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

STERLING HIGHWAY

Good

Over: STARISKI CREEK

MILE POINT 111.0, Kenai Peninsula, AK

Built 2007 Load: 41.0 t ADT: 2,170

3000000-33.49

Good

Over: PERM

RATZ, Prince of Wales-Hyder, AK

Built 1993 Load: 41.1 t ADT: 50

LOGGING ROAD

Good

Over: STREAM

GAME CREEK, Hoonah-Angoon, AK

Built 1994 Load: 41.5 t ADT: 10

CHINIAK HIGHWAY

Good

Over: UNNAMED CREEK, SITE 5

MILE POINT 21.8, Kodiak Island, AK

Built 2019 Load: 41.5 t ADT: 210

2030000-0.81

Good

Over: PERM

CONTROL LAKE, Prince of Wales-Hyder, AK

Built 2000 Load: 41.5 t ADT: 10

2030000-0.31

Good

Over: PERM

CONTROL LAKE, Prince of Wales-Hyder, AK

Built 2000 Load: 41.8 t ADT: 10

3000000-37.88

Good

Over: PERM

RATZ, Prince of Wales-Hyder, AK

Built 1991 Load: 41.8 t ADT: 50

SEWARD HIGHWAY

Good

Over: SALMON CREEK

MILE POINT 6.0, Kenai Peninsula, AK

Built 1979 Load: 41.9 t ADT: 3,510

LOGGING ROAD

Good

Over: STREAM

MITKOF ISLAND, Petersburg, AK

Built 1980 Load: 42.1 t ADT: 50

FDR 6590

Good

Over: STREAM - PERM

ZAREMBO ISLAND, Wrangell City and, AK

Built 1985 Load: 42.1 t ADT: 5

2050000

Good

Over: PERM

STANEY, Prince of Wales-Hyder, AK

Built 1989 Load: 42.4 t ADT: 10

UNIVERSITY AVE

Good

Over: CHENA RIVER (UNIV AVE)

