Alaska bridges
Alaska reports 1,660 bridges and culverts across 31 counties. 124 (7.5%) are rated in poor condition, and 137 are posted with load limits or closed. The oldest structure still in the inventory dates from 1910.
Find a bridge in Alaska
Type at least two characters, or pick a condition or type, to search every bridge in the state.
Counties
Circle size reflects the number of bridges- Aleutians East Borough 16
- Aleutians West Census Area 8
- Anchorage Municipality 134
- Bethel Census Area 13
- Bristol Bay Borough 2
- County 000 1
- County 063 65
- County 066 53
- County 158 1
- Denali Borough 27
- Dillingham Census Area 3
- Fairbanks North Star Borough 112
- Haines Borough 20
- Hoonah-Angoon Census Area 103
- Juneau City and Borough 47
- Kenai Peninsula Borough 102
- Ketchikan Gateway Borough 107
- Kodiak Island Borough 25
- Lake and Peninsula Borough 10
- Matanuska-Susitna Borough 121
- Nome Census Area 30
- North Slope Borough 16
- Northwest Arctic Borough 7
- Petersburg Census Area 137
- Prince of Wales-Hyder Census Area 226
- Sitka City and Borough 36
- Skagway Municipality 6
- Southeast Fairbanks Census Area 64
- Wrangell City and Borough 58
- Yakutat City and Borough 16
- Yukon-Koyukuk Census Area 94
Condition
Good46%(766)
Fair46%(770)
Poor7%(124)
Counties with the highest share of poor bridges
- Nome Census Area13.3% of 30
- Kenai Peninsula Borough12.7% of 102
- County 06312.3% of 65
- Kodiak Island Borough12.0% of 25
- Ketchikan Gateway Borough11.2% of 107
Structure types
| Structure type | Bridges | Share |
|---|---|---|
| Stringer/Multi-beam or Girder | 857 | 51.6% |
| Tee Beam | 425 | 25.6% |
| Culvert | 119 | 7.2% |
| Slab | 80 | 4.8% |
| Box Beam or Girders - Multiple | 64 | 3.9% |
| Truss - Thru | 55 | 3.3% |
| Girder and Floorbeam System | 31 | 1.9% |
| Other | 8 | 0.5% |
| Orthotropic | 5 | 0.3% |
| Arch - Deck | 4 | 0.2% |
| Truss - Deck | 4 | 0.2% |
| Box Beam or Girders - Single or Spread | 4 | 0.2% |
| Stayed Girder | 1 | 0.1% |
| Segmental Box Girder | 1 | 0.1% |
| Channel Beam | 1 | 0.1% |
| Frame | 1 | 0.1% |
When Alaska's bridges were built
Busiest
- Glenn Highway over Ship CreekFairAnchorage Municipality · 60,000 vehicles/day
- Seward Highway over Dowling RD UnderxingGoodAnchorage Municipality · 47,700 vehicles/day
- Seward Highway over Dimond Blvd UnderxingFairAnchorage Municipality · 41,300 vehicles/day
- Seward Highway over 76th Ave UndercrossingGoodAnchorage Municipality · 41,300 vehicles/day
- Parks Highway over Seward Meridian U.C.GoodMatanuska-Susitna Borough · 32,100 vehicles/day
Longest
- Main Street over Main Street PelicanPoorHoonah-Angoon Census Area · 2,830 ft
- Loop Rd/C Street over Anchorage Port AccessFairAnchorage Municipality · 2,655 ft
- Dalton Highway over Yukon RiverFairYukon-Koyukuk Census Area · 2,295 ft
- Alaska Highway over Robertson RiverFairSoutheast Fairbanks Census Area · 1,979 ft
- Marine HWY Route over Cold Bay DockPoorAleutians East Borough · 1,824 ft
Oldest
- Copper River HWY over Million Dollar BridgePoorCounty 063 · Built 1910
- Edgerton/Mccarthy over Kuskulana RiverFairCounty 066 · Built 1910
- Willoughby Ave over Gold CreekFairJuneau City and Borough · Built 1934
- Calhoun Avenue over Calhoun ViaductFairJuneau City and Borough · Built 1934
- 9th Street over Gold Creek Ninth STFairJuneau City and Borough · Built 1934
Newest
- Richardson Highway over Rich HWY Oh MP 359 SBGoodFairbanks North Star Borough · Built 2024
- Aurora Drive over Noyes Slough (aurora)GoodFairbanks North Star Borough · Built 2024
- Glenn Highway over Kings RiverGoodMatanuska-Susitna Borough · Built 2024
- Ferry Shuttle RTE over Revilla Airport F.T. IIGoodKetchikan Gateway Borough · Built 2024
- Ferry Shuttle RTE over Gravina Airport F.T. IIGoodKetchikan Gateway Borough · Built 2024
Who owns Alaska's bridges
| State | 904 | 54.5% |
| Federal | 505 | 30.4% |
| City | 114 | 6.9% |
| Tribal | 69 | 4.2% |
| County | 64 | 3.9% |
| Local | 3 | 0.2% |
| Railroad | 1 | 0.1% |
More Alaska facts
Total bridge length46 miles
Total deck area8,479,359 sq ft
Culverts counted as bridges119 (7%)
On the National Highway System435
Posted with load limits106
Closed to traffic31
Listed or eligible for the National Register4
Average daily traffic per bridge1,914 vehicles
Newest structure2024