interstates in Hawaii: Are We Crazy???"
84:1,082.22 mi (1,741.66 km)
70:Interstates of Alaska highlighted in red
688:
668:Weingroff, Richard F. (April 7, 2011).
644:"Interstate Frequently Asked Questions"
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262:Northern or eastern terminus
259:Southern or western terminus
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661:
611:
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557:, which comprises the entirety of A-4
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889:(Report) (2008-2009-2010 ed.).
847:(Report) (2008-2009-2010 ed.).
839:
966:. U.S. Department of Transportation
933:. U.S. Department of Transportation
700:"Title 23, Chapter 1, Section §103"
612:Starks, Edward (January 27, 2022).
13:
518:, part of A-2, and Badger Road in
14:
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982:
702:. U.S. Government Printing Office
641:
63:Shields for Interstates in Alaska
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959:Federal Highway Administration.
926:Federal Highway Administration.
811:"Overview Map of Interstate A-2"
783:"Overview Map of Interstate A-4"
753:"Overview Map of Interstate A-1"
725:"Overview Map of Interstate A-3"
676:. Federal Highway Administration
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197:but are small, rural, two-lane
107:Interstate A-n (A-n) (unsigned)
648:Federal Highway Administration
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622:Federal Highway Administration
618:FHWA Route Log and Finder List
217:. A very small portion of the
1:
1692:Interstate Highways in Alaska
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155:Interstate Highways in Alaska
1026:at AARoads' Interstate Guide
884:Annual Traffic Volume Report
842:Annual Traffic Volume Report
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840:Witt, Jennifer W. (2010).
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1697:Lists of roads in Alaska
1014:KML is not from Wikidata
882:Birkholz, Ethan (2010).
698:United States Congress.
233:, in Fairbanks, and the
187:§ 103(c)(1)(B)(ii)
588:U.S. roads portal
117:Alaska Route n (AK-n)
555:George Parks Highway
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219:George Parks Highway
1068:Interstate Highways
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231:Johansen Expressway
167:Interstate Highways
1024:Alaska Interstates
516:Richardson Highway
374:Richardson Highway
320:Richardson Highway
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227:Richardson Highway
199:undivided highways
76:System information
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900:on April 17, 2014
858:on March 30, 2014
576:Alaska portal
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496:Glenn Highway
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469:Parks Highway
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211:Glenn Highway
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144:Scenic Byways
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132:
131:Alaska Routes
128:
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97:Highway names
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990:
968:. Retrieved
935:. Retrieved
902:. Retrieved
895:the original
860:. Retrieved
853:the original
818:. Retrieved
814:
790:. Retrieved
786:
762:. Retrieved
756:
732:. Retrieved
728:
704:. Retrieved
678:. Retrieved
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663:
651:. Retrieved
637:
625:. Retrieved
617:
302:Alcan Border
256:Length (km)
253:Length (mi)
192:
171:
154:
152:
138:
129:
122:System links
15:
815:Google Maps
787:Google Maps
758:Google Maps
729:Google Maps
627:January 24,
460:01976-01-01
407:01976-01-01
361:01976-01-01
324:Tok Cut-Off
307:01976-01-01
178:Puerto Rico
103:Interstates
1686:Categories
1670:Routes in
594:References
500:Glennallen
139:Interstate
1650:Standards
1619:Auxiliary
862:March 15,
680:March 15,
520:Fairbanks
455:Fairbanks
402:Anchorage
356:Fairbanks
293:Anchorage
223:Fairbanks
207:Anchorage
183:23 U.S.C.
1629:Business
1624:Suffixed
1561:Unsigned
1065:Primary
992:KML file
563:See also
465:current
412:current
397:Soldotna
366:current
312:current
268:Removed
1672:italics
1614:Primary
970:May 31,
937:May 31,
904:May 31,
820:May 31,
813:(Map).
792:May 31,
785:(Map).
764:May 31,
755:(Map).
734:May 31,
727:(Map).
706:May 31,
653:May 31,
642:Staff.
481:Gallery
443:Gateway
439:520.93
393:238.38
347:325.38
289:656.98
265:Formed
250:Number
215:Wasilla
1660:Tolled
1634:Future
1076:Signed
449:Palmer
436:323.69
390:148.12
344:202.18
286:408.23
271:Notes
241:Routes
225:, the
209:. The
185:
174:Hawaii
161:. The
159:Alaska
89:Formed
81:Length
1643:Other
1607:Lists
1598:PRI-3
1593:PRI-2
1588:PRI-1
1455:CT–MA
1449:PA–NY
1427:PA–MA
1422:OR–UT
1406:CT–RI
1399:PA–NY
1393:WA–OR
1356:OH–NJ
1351:CO–NE
1297:VA–DC
1291:KS–KY
964:(PDF)
931:(PDF)
898:(PDF)
887:(PDF)
856:(PDF)
845:(PDF)
539:Homer
447:near
113:State
1655:Gaps
1001:help
997:edit
972:2012
939:2012
906:2012
864:2012
822:2012
794:2012
766:2012
736:2012
708:2012
682:2011
655:2012
629:2023
553:The
533:The
494:The
462:1976
409:1976
363:1976
309:1976
176:and
153:The
92:1976
1583:A-4
1578:A-3
1573:A-2
1568:A-1
1552:H-3
1547:H-2
1542:H-1
1477:88
1462:87
1440:86
1418:84
1389:82
1347:76
1286:66
432:A-4
386:A-3
351:Tok
340:A-2
300:in
282:A-1
1688::
1537:99
1532:97
1527:96
1521:95
1515:94
1510:93
1505:91
1499:90
1493:89
1486:NY
1481:IL
1471:NY
1466:NC
1444:ID
1435:85
1414:83
1385:81
1379:80
1373:79
1368:78
1363:77
1342:75
1336:74
1331:73
1326:72
1321:71
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1304:68
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1275:64
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1196:31
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1178:27
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1128:15
1122:14
1117:12
1112:11
1106:10
999:•
947:^
914:^
872:^
830:^
802:^
774:^
744:^
716:^
690:^
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602:^
445:,
418:,
372:,
326:,
322:,
318:,
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