MILE POINT 0.4, Fairbanks North Star, AK

Built 2021 Load: 42.7 t ADT: 14,700

NOME CREEK ROAD-EA

Good

Over: Nome Creek

7 mi N of AK6N/Steese Hwy, Fairbanks North Star, AK

Built 1998 Load: 42.8 t ADT: 50

ROAD

Good

Over: NO DATA ENTERED

IYOUKTUG, Hoonah-Angoon, AK

Built 1993 Load: 42.8 t ADT: 10

8440000

Good

Over: PERM

SHOAL COVE, Ketchikan Gateway, AK

Built 1987 Load: 42.8 t ADT: 5

3000000-85.912

Good

Over: PERM

WHALE PASS, Prince of Wales-Hyder, AK

Built 1987 Load: 42.8 t ADT: 10

LOGGING ROAD

Good

Over: STREAM

KUIU ISLAND, Petersburg, AK

Built 1991 Load: 43.1 t

LOGGING ROAD

Good

Over: TRAIL #317544

FALSE ISLAND, Sitka City and, AK

Built 1995 Load: 43.1 t

TOK CUTOFF

Good

Over: SINONA CREEK

MILE POINT 34.0, Copper River, AK

Built 2005 Load: 43.3 t ADT: 330

LOGGING ROAD

Good

Over: STREAM

KUIU ISLAND, Petersburg, AK

Built 1990 Load: 43.4 t ADT: 5

2100000-17.53

Good

Over: PERM

POLK, Prince of Wales-Hyder, AK

Built 1985 Load: 43.4 t ADT: 10

2000000-12.651

Good

Over: PERM

NAUKATI, Prince of Wales-Hyder, AK

Built 1978 Load: 43.4 t ADT: 50

2000000-125.951

Good

Over: PERM 125.951

LAB BAY, Prince of Wales-Hyder, AK

Built 1987 Load: 43.4 t ADT: 10

FDR 6265

Good

Over: STREAM - PERM

WRANGELL ISLAND, Wrangell City and, AK

Built 1989 Load: 43.4 t ADT: 50

BULLDOG TRAIL

Good

Over: CHESTER CREEK

Approximately 0.3 miles s, Anchorage, AK

Built 2009 Load: 43.5 t ADT: 100

LOGGING ROAD

Good

Over: STREAM

FRESHWATER WACHUSETT COVE, Hoonah-Angoon, AK

Built 1993 Load: 43.7 t

2050300-0.44

Good

Over: PERM

STANEY, Prince of Wales-Hyder, AK

Built 1984 Load: 43.7 t ADT: 10

NO DATA ENTERED

Good

Over: BIG CREEK

WHALE PASS, Prince of Wales-Hyder, AK

Built 2014 Load: 43.7 t ADT: 50

NO DATA ENTERED

Good

Over: NO DATA ENTERED

RATZ, Prince of Wales-Hyder, AK

Built 2014 Load: 43.7 t ADT: 50

IRR:JAFET DRIVE

Good

Over: SNAKE RIVER

MILE POINT 0.1, Nome, AK

Built 2013 Load: 44.1 t ADT: 1,000

6402-20.96

Good

Over: STREAM

KUIU ISLAND, Petersburg, AK

Built 1991 Load: 44.1 t

LOGGING ROAD

Good

Over: CREEK

SUNTAHEEN, Hoonah-Angoon, AK

Built 1994 Load: 45.0 t ADT: 10

WATER STREET

Good

Over: WATER ST NO 2

MILE POINT 0.2, Ketchikan Gateway, AK

Built 2018 Load: 45.1 t ADT: 650

SEWARD HIGHWAY

Good

Over: INDIAN CREEK

MILE POINT 102.1, Anchorage, AK

Built 2021 Load: 45.4 t ADT: 6,860

LOGGING ROAD

Good

Over: STREAM

KUPREANOF ISLAND AT KAKE, Petersburg, AK

Built 1984 Load: 45.4 t ADT: 10

2058000-4.13

Good

Over: PERM

NAUKATI, Prince of Wales-Hyder, AK

Built 1984 Load: 45.4 t ADT: 20

IRR BIA RTE 15

Good

Over: UNNAMED STREAM

7.1KM DOWN FS6326 FR 6314, Prince of Wales-Hyder, AK

Built 2003 Load: 45.5 t ADT: 1

TOK CUTOFF

Good

Over: SLANA SLOUGH

MILE POINT 74.8, Copper River, AK

Built 2006 Load: 45.7 t ADT: 220

LOGGING ROAD

Good

Over: TENNIS SHOE CREEK

SUNTAHEEN, Hoonah-Angoon, AK

Built 1994 Load: 45.7 t ADT: 50

LOGGING ROAD

Good

Over: STREAM

KUPREANOF ISLAND AT KAKE, Petersburg, AK

Built 1983 Load: 45.7 t ADT: 10

2000000-121.505

Good

Over: PERM

LAB BAY, Prince of Wales-Hyder, AK

Built 1987 Load: 45.7 t ADT: 10

2000000-124.232

Good

Over: PERM 124.232

LAB BAY, Prince of Wales-Hyder, AK

Built 1987 Load: 45.7 t ADT: 10

LOGGING ROAD

Good

Over: CORNER CREEK

CORNER BAY, Sitka City and, AK

Built 1983 Load: 45.7 t

8400000

Good

Over: PERM

SHOAL COVE, Ketchikan Gateway, AK

Built 1985 Load: 46.0 t ADT: 5

LOGGING ROAD

Good

Over: STREAM

MITKOF ISLAND, Petersburg, AK

Built 1987 Load: 46.0 t ADT: 10

LOGGING ROAD

Good

Over: STREAM

KUIU ISLAND, Petersburg, AK

Built 1984 Load: 46.0 t ADT: 5

2100000-15.18

Good

Over: PERM

POLK, Prince of Wales-Hyder, AK

Built 1985 Load: 46.0 t ADT: 10

2050000

Good

Over: PERM

STANEY, Prince of Wales-Hyder, AK

Built 1984 Load: 46.3 t ADT: 10

FDR 6273

Good

Over: STREAM - PERM

WRANGELL ISLAND, Wrangell City and, AK

Built 1986 Load: 46.3 t ADT: 10

2150000-3.74

Good

Over: PERM

POLK, Prince of Wales-Hyder, AK

Built 1988 Load: 46.7 t

Showing 651-700 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.