Interstate Highways in Alaska
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There are four officially designated interstate highways in Alaska, even though Alaska is usually considered to have no interstates, and the routes do not connect directly to any highways in the contiguous United States.
These routes are numbered A-1 through A-4 and receive similar funding to interstates in the Lower 48, but are unsigned (unlike those in Hawaii) and exist only "on paper".
They follow various combinations of Alaska Routes, which generally fail to meet interstate standards, being for the most part two-lane rural highways without controlled access. The federal government established the classification of these roads as interstate highways primarily for funding purposes. There appears to be no indication that upgrades to interstate highway standards will be made, aside from a few heavily traveled urban corridors. Freeways exist only within and near Anchorage and Wasilla.
Interstate A-1 encompasses the Glenn Highway, the Richardson Highway between the Glenn Highway and the Tok Cut-Off, the Tok Cut-Off, and the Alaska Highway between Tok and the Canadian border.
Interstate A-2 encompasses the Alaska Highway between Tok and Delta Junction, and the Richardson Highway between Delta Junction and Fairbanks.
Interstate A-3 encompasses the Seward Highway between Anchorage and Tern Lake, and the Sterling Highway between Tern Lake and Soldotna.
Interstate A-4 encompasses the Parks Highway.
[edit] Length
| Route | Length | Termini | ||
|---|---|---|---|---|
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A-1 | 408.23 mi | 656.98 km | Anchorage, A-3 to Canadian border |
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A-2 | 202.18 mi | 325.38 km | Tok, A-1 to Fairbanks, A-4 |
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A-3 | 148.12 mi | 238.38 km | Anchorage, A-1 to Soldotna |
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A-4 | 323.69 mi | 520.93 km | Palmer, A-1 to Fairbanks, A-2 |
| Main Interstate Highways (multiples of 5 in pink) |  |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 4 | 5 | 8 | 10 | 12 | 15 | 16 | 17 | 19 | 20 | 22 | 24 | 25 | 26 | 27 | 29 | 30 |
| 35 | 37 | 39 | 40 | 43 | 44 | 45 | 49 | 55 | 57 | 59 | 64 | 65 | 66 | 66 (W) | 68 | |
| 69 | 70 | 71 | 72 | 73 | 74 | 75 | 76 (W) | 76 (E) | 77 | 78 | 79 | 80 | 81 | 82 | ||
| 83 | 84 (W) | 84 (E) | 85 | 86 (W) | 86 (E) | 87 | 88 (W) | 88 (E) | 89 | 90 | ||||||
| 91 | 93 | 94 | 95 | 96 | 97 | 99 | (238) | H-1 | H-2 | H-3 | ||||||
| Unsigned | A-1 | A-2 | A-3 | A-4 | PRI-1 | PRI-2 | PRI-3 | |||||||||
| Lists | Main - Auxiliary - Suffixed - Business - Proposed - Unsigned Gaps - Intrastate - Interstate standards - Replaced |
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[edit] External links
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