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

DENALI PARK ROAD

Fair

Over: TOKLAT RIVER

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

Built 1987 Load: 39.0 t ADT: 300

DENALI PARK ROAD

Fair

Over: TOKLAT RIVER

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

Built 1987 Load: 39.0 t ADT: 300

CRAIG/KLAWOCK/HOLL

Fair

Over: HARRIS RIVER

MILE POINT 19.4, Prince of Wales-Hyder, AK

Built 1969 Load: 39.4 t ADT: 270

IRR:NOME-COUNCIL

Fair

Over: SAFETY SOUND ESTUARY

MILE POINT 20.8, Nome, AK

Built 1978 Load: 39.5 t ADT: 160

NO DATA ENTERED

Fair

Over: NO DATA ENTERED

ZAREMBO ISLAND, Wrangell City and, AK

Built 2006 Load: 39.5 t

ALASKA HIGHWAY

Fair

Over: YERRICK CREEK

MILE POINT 109.5, Southeast Fairbanks, AK

Built 1985 Load: 39.9 t ADT: 230

LOGGING ROAD

Fair

Over: STREAM

SALT LAKE BAY, Hoonah-Angoon, AK

Built 2003 Load: 40.2 t

GLACIER HIGHWAY

Fair

Over: PETERSON CREEK

MILE POINT 23.0, Juneau City and, AK

Built 1986 Load: 40.4 t ADT: 630

IRR:CRAIG/KLWK HWY

Fair

Over: KLAWOCK RIVER

MILE POINT 6.6, Prince of Wales-Hyder, AK

Built 1990 Load: 40.4 t ADT: 1,990

HYDABURG HIGHWAY

Fair

Over: FUBAR CREEK

MILE POINT 21.5, Prince of Wales-Hyder, AK

Built 1976 Load: 40.4 t ADT: 130

CHINIAK HIGHWAY

Fair

Over: SALONIE CREEK NO. 1

MILE POINT 0.7, Kodiak Island, AK

Built 1980 Load: 40.5 t ADT: 600

CIRCLE HOT SPRINGS

Fair

Over: DEADWOOD CREEK

MILE POINT 38.8, Yukon-Koyukuk, AK

Built 1975 Load: 40.6 t ADT: 120

IRR:CHICKALOON FRK

Fair

Over: CHICKALOON RIVER NO. 1

MILE POINT 0.5, Matanuska-Susitna, AK

Built 1982 Load: 40.7 t ADT: 40

ALASKA HIGHWAY

Fair

Over: SCOTTIE CREEK

MILE POINT 2.0, Southeast Fairbanks, AK

Built 1995 Load: 40.7 t ADT: 220

PORCUPINE ROAD

Fair

Over: BEAR CREEK

MILE POINT 8.9, Haines, AK

Built 2003 Load: 40.8 t ADT: 10

EXIT GLACIER ROAD

Fair

Over: RESURRECTION RIVER

7.5 miles west of Seward, Kenai Peninsula, AK

Built 1985 Load: 40.8 t ADT: 200

FDR 50050

Fair

Over: STREAM - PERM

WRANGELL ISLAND, Wrangell City and, AK

Built 1988 Load: 41.1 t ADT: 10

ALASKA HIGHWAY

Fair

Over: BEAVER CREEK

MILE POINT 44.9, Southeast Fairbanks, AK

Built 1986 Load: 41.4 t ADT: 260

ALASKA HIGHWAY

Fair

Over: CHIEF CREEK

MILE POINT 134.6, Southeast Fairbanks, AK

Built 1985 Load: 41.5 t ADT: 190

SEWARD HIGHWAY

Fair

Over: EAST FORK SIX MILE CREEK

MILE POINT 60.7, Kenai Peninsula, AK

Built 1995 Load: 41.8 t ADT: 3,480

EGAN DRIVE

Fair

Over: GOLD CREEK

MILE POINT 0.4, Juneau City and, AK

Built 1972 Load: 41.9 t ADT: 10,200

43500

Fair

Over: LOG

TONKA, Petersburg, AK

Built 2002 Load: 42.1 t ADT: 5

SEWARD HIGHWAY

Fair

Over: GRANITE CREEK

MILE POINT 62.5, Kenai Peninsula, AK

Built 1995 Load: 42.4 t ADT: 3,480

LOGGING ROAD

Fair

Over: STREAM

KUIU ISLAND, Petersburg, AK

Built 1990 Load: 42.4 t

RICHARDSON HIGHWAY

Fair

Over: SOURDOUGH CREEK

MILE POINT 150.5, Copper River, AK

Built 1987 Load: 42.8 t ADT: 330

STERLING HIGHWAY

Fair

Over: KENAI RIVER (SOLDOTNA)

