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

ROAD

Fair

Over: STREAM

KUIU ISLAND, Petersburg, AK

Built 1979 Load: 19.8 t

NO DATA ENTERED

Fair

Over: NO DATA ENTERED

MITKOF ISLAND, Petersburg, AK

Built 1979 Load: 19.8 t ADT: 10

2052000

Fair

Over: NO DATA ENTERED

STANEY, Prince of Wales-Hyder, AK

Built 1977 Load: 19.8 t ADT: 10

2030790-0.03

Fair

Over: MOD

THORNE BAY, Prince of Wales-Hyder, AK

Built 1979 Load: 19.8 t ADT: 10

2050000

Fair

Over: PERM

STANEY, Prince of Wales-Hyder, AK

Built 1980 Load: 19.8 t ADT: 10

2054000-1.08

Fair

Over: MOD

STANEY, Prince of Wales-Hyder, AK

Built 1980 Load: 19.8 t ADT: 10

3000000-45.30

Fair

Over: PERM

RATZ, Prince of Wales-Hyder, AK

Built 1987 Load: 19.8 t ADT: 50

3000330-0.60

Fair

Over: MOD

RATZ, Prince of Wales-Hyder, AK

Built 1985 Load: 19.8 t

3000346-0.70

Fair

Over: MOD

RATZ, Prince of Wales-Hyder, AK

Built 1980 Load: 19.8 t

3015000-6.44

Fair

Over: MOD

THORNE BAY, Prince of Wales-Hyder, AK

Built 1981 Load: 19.8 t ADT: 5

NO DATA ENTERED

Fair

Over: MOD

CONTROL LAKE, Prince of Wales-Hyder, AK

Built 1980 Load: 19.8 t ADT: 5

3030700-3.61

Fair

Over: MOD

COFFMAN, Prince of Wales-Hyder, AK

Built 1980 Load: 19.8 t ADT: 5

NO DATA ENTERED

Fair

Over: NO DATA ENTERED

LANCASTER, Prince of Wales-Hyder, AK

Built 1989 Load: 19.8 t

LOGGING ROAD

Fair

Over: STREAM 1991

CORNER BAY, Sitka City and, AK

Built 1991 Load: 19.8 t

FDR 6539

Fair

Over: STREAM

ETOLIN ISLAND, Wrangell City and, AK

Built 1982 Load: 19.8 t

FDR 6540

Fair

Over: STREAM - HAMILTON 40R31

ETOLIN ISLAND, Wrangell City and, AK

Built 1982 Load: 19.8 t

FDR 6540

Fair

Over: STREAM - HAMILTON 80R23

ETOLIN ISLAND, Wrangell City and, AK

Built 1982 Load: 19.8 t

FDR 6540

Fair

Over: STREAM - HAMILTON 40R37

ETOLIN ISLAND, Wrangell City and, AK

Built 1982 Load: 19.8 t

FDR 6540

Fair

Over: STREAM - HAMILTON 30R21

ETOLIN ISLAND, Wrangell City and, AK

Built 1982 Load: 19.8 t

FDR 6540

Fair

Over: STREAM- HAMILTON 40R38

ETOLIN ISLAND, Wrangell City and, AK

Built 1983 Load: 19.8 t

FDR 6540

Fair

Over: STREAM- HAMILTON 30R22

ETOLIN ISLAND, Wrangell City and, AK

Built 1983 Load: 19.8 t

FDR 6545

Fair

Over: STREAM - HAMILTON 50R37

ETOLIN ISLAND, Wrangell City and, AK

Built 1983 Load: 19.8 t

FDR 6546

Fair

Over: STREAM

ETOLIN ISLAND, Wrangell City and, AK

Built 1982 Load: 19.8 t

FDR 6546

Fair

Over: STREAM

ETOLIN ISLAND, Wrangell City and, AK

Built 1982 Load: 19.8 t

LOGGING ROAD

Fair

Over: NO DATA ENTERED

ZAREMBO ISLAND, Wrangell City and, AK

Built 1977 Load: 19.8 t

VANDENBERG AVENUE

Fair

Over: SHIP CREEK

Approximately 0.25 miles, Anchorage, AK

