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

2100000-12.741

Fair

Over: MOD

POLK, Prince of Wales-Hyder, AK

Built 1989 Load: 17.2 t ADT: 10

2900000-15.69

Fair

Over: MOD 15.69

LAB BAY, Prince of Wales-Hyder, AK

Built 1989 Load: 17.2 t

TRAIL RIVER CG RD

Fair

Over: TRAIL RIVER

24 MI. N. OF SEWARD, Kenai Peninsula, AK

Built 1965 Load: 17.5 t ADT: 10

ROAD

Fair

Over: STREAM

SALT LAKE BAY, Hoonah-Angoon, AK

Built 2002 Load: 17.8 t

LOGGING ROAD

Fair

Over: STREAM

KUPREANOF ISLAND, PORTAGE, Petersburg, AK

Built 1980 Load: 17.8 t

IRR:NOME-TAYLOR RD

Fair

Over: KUZITRIN RIVER

MILE POINT 67.9, Nome, AK

Built 1961 Load: 18.1 t ADT: 50

DENALI PARK ROAD

Fair

Over: GHIGLIONE CREEK

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

Built 1960 Load: 18.1 t ADT: 300

DENALI PARK ROAD

Fair

Over: STONY CREEK

60.7 MILES WEST OF AK ROU, Yukon-Koyukuk, AK

Built 1957 Load: 18.1 t ADT: 300

LOGGING ROAD

Fair

Over: STREAM

SALT LAKE BAY, Hoonah-Angoon, AK

Built 2003 Load: 18.5 t

LOGGING ROAD

Fair

Over: STREAM

KUIU ISLAND, Petersburg, AK

Built 1978 Load: 18.8 t

91 MILE LOOP

Fair

Over: TRAIL CREEK

OLD TOK ALIGNMENT MP 0.9, Copper River, AK

Built 1951 Load: 18.9 t ADT: 15

COPPER RIVER ROAD

Fair

Over: NATIONAL CREEK

60.6 MILES EAST OF CHITIN, Wrangell City and, AK

Built 2009 Load: 19.0 t ADT: 1

ROAD

Fair

Over: STREAM

SALT LAKE BAY, Hoonah-Angoon, AK

Built 2002 Load: 19.1 t

DENALI HIGHWAY

Fair

Over: BRUSHKANA CREEK

MILE POINT 104.7, Matanuska-Susitna, AK

Built 1955 Load: 19.2 t ADT: 60

LOGGING ROAD

Fair

Over: STREAM

HOMESHORE, Haines, AK

Built 1980 Load: 19.8 t

LOGGING ROAD

Fair

Over: SPASSKI CREEK

HOONAH - LONG ISLAND, Hoonah-Angoon, AK

Built 1990 Load: 19.8 t ADT: 50

LOGGING ROAD

Fair

Over: CREEK

WUKUKLOOK GYPSUM, Hoonah-Angoon, AK

Built 1989 Load: 19.8 t ADT: 10

NO DATA ENTERED

Fair

Over: CREEK

IYOUKTUG, Hoonah-Angoon, AK

Built 1990 Load: 19.8 t

NO DATA ENTERED

Fair

Over: NO DATA ENTERED

IYOUKTUG, Hoonah-Angoon, AK

Built 1990 Load: 19.8 t

LOGGING ROAD

Fair

Over: STREAM

SALT LAKE BAY, Hoonah-Angoon, AK

Built 1975 Load: 19.8 t

LOGGING ROAD

Fair

Over: CREEK

FRESHWATER, Hoonah-Angoon, AK

Built 1982 Load: 19.8 t ADT: 10

LOGGING ROAD

Fair

Over: CREEK

FRESHWATER, Hoonah-Angoon, AK

Built 1982 Load: 19.8 t ADT: 10

LOGGING ROAD

Fair

Over: FRESHWATER CREEK

FRESHWATER, Hoonah-Angoon, AK

Built 1982 Load: 19.8 t ADT: 10

LOGGING ROAD

Fair

Over: CREEK

FRESHWATER, Hoonah-Angoon, AK

Built 1982 Load: 19.8 t ADT: 10

ROAD

Fair

Over: STREAM -1977

