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

15TH AVENUE

Unknown

Over: 15TH AVENUE OC A ST

MILE POINT 1.2, Anchorage, AK

Built 1985 ADT: 10,700

ANCH INTL AIRPORT

Unknown

Over: AIA ACCESS ROAD RAMP

MILE POINT 0.1, Anchorage, AK

Built 1968 ADT: 2,020

ARTILLERY ROAD

Unknown

Over: ARTILLERY RD OVERXING

MILE POINT 0.1, Anchorage, AK

Built 1974 ADT: 44,000

GLENN HIGHWAY

Unknown

Over: EDMONDS LAKE U.C. - N.B.

MILE POINT 22.7, Anchorage, AK

Built 1977 ADT: 250

ALASKA RAILROAD

Unknown

Over: PARKS HIGHWAY UNDERPASS

MILE POINT 201.1, Denali, AK

Built 1968 ADT: 1,680

PARKS HIGHWAY

Unknown

Over: PARKS/CHENA RIDGE SB

MILE POINT 318.6, Fairbanks North Star, AK

Built 1997 ADT: 16,500

PARKS HIGHWAY

Unknown

Over: PARKS/CHENA RIDGE NB

MILE POINT 318.5, Fairbanks North Star, AK

Built 1997 ADT: 16,500

RICHARDSON HIGHWAY

Unknown

Over: BADGER LOOP U.C.

