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

IRR BIA RTE 22

Fair

Over: UNNAMED STREAM

6.8KM PAST TOTEM WAY, Prince of Wales-Hyder, AK

Built 1980 Load: 28.3 t ADT: 20

COPPER RIVER HWY

Fair

Over: SCOTT GLACIER NO 9

MILE POINT 10.4, Chugach, AK

Built 1966 Load: 29.0 t ADT: 520

COPPER RIVER HWY

Fair

Over: SCOTT GLACIER NO 10

MILE POINT 10.8, Chugach, AK

Built 1966 Load: 29.0 t ADT: 520

COPPER RIVER HWY

Fair

Over: SCOTT GLACIER NO 11

MILE POINT 11.0, Chugach, AK

Built 1966 Load: 29.0 t ADT: 520

CHENA HOT SPR RD

Fair

Over: NORTH FORK CHENA RIVER

MILE POINT 44.0, Fairbanks North Star, AK

Built 1967 Load: 29.0 t ADT: 530

STERLING HIGHWAY

Fair

Over: NINILCHIK RIVER

MILE POINT 95.7, Kenai Peninsula, AK

Built 1965 Load: 29.0 t ADT: 2,420

WINTER TRAIL ROAD

Fair

Over: NORTH RIVER

INTERSECTION OF DIKE ROAD, Nome, AK

Built 2011 Load: 29.0 t ADT: 50

PARKS HIGHWAY

Fair

Over: CARLO CREEK

MILE POINT 188.4, Denali, AK

Built 1973 Load: 29.1 t ADT: 1,090

CHENA HOT SPR RD

Fair

Over: WEST FORK CHENA RIVER

MILE POINT 52.4, Fairbanks North Star, AK

Built 1967 Load: 29.1 t ADT: 530

IRR:NOME-TELLER RD

Fair

Over: GOLD RUN CREEK

MILE POINT 52.8, Nome, AK

Built 1967 Load: 29.1 t ADT: 20

IRR:NOME-TELLER RD

Fair

Over: BLUESTONE RIVER

MILE POINT 56.9, Nome, AK

Built 1967 Load: 29.1 t ADT: 20

MITKOF HIGHWAY

Fair

Over: FALLS CREEK

MILE POINT 9.7, Petersburg, AK

Built 1967 Load: 29.1 t ADT: 180

IRR BIA RTE 27

Fair

Over: GUNNUK CREEK

5.7KM NORTH OF LANDFILL, Prince of Wales-Hyder, AK

Built 1980 Load: 29.2 t ADT: 6

RICHARDSON HIGHWAY

Fair

Over: TAZLINA RIVER

MILE POINT 113.4, Copper River, AK

Built 1973 Load: 29.4 t ADT: 640

STERLING HIGHWAY

Fair

Over: DEEP CREEK

MILE POINT 97.4, Kenai Peninsula, AK

Built 1965 Load: 29.4 t ADT: 3,380

KLONDIKE HIGHWAY

Fair

Over: SKAGWAY RIVER

MILE POINT 1.8, Skagway, AK

Built 1974 Load: 29.4 t ADT: 1,200

PARKS HIGHWAY

Fair

Over: FISH CREEK

MILE POINT 261.1, Yukon-Koyukuk, AK

Built 1965 Load: 29.4 t ADT: 1,410

CHENA HOT SPR RD

Fair

Over: NORTH FORK CHENA RIVER

MILE POINT 37.8, Fairbanks North Star, AK

Built 1967 Load: 29.5 t ADT: 530

PARKS HIGHWAY

Fair

Over: EAST FORK CHULITNA RIVER

MILE POINT 150.8, Matanuska-Susitna, AK

Built 1967 Load: 29.6 t ADT: 900

IRR BIA RTE 26

Fair

Over: UNNAMED STREAM

17.3KM NORTH OF KAKE, Prince of Wales-Hyder, AK

Built 1980 Load: 29.7 t ADT: 5

ARCTIC BLVD

Fair

Over: CAMPBELL CREEK, ARCTIC

MILE POINT 4.6, Anchorage, AK

Built 1979 Load: 29.8 t ADT: 6,470

MARINE HWY ROUTE

Fair

Over: HAINES FERRY TERMINAL

HAINES, Haines, AK

Built 1984 Load: 29.8 t ADT: 43

TIDAL OP STL SPAN

Fair

Over: KETCHIKAN BERTH II

KETCHIKAN, Ketchikan Gateway, AK

Built 1986 Load: 29.8 t ADT: 250

STEESE HIGHWAY

Fair

Over: MCKAY CREEK

MILE POINT 41.0, Fairbanks North Star, AK

Built 1967 Load: 30.0 t ADT: 120

ROAD

Fair

Over: NO DATA ENTERED

FRESHWATER, Hoonah-Angoon, AK

Built 1982 Load: 30.1 t