EIGHT FATHOM BIGHT, Hoonah-Angoon, AK

Built 1990 Load: 19.8 t

ROAD

Fair

Over: STREAM -1990

EIGHT FATHOM BIGHT, Hoonah-Angoon, AK

Built 1990 Load: 19.8 t

ROAD

Fair

Over: MUD BAY FORK

EIGHT FATHOM BIGHT, Hoonah-Angoon, AK

Built 1977 Load: 19.8 t

STRUCTURE

Fair

Over: NO ACCESS TO THIS

SALT LAKE BAY, Hoonah-Angoon, AK

Built 1982 Load: 19.8 t

ROAD

Fair

Over: NO DATA ENTERED

SALT LAKE BAY, Hoonah-Angoon, AK

Built 1982 Load: 19.8 t

NO DATA ENTERED

Fair

Over: STREAM

SALT LAKE BAY, Hoonah-Angoon, AK

Built 1980 Load: 19.8 t

ROAD

Fair

Over: STREAM

SALT LAKE BAY, Hoonah-Angoon, AK

Built 1980 Load: 19.8 t

ROAD

Fair

Over: STREAM

SALT LAKE BAY, Hoonah-Angoon, AK

Built 1980 Load: 19.8 t

NO DATA ENTERED

Fair

Over: NO DATA ENTERED

IYOUKTUG, Hoonah-Angoon, AK

Built 1995 Load: 19.8 t

LOGGING ROAD

Fair

Over: CREEK

FRESHWATER, Hoonah-Angoon, AK

Built 1982 Load: 19.8 t ADT: 10

LOGGING ROAD

Fair

Over: STREAM

FRESHWATER, Hoonah-Angoon, AK

Built 1982 Load: 19.8 t ADT: 10

LOGGING ROAD

Fair

Over: NO DATA ENTERED

GAME CREEK, Hoonah-Angoon, AK

Built 1981 Load: 19.8 t ADT: 10

LOGGING ROAD

Fair

Over: CREEK

GAME CREEK, Hoonah-Angoon, AK

Built 1994 Load: 19.8 t ADT: 50

ROAD

Fair

Over: GARTINA CREEK

HOONAH - LONG ISLAND, Hoonah-Angoon, AK

Built 1990 Load: 19.8 t ADT: 50

NO DATA ENTERED

Fair

Over: NO DATA ENTERED

FRESHWATER, Hoonah-Angoon, AK

Built 1995 Load: 19.8 t ADT: 10

NO DATA ENTERED

Fair

Over: NO DATA ENTERED

IYOUKTUG, Hoonah-Angoon, AK

Built 1982 Load: 19.8 t

NO DATA ENTERED

Fair

Over: NO DATA ENTERED

SHELTER, Ketchikan Gateway, AK

Built 1980 Load: 19.8 t

LOGGING ROAD

Fair

Over: STREAM

TONKA, Petersburg, AK

Built 1979 Load: 19.8 t ADT: 10

LOGGING ROAD

Fair

Over: STREAM

KUPREANOF ISLAND AT KAKE, Petersburg, AK

Built 1979 Load: 19.8 t ADT: 10

LOGGING ROAD

Fair

Over: STREAM

KUPREANOF ISLAND, PORTAGE, Petersburg, AK

Built 1990 Load: 19.8 t

LOGGING ROAD

Fair

Over: STREAM

KUIU ISLAND, Petersburg, AK

Built 1987 Load: 19.8 t ADT: 5

LOGGING ROAD

Fair

Over: STREAM

KUIU ISLAND, Petersburg, AK

Built 1982 Load: 19.8 t

LOGGING ROAD

Fair

Over: STREAM

KUPREANOF ISLAND, PORTAGE, Petersburg, AK

Built 1990 Load: 19.8 t

LOGGING ROAD

Fair

Over: STREAM

KUIU ISLAND, Petersburg, AK

Built 1982 Load: 19.8 t

LOGGING ROAD

Fair

Over: STREAM

KUIU ISLAND, Petersburg, AK

Built 1991 Load: 19.8 t

ROAD

Fair

Over: STREAM

KUPREANOF ISLAND, PORTAGE, Petersburg, AK

Built 1981 Load: 19.8 t

Showing 51-100 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.