State profile · Above national median SD

Alaska bridge safety

Condition ratings, load ratings, and structural-deficiency data for every public highway bridge in Alaska — drawn straight from the FHWA National Bridge Inventory.

909
Public bridges
42.0%
Good condition
10.1%
Poor condition
10.1%
Structurally deficient

Total Bridges

909

Public highway bridges in Alaska

Good Condition

42.0%

382 bridges rated 7-9

-8.0pp vs 50% benchmark

Poor Condition

10.1%

92 bridges rated 0-4

Structurally Deficient

10.1%

92 bridges flagged for repair priority

3.1pp vs national avg 7.0%

Alaska vs national bridge condition

Alaska — Good condition share 42.0%
National avg

Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).

Alaska — Structurally deficient share 33.7%
National avg

Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.

Condition Distribution

Bridge inventory deck-condition mix — Alaska (FHWA NBI)

Alaska42.02420242024203%46.864686468646866%10.121012101210122%10.121012101210122%GoodFairPoorStructurally Deficient
Bridge inventory deck-condition mix — Alaska (FHWA NBI)

Counties (30)

Aleutians East 3 Aleutians West 1 Anchorage 35 Bethel 9 Bristol Bay 1 Chugach 18 Copper River 23 Denali 11 Dillingham 0 Fairbanks North Star 42 Haines 13 Hoonah-Angoon 115 Juneau City and 17 Kenai Peninsula 45 Ketchikan Gateway 56 Kodiak Island 8 Kusilvak 0 Lake and Peninsula 1 Matanuska-Susitna 26 Nome 18 North Slope 2 Northwest Arctic 3 Petersburg 115 Prince of Wales-Hyder 185 Sitka City and 32 Skagway 3 Southeast Fairbanks 32 Wrangell City and 55 Yakutat City and 6 Yukon-Koyukuk 34

Alaska vs nearby ranks

Adjacent states on the structurally deficient leaderboard (lower share = better)

States are ranked by share of bridges flagged structurally deficient — the FHWA classification for any span where deck, superstructure, or substructure carries a condition rating of 4 or below. Lower percentages indicate stronger maintenance funding and inspection follow-through. States here sit immediately above and below Alaska on the same metric.

29

Missouri

8.53% top marginal rate
Structure
Progressive
Burden @ $100K
$24,654

26

Michigan

8.92% top marginal rate
Structure
Progressive
Burden @ $100K
$1,188
Selected

02

Alaska

10.12% top marginal rate
Structure
Progressive
Burden @ $100K
$909

42

Pennsylvania

10.50% top marginal rate
Structure
Progressive
Burden @ $100K
$14,867

38

North Dakota

10.84% top marginal rate
Structure
Progressive
Burden @ $100K
$4,242

Bridges Needing Most Attention in Alaska

Six lowest-condition bridges in Alaska, ranked by composite NBI rating. Each is inspected at least every 24 months.

