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

LOGGING ROAD

Good

Over: STREAM

MITKOF ISLAND, Petersburg, AK

Built 1987 Load: 16.2 t ADT: 30

LOGGING ROAD

Good

Over: STREAM

MITKOF ISLAND, Petersburg, AK

Built 1987 Load: 16.2 t ADT: 30

LOGGING ROAD

Good

Over: STREAM

KUIU ISLAND, Petersburg, AK

Built 1985 Load: 16.2 t ADT: 5

LOGGING ROAD

Good

Over: STREAM

KUIU ISLAND, Petersburg, AK

Built 1984 Load: 16.2 t ADT: 5

LOGGING ROAD

Good

Over: STREAM

KUIU ISLAND, Petersburg, AK

Built 1985 Load: 16.2 t ADT: 5

LOGGING ROAD

Good

Over: UPPER KOOK CREEK NORTH

CORNER BAY, Sitka City and, AK

Built 1984 Load: 16.2 t

LOGGING ROAD

Good

Over: KOOK CREEK

CORNER BAY, Sitka City and, AK

Built 1984 Load: 16.2 t

3015200-2.40

Good

Over: STREAM

THORNE BAY, Prince of Wales-Hyder, AK

Built 1990 Load: 17.8 t ADT: 5

LOGGING ROAD

Good

Over: STREAM

SALT LAKE BAY, Hoonah-Angoon, AK

Built 1990 Load: 19.8 t

NO DATA ENTERED

Good

Over: NO DATA ENTERED

IYOUKTUG, Hoonah-Angoon, AK

Built 1990 Load: 19.8 t

ROAD

Good

Over: STREAM - 1990

EIGHT FATHOM BIGHT, Hoonah-Angoon, AK

Built 1990 Load: 19.8 t

NO DATA ENTERED

Good

Over: STREAM

FRESHWATER PAVLOV, Hoonah-Angoon, AK

Built 1983 Load: 19.8 t

LOGGING ROAD

Good

Over: STREAM

KUPREANOF ISLAND, PORTAGE, Petersburg, AK

Built 1990 Load: 19.8 t

NO DATA ENTERED

Good

Over: STREAM

MITKOF ISLAND, Petersburg, AK

Built 1990 Load: 19.8 t ADT: 10

ROAD

Good

Over: STREAM

MITKOF ISLAND, Petersburg, AK

Built 1985 Load: 19.8 t ADT: 10

ROAD

Good

Over: STREAM

MITKOF ISLAND, Petersburg, AK

Built 1990 Load: 19.8 t ADT: 10

2900000

Good

Over: MOD 29-3.947

CALDER, Prince of Wales-Hyder, AK

Built 1989 Load: 19.8 t

3030100-1.04

Good

Over: PERM

RATZ, Prince of Wales-Hyder, AK

Built 1987 Load: 19.8 t ADT: 10

2160000

Good

Over: NO DATA ENTERED

LANCASTER, Prince of Wales-Hyder, AK

Built 2006 Load: 19.8 t

LOGGING ROAD

Good

Over: NO DATA ENTERED

FRESHWATER KENNEL CREEK, Sitka City and, AK

Built 1982 Load: 19.8 t

NO DATA ENTERED

Good

Over: MOD

ZAREMBO ISLAND, Wrangell City and, AK

Built 1983 Load: 19.8 t

2120000-9.27

Good

Over: MOD

12 MILE, Prince of Wales-Hyder, AK

Built 1991 Load: 20.1 t

2058000-1.75

Good

Over: MOD

NAUKATI, Prince of Wales-Hyder, AK

Built 1990 Load: 20.1 t ADT: 20

2050300

Good

Over: PERM 2050300-3.14

STANEY, Prince of Wales-Hyder, AK

Built 1991 Load: 20.1 t ADT: 10

LOGGING ROAD

Good

Over: STREAM

EIGHT FATHOM BIGHT, Hoonah-Angoon, AK

Built 1992 Load: 20.4 t

LOGGING ROAD

Good

Over: MUD RIVER

EIGHT FATHOM BIGHT, Hoonah-Angoon, AK

Built 1992 Load: 20.4 t

NO DATA ENTERED

Good

Over: NO DATA ENTERED

FRESHWATER PAVLOV, Hoonah-Angoon, AK

