State Spotlight

Alaska Bridge Infrastructure: A Complete Analysis

A comprehensive look at Alaska's bridge inventory, including condition grades, highest-traffic crossings, worst-rated structures, and oldest bridges.

By BridgeStats Data TeamPublished June 15, 2025Updated June 15, 2025

Alaska is home to 1,660 bridges spanning 30 counties, making it one of the most significant bridge inventories in the country. These bridges carry a combined 2,838,140 vehicle crossings every day. Here is a comprehensive look at the state of Alaska's bridge infrastructure based on the latest National Bridge Inventory data.

1,660

Total Bridges

Infrastructure Grade

7.5%

Poor Condition

37 years

Average Age

Alaska at a Glance

Alaska earns an overall infrastructure grade of C based on the percentage of its bridges in poor condition. Currently, 124 bridges (7.5%) are rated poor, compared to the national average of 6.7%. The average bridge in Alaska is 37 years old, younger than the national average of 48 years.

Of the state's 1,660 bridges, 766 are in good condition, 770 are fair, and 124 are poor. View the full breakdown on the [Alaska report card](/reports/alaska).

Most-Traveled Bridges in Alaska

These are the bridges carrying the highest daily traffic volumes across Alaska. High-traffic bridges are critical infrastructure -- their condition directly affects the commutes of tens of thousands of drivers.

#	Bridge	Location	Condition	Rating	Built	Daily Traffic
1	GLENN HIGHWAY over SHIP CREEK	Anchorage Municipality, Alaska	Fair	77.9	1988	60,000
2	SEWARD HIGHWAY over DOWLING RD UNDERXING	Anchorage Municipality, Alaska	Good	87.8	2022	47,700
3	SEWARD HIGHWAY over DIMOND BLVD UNDERXING	Anchorage Municipality, Alaska	Fair	62.4	1976	41,300
4	SEWARD HIGHWAY over 76TH AVE UNDERCROSSING	Anchorage Municipality, Alaska	Good	84.9	2017	41,300
5	PARKS HIGHWAY over SEWARD MERIDIAN U.C.	Matanuska-Susitna Borough, Alaska	Good	76.9	2005	32,100
6	AIRPORT/MINNESOTA over MINNESOTA DR OVERHEAD	Anchorage Municipality, Alaska	Good	69.1	1993	31,600
7	MINNESOTA DRIVE over AIRPORT SPUR OVERHEAD	Anchorage Municipality, Alaska	Fair	66.9	1999	31,600
8	MINNESOTA DRIVE over MINN. DR./RASP. RD. I.C.	Anchorage Municipality, Alaska	Good	75.2	1991	31,500
9	SEWARD HIGHWAY over OMALLEY UNDERCROSSING	Anchorage Municipality, Alaska	Fair	61.3	1978	31,400
10	TUDOR ROAD over TUDOR ROAD OVERCROSSING	Anchorage Municipality, Alaska	Fair	64.9	1974	29,400

Worst-Condition Bridges in Alaska

The following bridges have the lowest sufficiency ratings in Alaska. These structures are the most likely candidates for federal repair or replacement funding under the Bipartisan Infrastructure Law.

#	Bridge	Location	Condition	Rating	Built	Daily Traffic
1	IRR BIA RTE 1045 over UNNAMED STREAM	Bethel Census Area, Alaska	Poor	11.7	1980	0
2	IRR BIA RTE 002 over UNNAMED STREAM	North Slope Borough, Alaska	Poor	11.7	1980	0
3	IRR BIA RTE 8PGH over UNNAMED CREEK	Kenai Peninsula Borough, Alaska	Poor	16.4	1997	5
4	IRR BIA RTE 8PGH over UNNAMED CREEK	Kenai Peninsula Borough, Alaska	Poor	18.1	1997	5
5	SECTION LINE RD over LITTLE CHENA RIVER	Fairbanks North Star Borough, Alaska	Poor	18.4	1980	20
6	IRR BIA RTE 1048 over WINDY CREEK RIGHT	Kenai Peninsula Borough, Alaska	Poor	18.9	1997	2
7	GRUBSTAKE-HATCHERS over WILLOW CREEK	Matanuska-Susitna Borough, Alaska	Poor	20.3	1945	10
8	IRR BIA RTE 8PGH over UNNAMED CREEK	Kenai Peninsula Borough, Alaska	Poor	21.4	1997	5
9	IRR BIA RTE 1026 over UNNAMED CREED	Kenai Peninsula Borough, Alaska	Poor	22.8	1997	10
10	IRR BIA RTE 1026 over UNNAMED CREEK	Kenai Peninsula Borough, Alaska	Poor	22.8	1997	10

Oldest Bridges in Alaska

Alaska's oldest bridges tell the story of the state's transportation history. Some of these structures have been in continuous service for over a century.

#	Bridge	Location	Condition	Rating	Built	Daily Traffic
1	COPPER RIVER HWY over MILLION DOLLAR BRIDGE	Chugach Census Area, Alaska	Poor	54.7	1910	65
2	EDGERTON/MCCARTHY over KUSKULANA RIVER	Copper River Census Area, Alaska	Fair	65.4	1910	70
3	CALHOUN AVENUE over CALHOUN VIADUCT	Juneau City and Borough, Alaska	Fair	50.9	1934	2,816
4	9TH STREET over GOLD CREEK NINTH ST	Juneau City and Borough, Alaska	Fair	49.7	1934	953
5	WILLOUGHBY AVE over GOLD CREEK	Juneau City and Borough, Alaska	Fair	50.5	1934	6,139
6	DOUGLAS HIGHWAY over LAWSON CREEK	Juneau City and Borough, Alaska	Fair	65.6	1935	6,160
7	POINT WHITSHED RD over HENEY CREEK	Chugach Census Area, Alaska	Poor	51.4	1936	440
8	BASIN ROAD over BASIN ROAD TRESTLE	Juneau City and Borough, Alaska	Good	64.9	1936	280
9	SEWARD HIGHWAY over GROUSE CREEK NO. 2	Kenai Peninsula Borough, Alaska	Fair	71.7	1937	2,180
10	STERLING L/OPHIR over YANKEE CREEK	Yukon-Koyukuk Census Area, Alaska	Fair	42.5	1937	45

What These Numbers Mean for Alaska

Alaska's bridge infrastructure grade of C reflects both the current condition of the state's bridges and the scale of the challenge ahead. With an average bridge age of 37 years, many of these structures are approaching or past the 50-75 year design life typical of most bridges. The state's ability to maintain and replace aging bridges will determine whether conditions improve or deteriorate in the coming decade.

For county-by-county breakdowns, historical trends, and individual bridge profiles, visit the [Alaska state page](/bridges/alaska) or the [Alaska report card](/reports/alaska). You can also explore how Alaska compares to other states in our [state rankings](/blog/best-bridge-infrastructure-by-state-2025).

Data source: All data comes from the National Bridge Inventory maintained by the Federal Highway Administration (FHWA). BridgeStats is not affiliated with the U.S. government. Data is provided for informational purposes only.

Rankings

Alaska Bridge Infrastructure: A Complete Analysis

Alaska at a Glance

Most-Traveled Bridges in Alaska

Worst-Condition Bridges in Alaska

Oldest Bridges in Alaska

What These Numbers Mean for Alaska

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