MILE POINT 58.2, Kenai Peninsula, AK

Built 2007 Load: 43.0 t ADT: 15,100

MANCHU LAKE RD

Fair

Over: MOOSE CREEK

EIESON AFB TA, Fairbanks North Star, AK

Built 2005 Load: 43.1 t ADT: 100

LOGGING ROAD

Fair

Over: STREAM

KUPREANOF ISLAND, PORTAGE, Petersburg, AK

Built 1980 Load: 43.1 t

FDR 6265

Fair

Over: STREAM -PERM

WRANGELL ISLAND, Wrangell City and, AK

Built 1980 Load: 43.1 t ADT: 50

PARKS HIGHWAY

Fair

Over: GLENN PARKS OVERHEAD NB

MILE POINT 0.7, Matanuska-Susitna, AK

Built 2004 Load: 43.5 t ADT: 3,272

TAYLOR HIGHWAY

Fair

Over: AMERICAN CREEK NO 2

MILE POINT 150.4, Southeast Fairbanks, AK

Built 1988 Load: 43.8 t ADT: 20

IRR:MARINE HWY RTE

Fair

Over: CHENEGA DOCK

CHENEGA BAY, Chugach, AK

Built 1995 Load: 44.5 t ADT: 10

3000000-23.23

Fair

Over: PERM

THORNE BAY, Prince of Wales-Hyder, AK

Built 1985 Load: 44.7 t ADT: 50

3000000-93.844

Fair

Over: PERM

WHALE PASS, Prince of Wales-Hyder, AK

Built 1987 Load: 44.7 t ADT: 10

LOGGING ROAD

Fair

Over: STREAM

TONKA, Petersburg, AK

Built 2014 Load: 45.0 t ADT: 10

TAYLOR HIGHWAY

Fair

Over: DISCOVERY FORK CREEK

MILE POINT 147.2, Southeast Fairbanks, AK

Built 1988 Load: 45.3 t ADT: 20

2000648-0.43

Fair

Over: PERM

NAUKATI, Prince of Wales-Hyder, AK

Built 1984 Load: 45.4 t ADT: 10

RICHARDSON HIGHWAY

Fair

Over: SALCHA RIVER

MILE POINT 324.7, Fairbanks North Star, AK

Built 1967 Load: 45.6 t ADT: 930

TOK CUTOFF

Fair

Over: MABEL CREEK

MILE POINT 75.3, Copper River, AK

Built 2006 Load: 45.7 t ADT: 220

ALASKA HIGHWAY

Fair

Over: SAWMILL CREEK

MILE POINT 179.6, Southeast Fairbanks, AK

Built 1995 Load: 46.0 t ADT: 750

CRAIG/KLAWOCK/HOLL

Fair

Over: MAYBESO CREEK

MILE POINT 28.2, Prince of Wales-Hyder, AK

Built 1985 Load: 46.2 t ADT: 140

TAYLOR HIGHWAY

Fair

Over: KING SOLOMON CREEK

MILE POINT 130.0, Southeast Fairbanks, AK

Built 1988 Load: 46.4 t ADT: 20

FDR 6270

Fair

Over: STREAM - PERM

WRANGELL ISLAND, Wrangell City and, AK

Built 1982 Load: 46.7 t ADT: 10

2050400-1.69

Fair

Over: PERM

STANEY, Prince of Wales-Hyder, AK

Built 1988 Load: 47.3 t ADT: 10

IRR BIA RTE 26

Fair

Over: UNNAMED STREAM

16.9KM NORTH OF KAKE, Prince of Wales-Hyder, AK

Built 1980 Load: 47.5 t ADT: 5

FDR 6299

Fair

Over: STREAM - PERM

WRANGELL ISLAND, Wrangell City and, AK

Built 1982 Load: 47.6 t ADT: 10

NO DATA ENTERED

Fair

Over: NO DATA ENTERED

ZAREMBO ISLAND, Wrangell City and, AK

Built 2005 Load: 49.6 t

8430000

Fair

Over: PERM

SHOAL COVE, Ketchikan Gateway, AK

Built 1982 Load: 49.9 t ADT: 5

LOGGING ROAD

Fair

Over: STREAM

MITKOF ISLAND, Petersburg, AK

Built 1988 Load: 49.9 t ADT: 10

LOGGING ROAD

Fair

Over: FALSE CREEK

FALSE ISLAND, Sitka City and, AK

Built 1982 Load: 49.9 t

Showing 351-400 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.