Built 1968 Load: 20.0 t ADT: 10,000

IRR BIA RTE 1026

Fair

Over: BIG CREEK

2.5 Mi. SE OF PORT GRAHAM, Kenai Peninsula, AK

Built 1995 Load: 20.0 t ADT: 10

IRR BIA RTE 8PGH

Fair

Over: DOG SALMON CREEK

13.3 MI EAST OF PORT GRAH, Kenai Peninsula, AK

Built 1997 Load: 20.0 t ADT: 10

DENALI PARK ROAD

Fair

Over: EAST FORK TOKLAT RIVER

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

Built 1955 Load: 20.0 t ADT: 300

ROAD

Fair

Over: STREAM -1990

EIGHT FATHOM BIGHT, Hoonah-Angoon, AK

Built 1990 Load: 20.1 t

8000000-21.711

Fair

Over: MOD

MARGARET, Ketchikan Gateway, AK

Built 1992 Load: 20.1 t

8040000

Fair

Over: MOD

MARGARET, Ketchikan Gateway, AK

Built 1989 Load: 20.1 t

8340000

Fair

Over: MOD

SHELTER, Ketchikan Gateway, AK

Built 1993 Load: 20.1 t

1080840-1.44

Fair

Over: NO DATA ENTERED

SUEMEZ, Prince of Wales-Hyder, AK

Built 1992 Load: 20.1 t

3018200

Fair

Over: MOD

THORNE BAY, Prince of Wales-Hyder, AK

Built 1991 Load: 20.1 t ADT: 10

2083-3.486

Fair

Over: MOD

LAB BAY, Prince of Wales-Hyder, AK

Built 1991 Load: 20.1 t

ROAD

Fair

Over: STREAM -1977

EIGHT FATHOM BIGHT, Hoonah-Angoon, AK

Built 1977 Load: 20.4 t

ROAD

Fair

Over: STREAM -1990

EIGHT FATHOM BIGHT, Hoonah-Angoon, AK

Built 1979 Load: 20.4 t

LOGGING ROAD

Fair

Over: MUD RIVER

EIGHT FATHOM BIGHT, Hoonah-Angoon, AK

Built 1992 Load: 20.4 t

2083000-1.13

Fair

Over: NO DATA ENTERED

LAB BAY, Prince of Wales-Hyder, AK

Built 1991 Load: 20.4 t

3017000

Fair

Over: MOD

THORNE BAY, Prince of Wales-Hyder, AK

Built 1991 Load: 20.4 t

IRR BIA RTE 8PGH

Fair

Over: BIG CREEK

6.5 MI SE OF PORT GRAHAM,, Kenai Peninsula, AK

Built 1996 Load: 20.9 t ADT: 10

IRR BIA ROUTE 008

Fair

Over: UNNAMED STREAM

S OF KLAWOCK LAKE, 3.7 MI, Prince of Wales-Hyder, AK

Built 1990 Load: 20.9 t ADT: 1

RICHARDSON HIGHWAY

Fair

Over: FLOOD CREEK

MILE POINT 223.9, Southeast Fairbanks, AK

Built 1954 Load: 21.2 t ADT: 280

RICHARDSON HIGHWAY

Fair

Over: BOULDER CREEK

MILE POINT 226.5, Southeast Fairbanks, AK

Built 1954 Load: 21.2 t ADT: 280

8040000

Fair

Over: MOD

MARGARET, Ketchikan Gateway, AK

Built 1989 Load: 21.4 t

IRR BIA RTE 1

Fair

Over: TENT CREEK

10.5 KM SE OF METLAKATLA, Prince of Wales-Hyder, AK

Built 1993 Load: 21.4 t ADT: 35

NABESNA ROAD

Fair

Over: SLANA RIVER

MILE POINT 1.5, Copper River, AK

Built 1968 Load: 21.7 t ADT: 130

8340000

Fair

Over: MOD

SHELTER, Ketchikan Gateway, AK

Built 1990 Load: 21.7 t

ILLINOIS/CUSHMAN

Fair

Over: CHENA RIVER (CUSHMAN)

MILE POINT 3.3, Fairbanks North Star, AK

Built 1960 Load: 21.8 t ADT: 7,390

Showing 101-150 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.