MILE POINT 358.0, Fairbanks North Star, AK

Built 2002 ADT: 4,460

RICHARDSON HIGHWAY

Unknown

Over: DAWSON ROAD UC

MILE POINT 348.8, Fairbanks North Star, AK

Built 2008 ADT: 2,260

TANANA BRIDGE ROAD

Fair

Over: BOUNDRY SLOUGH

1.0 KM W-SW TANANA R BR, Fairbanks North Star, AK

Built 2012 ADT: 10

8000000

Fair

Over: PERM

WARD LAKE, Ketchikan Gateway, AK

Built 1978 ADT: 100

NO DATA ENTERED

Fair

Over: STREAM

THORNE BAY, Prince of Wales-Hyder, AK

Built 2003 ADT: 50

IRR BIA RTE 1029

Fair

Over: SWAMPY POND

0.1KM SOUTH OF IRA OFFICE, Kenai Peninsula, AK

Built 2000 Load: 1.1 t ADT: 200

YOUNG ST/SAYLES ST

Fair

Over: DUNTON ST VIADUCT

MILE POINT 0.1, Ketchikan Gateway, AK

Built 1979 Load: 3.1 t ADT: 565

IRR BIA RTE 1029

Fair

Over: UNNAMED TIDAL SLOUGH

.75KM SOUTHEAST OF SCHOOL, Bethel, AK

Built 2002 Load: 5.0 t ADT: 300

IRR BIA RTE 1001

Fair

Over: UNNAMED TIDAL RIVER

NEAR WATER RESEVIOR, Bethel, AK

Built 2003 Load: 5.0 t ADT: 25

WINTER TRAIL

Fair

Over: CREEK

On Blair Lake Range. Con, Fairbanks North Star, AK

Built 1998 Load: 5.4 t ADT: 10

MARINE HWY ROUTE

Fair

Over: TENAKEE CITY DOCK

TENAKEE, Hoonah-Angoon, AK

Built 1977 Load: 8.8 t ADT: 10

STERLING L/OPHIR

Fair

Over: YANKEE CREEK

MILE POINT 35.2, Yukon-Koyukuk, AK

Built 1937 Load: 8.9 t ADT: 45

INDIAN MOUNTAIN RO

Fair

Over: INDIAN MOUNTAIN RIVER

Located on restricted ran, Fairbanks North Star, AK

Built 1960 Load: 10.0 t ADT: 2

IRR:NOME-TAYLOR RD

Fair

Over: KOUGAROK RIVER

MILE POINT 85.4, Nome, AK

Built 1941 Load: 11.4 t ADT: 50

QUARTZ CREEK ROAD

Fair

Over: CRESCENT CREEK

MILE POINT 2.6, Kenai Peninsula, AK

Built 1959 Load: 12.2 t ADT: 100

STERLING L/OPHIR

Fair

Over: TATALINA RIVER

MILE POINT 12.5, Yukon-Koyukuk, AK

Built 1947 Load: 12.5 t ADT: 45

TRANSMITTER ROAD

Fair

Over: MOOSE CREEK

Located approximately 0.5, Fairbanks North Star, AK

Built 1960 Load: 12.7 t ADT: 200

BAY ROAD

Fair

Over: RUSHING CREEK

4.1KM SE OF PEDRO BAY, Lake and Peninsula, AK

Built 1985 Load: 12.7 t ADT: 30

STERLING L/OPHIR

Fair

Over: GANES CREEK

MILE POINT 37.1, Yukon-Koyukuk, AK

Built 1937 Load: 12.8 t ADT: 45

POLE LINE ROAD

Fair

Over: EAGLE RIVER

Approximately 0.6 miles s, Anchorage, AK

Built 1970 Load: 13.6 t ADT: 100

2051000-0.28

Fair

Over: PERM

SHAHEEN, Prince of Wales-Hyder, AK

Built 1987 Load: 14.9 t ADT: 10

BIA ROUTE 2800

Fair

Over: DAHL CREEK

1KM N OF DAHL CREEK AIRST, Northwest Arctic, AK

Built 2010 Load: 15.0 t ADT: 25

LOGGING ROAD

Fair

Over: STREAM

MITKOF ISLAND, Petersburg, AK

Built 1974 Load: 15.2 t ADT: 50

LOGGING ROAD

Fair

Over: KUSHTAKAA CREEK

HOMESHORE, Haines, AK

Built 1985 Load: 16.2 t

LOGGING ROAD

Fair

Over: WUKUKLOOK CREEK

WUKUKLOOK GYPSUM, Hoonah-Angoon, AK

Built 1989 Load: 16.2 t ADT: 10

LOGGING ROAD

Fair

Over: CREEK

GAME CREEK, Hoonah-Angoon, AK

Built 1994 Load: 16.2 t ADT: 50

LOGGING ROAD

Fair

Over: CREEK

FRESHWATER, Hoonah-Angoon, AK

Built 1985 Load: 16.2 t ADT: 10

LOGGING ROAD

Fair

Over: STREAM

MITKOF ISLAND, Petersburg, AK

Built 1987 Load: 16.2 t ADT: 30

LOGGING ROAD

Fair

Over: STREAM

KUIU ISLAND, Petersburg, AK

Built 1984 Load: 16.2 t ADT: 5

LOGGING ROAD

Fair

Over: STREAM

KUIU ISLAND, Petersburg, AK

Built 1985 Load: 16.2 t

LOGGING ROAD

Fair

Over: STREAM

KUIU ISLAND, Petersburg, AK

Built 1984 Load: 16.2 t ADT: 5

LOGGING ROAD

Fair

Over: STREAM

KUIU ISLAND, Petersburg, AK

Built 1985 Load: 16.2 t ADT: 5

LOGGING ROAD

Fair

Over: CREEK

MITKOF ISLAND, Petersburg, AK

Built 1984 Load: 16.2 t

3016000-0.63

Fair

Over: PERM

THORNE BAY, Prince of Wales-Hyder, AK

Built 1990 Load: 16.2 t ADT: 5

LOGGING ROAD

Fair

Over: CREEK

CORNER BAY, Sitka City and, AK

Built 1985 Load: 16.2 t

LOGGING ROAD

Fair

Over: KOOK CREEK

CORNER BAY, Sitka City and, AK

Built 1988 Load: 16.2 t

LOGGING ROAD

Fair

Over: STREAM - 1991

CORNER BAY, Sitka City and, AK

Built 1991 Load: 16.2 t

9TH STREET

Fair

Over: GOLD CREEK NINTH ST

MILE POINT 0.1, Juneau City and, AK

Built 1934 Load: 16.4 t ADT: 953

WILLOUGHBY AVE

Fair

Over: GOLD CREEK

MILE POINT 1.9, Juneau City and, AK

Built 1934 Load: 16.4 t ADT: 6,139

ROAD

Fair

Over: STREAM

SALT LAKE BAY, Hoonah-Angoon, AK

Built 2002 Load: 16.8 t

NO DATA ENTERED

Fair

Over: NO DATA ENTERED

MITKOF ISLAND, Petersburg, AK

Built 2005 Load: 16.8 t ADT: 10

CHAKOK ROAD

Fair

Over: NORTH FORK ANCHOR RIVER

MILE POINT 0.1, Kenai Peninsula, AK

Built 1987 Load: 17.1 t ADT: 10

LOGGING ROAD

Fair

Over: STREAM

KUPREANOF ISLAND, PORTAGE, Petersburg, AK

Built 1981 Load: 17.2 t

Showing 1-50 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.