SECTION LINE RD

Poor

Over: LITTLE CHENA RIVER

MILE POINT 10.2, Fairbanks North Star, AK

Built 1980 Load: 1.6 t ADT: 20

NO DATA ENTERED

Structurally Deficient

Over: PALMER CREEK

PALMER CREEK ROAD, Kenai Peninsula, AK

Built 1957 Load: 2.7 t ADT: 10

IRR BIA RTE 26

Structurally Deficient

Over: UNNAMED STREAM

10.7KM PAST TOTEM WAY, Prince of Wales-Hyder, AK

Built 1980 Load: 2.7 t ADT: 20

FDR 6540

Structurally Deficient

Over: STREAM - HAMILTON 60R36

ETOLIN ISLAND, Wrangell City and, AK

Built 1982 Load: 2.7 t

IRR BIA RTE 8PGH

Structurally Deficient

Over: UNNAMED CREEK

14.2 Mi SE of Port Graham, Kenai Peninsula, AK

Built 1997 Load: 3.6 t ADT: 5

IRR BIA RTE 461

Structurally Deficient

Over: UNNAMED CREEK

5.6 MILES EAST OF HYDABUR, Prince of Wales-Hyder, AK

Built 1980 Load: 3.6 t ADT: 10

All Bridges in Alaska

NO DATA ENTERED

Fair

Over: NO DATA ENTERED

FALSE ISLAND, Sitka City and, AK

Built 1996 Load: 32.7 t

LOGGING ROAD

Fair

Over: STREAM

ETOLIN ISLAND, Wrangell City and, AK

Built 1993 Load: 32.7 t

PARKS HIGHWAY

Fair

Over: LITTLE COAL CREEK

MILE POINT 129.0, Matanuska-Susitna, AK

Built 1969 Load: 32.8 t ADT: 970

PARKS HIGHWAY

Fair

Over: ICEWORM GULCH

MILE POINT 204.4, Denali, AK

Built 1971 Load: 33.0 t ADT: 2,670

KNIK RIVER ROAD

Fair

Over: HUNTER CREEK

MILE POINT 9.6, Matanuska-Susitna, AK

Built 1995 Load: 33.0 t ADT: 230

RICHARDSON HIGHWAY

Fair

Over: CLEAR CREEK

MILE POINT 325.4, Fairbanks North Star, AK

Built 1967 Load: 33.3 t ADT: 930

RICHARDSON HIGHWAY

Fair

Over: LITTLE SALCHA RIVER

MILE POINT 329.1, Fairbanks North Star, AK

Built 1967 Load: 33.3 t ADT: 930

TAYLOR HIGHWAY

Fair

Over: WALKER FORK 40 MILE RIV

MILE POINT 80.1, Southeast Fairbanks, AK

Built 1977 Load: 33.4 t ADT: 130

PORTAGE GLACIER RD

Fair

Over: PORTAGE CR OVERFLOW NO 3

MILE POINT 4.1, Anchorage, AK

Built 1966 Load: 33.7 t ADT: 920

STEESE HIGHWAY

Fair

Over: CHENA RIVER (STEESE HWY)