Built 1991 Load: 20.4 t

IRR BIA RTE 2800

Good

Over: DAHL CREEK

12.2KM NORTHEAST OF KOBUK, Northwest Arctic, AK

Built 2010 Load: 20.4 t ADT: 5

LOGGING ROAD

Good

Over: STREAM

KUIU ISLAND, Petersburg, AK

Built 1991 Load: 20.4 t ADT: 5

IRR:NOME-TAYLOR RD

Good

Over: GRAND CENTRAL RIVER

MILE POINT 36.1, Nome, AK

Built 1982 Load: 20.9 t ADT: 249

IRR BIA RTE 1017

Good

Over: UNNAMED CREEK

0.41 MI NORTH OF BIG SALT, Prince of Wales-Hyder, AK

Built 2020 Load: 20.9 t ADT: 30

3015200-0.525

Good

Over: STREAM

THORNE BAY, Prince of Wales-Hyder, AK

Built 1980 Load: 22.4 t ADT: 5

NO DATA ENTERED

Good

Over: NO DATA ENTERED

COFFMAN, Prince of Wales-Hyder, AK

Built 2018 Load: 22.4 t ADT: 50

NO DATA ENTERED

Good

Over: NO DATA ENTERED

THORNE BAY, Prince of Wales-Hyder, AK

Built 2018 Load: 22.4 t ADT: 50

ROAD

Good

Over: TAWAH CREEK

CANNON BEACH ROAD, Yakutat City and, AK

Built 1985 Load: 22.4 t

VANDENBERG AVE

Good

Over: ALASKA RAILROAD

0.1 miles south of inters, Anchorage, AK

Built 2002 Load: 22.7 t ADT: 10,000

NO DATA ENTERED

Good

Over: PERM

SHOAL COVE, Ketchikan Gateway, AK

Built 2003 Load: 22.7 t ADT: 5

IRR BIA RTE 1008

Good

Over: KLAWOCK SLOUGH

0.21 MI W OF CRG/KLWK HW, Prince of Wales-Hyder, AK

Built 2015 Load: 22.7 t ADT: 60

SALTRY POINT ROAD

Good

Over: UNNAMED CREEK

1.2 MILES EAST ON CEDAR S, Prince of Wales-Hyder, AK

Built 1995 Load: 22.8 t ADT: 20

91 MILE LOOP

Good

Over: LITTLE TOK OVERFLOW

OLD TOK ALIGNMENT MP 0.6, Copper River, AK

Built 1954 Load: 23.3 t ADT: 30

LOGGING ROAD

Good

Over: STREAM

GAME CREEK, Hoonah-Angoon, AK

Built 1991 Load: 23.7 t

LOGGING ROAD

Good

Over: NO DATA ENTERED

KUIU ISLAND, Petersburg, AK

Built 1994 Load: 23.7 t

6590

Good

Over: NO DATA ENTERED

ZAREMBO ISLAND, Wrangell City and, AK

Built 1983 Load: 23.7 t

IRR:NOME-TAYLOR RD

Good

Over: PILGRIM RIVER

MILE POINT 60.6, Nome, AK

Built 1982 Load: 24.9 t ADT: 50

SOUTH TONGASS HWY

Good

Over: FRONT AND MILL ST VIAD

MILE POINT 2.1, Ketchikan Gateway, AK

Built 1973 Load: 25.4 t ADT: 6,830

IRR BIA RTE UNKNOW

Good

Over: IRR BIA ROUTE UNKNOWN

APPROXIMATELY 0.1 MILES (, Haines, AK

Built 1998 Load: 25.9 t ADT: 10

2140000-1.21

Good

Over: PERM

POLK, Prince of Wales-Hyder, AK

Built 1985 Load: 26.6 t

NO DATA ENTERED

Good

Over: MILK CREEK

CROW PASS ROAD, Anchorage, AK

Built 1980 Load: 26.9 t ADT: 10

AIRPORT/MINNESOTA

Good

Over: MINNESOTA DR OVERHEAD

MILE POINT 4.9, Anchorage, AK

Built 1993 Load: 27.7 t ADT: 31,600

0000

Good

Over: IRR ROUTE 1017

0.39 MI NORTH OF BIG SALT, Prince of Wales-Hyder, AK

Built 2020 Load: 28.1 t ADT: 30

Showing 451-500 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.