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

Data updated May 2026

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

Alaska42.4%47.3%10.2%GoodFairPoor (structurally 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.

MO

Missouri

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

MI

Michigan

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

AK

Alaska

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

PA

Pennsylvania

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

ND

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.

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.