MILE POINT 0.6, Fairbanks North Star, AK

Built 1977 Load: 33.7 t ADT: 23,300

SHEEP CR ROAD

Fair

Over: GOLDSTREAM CREEK

MILE POINT 4.9, Fairbanks North Star, AK

Built 1965 Load: 33.7 t ADT: 3,760

GOOD RIVER ROAD

Fair

Over: GOOD RIVER

MILE POINT 0.1, Hoonah-Angoon, AK

Built 1984 Load: 33.7 t ADT: 10

LAKE OTIS ROAD

Fair

Over: CAMPBELL CREEK, LAKE OTS

MILE POINT 2.1, Anchorage, AK

Built 1966 Load: 33.8 t ADT: 17,400

SEWARD HIGHWAY

Fair

Over: BIRD CREEK

MILE POINT 100.7, Anchorage, AK

Built 1950 Load: 33.9 t ADT: 6,860

PARKS HIGHWAY

Fair

Over: PANGUINGUE CREEK

MILE POINT 216.9, Denali, AK

Built 1965 Load: 33.9 t ADT: 1,640

NO DATA ENTERED

Fair

Over: NO DATA ENTERED

TONKA, Petersburg, AK

Built 2006 Load: 34.0 t ADT: 5

PORTAGE GLACIER RD

Fair

Over: PORTAGE CR OVERFLOW NO 1

MILE POINT 3.2, Anchorage, AK

Built 1965 Load: 34.3 t ADT: 920

OLD SEWARD HIGHWAY

Fair

Over: CAMPBELL CREEK, OLD SWD

MILE POINT 6.7, Anchorage, AK

Built 1982 Load: 34.3 t ADT: 15,400

PARKS HIGHWAY

Fair

Over: DRY CREEK OVERFLOW

MILE POINT 213.7, Denali, AK

Built 1965 Load: 34.3 t ADT: 1,640

2100000-5.47

Fair

Over: PERM

12 MILE, Prince of Wales-Hyder, AK

Built 1985 Load: 34.3 t ADT: 10

IRR:NOME-TELLER RD

Fair

Over: PENNY RIVER

MILE POINT 12.4, Nome, AK

Built 1959 Load: 34.4 t ADT: 20

NASH ROAD

Fair

Over: SMALL CREEK

MILE POINT 1.9, Kenai Peninsula, AK

Built 1973 Load: 34.5 t ADT: 320

DENALI PARK ROAD

Fair

Over: SAVAGE RIVER

14.89 MILES WEST OF AK RO, Yukon-Koyukuk, AK

Built 1983 Load: 34.5 t ADT: 1,300

PARKS HIGHWAY

Fair

Over: DRY CREEK

MILE POINT 214.2, Denali, AK

Built 1965 Load: 34.7 t ADT: 1,640

BACK LOOP RD

Fair

Over: MENDENHALL RIVER

MILE POINT 3.2, Juneau City and, AK

Built 1985 Load: 34.7 t ADT: 4,230

PORTAGE GLACIER RD

Fair

Over: PORTAGE CR OVERFLOW NO 2

MILE POINT 3.5, Anchorage, AK

Built 1965 Load: 35.0 t ADT: 920

PARKS HIGHWAY

Fair

Over: TROUBLESOME CREEK

MILE POINT 102.9, Matanuska-Susitna, AK

Built 1970 Load: 35.3 t ADT: 1,120

IRR BIA RTE 26

Fair

Over: UNNAMED STREAM

8.2KM FROM TOTEM WAY, Prince of Wales-Hyder, AK

Built 1980 Load: 35.3 t ADT: 5

ALASKA HIGHWAY

Fair

Over: GARDINER CREEK

MILE POINT 24.2, Southeast Fairbanks, AK

Built 1983 Load: 35.7 t ADT: 220

ROAD

Fair

Over: STREAM

SALT LAKE BAY, Hoonah-Angoon, AK

Built 2002 Load: 36.0 t

SEWARD HIGHWAY

Fair

Over: INGRAM CREEK

MILE POINT 74.3, Kenai Peninsula, AK

Built 1985 Load: 36.1 t ADT: 3,900

ROAD

Fair

Over: NOME HARBOR

NOME, ALASKA, Nome, AK

Built 2005 Load: 36.3 t ADT: 75

LOGGING ROAD

Fair

Over: STREAM

TONKA, Petersburg, AK

Built 1980 Load: 36.3 t ADT: 5

2050000

Fair

Over: PERM

SHAHEEN, Prince of Wales-Hyder, AK

Built 1987 Load: 36.6 t ADT: 10

TAYLOR HIGHWAY

Fair

Over: COLUMBIA CREEK

MILE POINT 122.9, Southeast Fairbanks, AK

Built 1988 Load: 36.6 t ADT: 20

RICHARDSON HIGHWAY

Fair

Over: TANANA RIVER BIG DELTA

MILE POINT 277.9, Southeast Fairbanks, AK

Built 1966 Load: 36.7 t ADT: 1,990

QUARRY ROAD

Fair

Over: FRENCH CREEK

Approximately 0.6 miles e, Fairbanks North Star, AK

Built 1990 Load: 37.2 t ADT: 300

GLENN HIGHWAY

Fair

Over: MATANUSKA RIV NORTHBOUND

MILE POINT 30.4, Matanuska-Susitna, AK

Built 1965 Load: 37.4 t ADT: 13,300

IRR:NOME-TELLER RD

Fair

Over: CRIPPLE RIVER

MILE POINT 19.4, Nome, AK

Built 1962 Load: 37.7 t ADT: 20

NO DATA ENTERED

Fair

Over: NO DATA ENTERED

ZAREMBO ISLAND, Wrangell City and, AK

Built 2006 Load: 37.9 t

PARKS HIGHWAY

Fair

Over: NENANA RIVER PARK BND

MILE POINT 195.5, Denali, AK

Built 1973 Load: 38.1 t ADT: 1,680

LOGGING ROAD

Fair

Over: CREEK

FALSE ISLAND, Sitka City and, AK

Built 1983 Load: 38.2 t

NORTH TONGASS HWY

Fair

Over: CANNERY CREEK

MILE POINT 3.6, Ketchikan Gateway, AK

Built 1989 Load: 38.5 t ADT: 5,280

IRR:NOME-COUNCIL

Fair

Over: SOLOMON RIVER

MILE POINT 41.0, Nome, AK

Built 1977 Load: 38.5 t ADT: 160

CHINIAK HIGHWAY

Fair

Over: SALT CREEK

MILE POINT 8.6, Kodiak Island, AK

Built 1974 Load: 38.6 t ADT: 600

CHINIAK HIGHWAY

Fair

Over: SMALL CREEK

MILE POINT 8.2, Kodiak Island, AK

Built 1974 Load: 38.7 t ADT: 600

CHINIAK HIGHWAY

Fair

Over: EAST FORK TWIN CREEK

MILE POINT 28.8, Kodiak Island, AK

Built 1974 Load: 38.8 t ADT: 166

ANTON LARSEN BAY

Fair

Over: RED CLOUD RIVER

MILE POINT 7.5, Kodiak Island, AK

Built 1974 Load: 38.8 t ADT: 90

TAYLOR HIGHWAY

Fair

Over: WEST FORK DENNISON RIVER

MILE POINT 48.1, Southeast Fairbanks, AK

Built 1977 Load: 38.8 t ADT: 160

NORTH DOUGLAS HWY

Fair

Over: KOWEE CREEK

MILE POINT 0.1, Juneau City and, AK

Built 1981 Load: 38.9 t ADT: 7,300

Showing 301-350 of 909 bridges

Related

All states → | National rankings → | Understanding conditions → | SD bridges explained →
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges Editorial.

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the FHWA National Bridge Inventory (NBI). A "structurally deficient" rating is a repair-priority signal, not a closure or unsafe-to-cross designation. Consult a qualified civil engineer before making decisions based on this data.

Understanding Bridge Conditions

How FHWA rates bridge condition on a 0-9 scale.

Check Your Daily Bridges

How to look up bridge condition data for bridges on your route.

Read our methodology — how this data is sourced, computed, and verified.