3015231-0.570

Fair

Over: NO DATA ENTERED

THORNE BAY, Prince of Wales-Hyder, AK

Built 1993 Load: 30.1 t ADT: 5

RICHARDSON HIGHWAY

Fair

Over: MOOSE CREEK EAST BOUND

MILE POINT 345.9, Fairbanks North Star, AK

Built 1971 Load: 30.2 t ADT: 2,500

WILLOW/FISHHOOK RD

Fair

Over: DECEPTION CREEK

MILE POINT 30.4, Matanuska-Susitna, AK

Built 1972 Load: 30.2 t ADT: 580

BRADLEY ROAD

Fair

Over: TRAPPER CREEK

MILE POINT 0.8, Matanuska-Susitna, AK

Built 1992 Load: 30.3 t ADT: 110

IRR:NOME-TELLER RD

Fair

Over: ELDORADO CREEK

MILE POINT 46.3, Nome, AK

Built 1967 Load: 30.3 t ADT: 20

TED STEVENS WAY

Fair

Over: SWAN LAKE

MILE POINT 0.3, Northwest Arctic, AK

Built 1985 Load: 30.3 t ADT: 320

N SUSHANA ST

Fair

Over: LITTLE SUSITNA RIVER

WASILLA, Matanuska-Susitna, AK

Built 1984 Load: 30.4 t ADT: 10

IRR:NOME-COUNCIL

Fair

Over: NOME RIVER

MILE POINT 2.6, Nome, AK

Built 1967 Load: 30.4 t ADT: 430

LOG HAUL COLLECTOR

Fair

Over: NO DATA ENTERED

SHAHEEN, Prince of Wales-Hyder, AK

Built 1993 Load: 30.5 t

RICHARDSON HIGHWAY

Fair

Over: SHEEP CREEK

MILE POINT 22.5, Chugach, AK

Built 1961 Load: 30.6 t ADT: 810

PARKS HIGHWAY

Fair

Over: LITTLE WILLOW CREEK

MILE POINT 39.8, Matanuska-Susitna, AK

Built 1962 Load: 30.6 t ADT: 3,000

OLD GLENN, PALMER

Fair

Over: KNIK RIVER

MILE POINT 8.7, Matanuska-Susitna, AK

Built 1975 Load: 30.6 t ADT: 1,380

NORTH 'C'

Fair

Over: SHIP CREEK

MILE POINT 0.1, Anchorage, AK

Built 1992 Load: 30.8 t ADT: 2,340

HEALY SPUR ROAD

Fair

Over: NENANA RIVER AT HEALY

MILE POINT 3.2, Denali, AK

Built 1971 Load: 30.8 t ADT: 720

DANGEROUS RIVER RD

Fair

Over: AHRNKLIN RIVER

MILE POINT 24.8, Yakutat City and, AK

Built 1974 Load: 31.0 t ADT: 40

IRR BIA RTE 8PGH

Fair

Over: UNNAMED STREAM

4.0KM DOWN 8PGH, Kenai Peninsula, AK

Built 1995 Load: 31.1 t ADT: 10

DIMND-MINN ON-RAMP

Fair

Over: CAMPBELL CREEK, NB RAMP

MILE POINT 0.0, Anchorage, AK

Built 1981 Load: 31.2 t ADT: 4,690

STERLING HIGHWAY

Fair

Over: KENAI RIVER (COOPER LND)

MILE POINT 11.0, Kenai Peninsula, AK

Built 1965 Load: 31.2 t ADT: 2,830

TAYLOR HIGHWAY

Fair

Over: SOUTH FORK 40 MILE RIVER

MILE POINT 73.7, Southeast Fairbanks, AK

Built 1977 Load: 31.2 t ADT: 130

TOK CUTOFF

Fair

Over: BARTELL CREEK

MILE POINT 82.1, Copper River, AK

Built 1980 Load: 31.4 t ADT: 280

HARBOR DRIVE

Fair

Over: SITKA HARBOR

MILE POINT 0.5, Sitka City and, AK

Built 1971 Load: 31.5 t ADT: 3,600

DYEA ROAD

Fair

Over: TAIYA RIVER

MILE POINT 7.1, Skagway, AK

Built 1948 Load: 31.5 t ADT: 238

COPPER RIVER HWY

Fair

Over: ALAGANIK SLOUGH

MILE POINT 22.3, Chugach, AK

Built 1987 Load: 31.6 t ADT: 40

ELLIOTT HIGHWAY

Fair

Over: TOLOVANA RIVER

MILE POINT 54.6, Yukon-Koyukuk, AK

Built 1969 Load: 31.6 t ADT: 270

UNNAMED ROAD

Fair

Over: UNNAMED CREEK

18.6 MILES EAST OF HYDABU, Prince of Wales-Hyder, AK

Built 1995 Load: 31.7 t ADT: 20

Showing 201-250 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.