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

NO DATA ENTERED

Good

Over: NO DATA ENTERED

THORNE BAY, Prince of Wales-Hyder, AK

Built 2013 Load: 70.3 t ADT: 10

LOGGING ROAD

Good

Over: STREAM

GAME CREEK, Hoonah-Angoon, AK

Built 2013 Load: 70.6 t ADT: 10

NO DATA ENTERED

Good

Over: END OF THE LINE CREEK

SHOAL COVE, Ketchikan Gateway, AK

Built 2011 Load: 70.6 t ADT: 3

NO DATA ENTERED

Good

Over: LICKING CREEK

SHOAL COVE, Ketchikan Gateway, AK

Built 2011 Load: 70.6 t ADT: 5

8400000

Good

Over: NO DATA ENTERED

SHOAL COVE, Ketchikan Gateway, AK

Built 2010 Load: 70.6 t ADT: 5

840000

Good

Over: NO DATA ENTERED

SHOAL COVE, Ketchikan Gateway, AK

Built 2010 Load: 70.6 t ADT: 5

2024300-1.984

Good

Over: NO DATA ENTERED

HOLLIS, Prince of Wales-Hyder, AK

Built 2004 Load: 70.6 t ADT: 5

NO DATA ENTERED

Good

Over: CREEK

FALSE ISLAND, Sitka City and, AK

Built 2014 Load: 70.6 t

NO DATA ENTERED

Good

Over: NO DATA ENTERED

KUIU ISLAND, Wrangell City and, AK

Built 2014 Load: 70.6 t ADT: 5

NO DATA ENTERED

Good

Over: NO DATA ENTERED

STANEY, Prince of Wales-Hyder, AK

Built 2012 Load: 72.6 t ADT: 10

RICHARDSON HIGHWAY

Good

Over: BOULDER CREEK

MILE POINT 55.5, Copper River, AK

Built 1974 Load: 80.6 t ADT: 440

DALTON HIGHWAY

Good

Over: FISH CREEK

MILE POINT 113.8, Yukon-Koyukuk, AK

Built 1972 Load: 87.8 t ADT: 140

BIA RT 0007

Good

Over: NICHOLS CREEK

7.6 MI N OF METLAKATLA, Prince of Wales-Hyder, AK

Built 2005 Load: 89.8 t ADT: 75

BIA RT 0007

Good

Over: COWBOY CREEK

8.3 MI N OF METLAKATLA, Prince of Wales-Hyder, AK

Built 2006 Load: 89.8 t ADT: 75

SEWARD HIGHWAY

Good

Over: QUARTZ CREEK

MILE POINT 41.9, Kenai Peninsula, AK

Built 1983 Load: 99.9 t ADT: 3,430

DALTON HIGHWAY

Good

Over: HAPPY VALLEY CREEK

MILE POINT 334.7, North Slope, AK

Built 1995 Load: 99.9 t ADT: 90

DANGEROUS RIVER RD

Good

Over: MILLER CREEK EAST

MILE POINT 26.7, Yakutat City and, AK

Built 1976 Load: 99.9 t ADT: 40

IRR BIA RTE 735

Poor

Over: SUKKWAN STRAIT

3.0 MILES EAST OF HYDABUR, Prince of Wales-Hyder, AK

Built 1970 ADT: 5

SECTION LINE RD

Poor

Over: LITTLE CHENA RIVER

MILE POINT 10.2, Fairbanks North Star, AK

Built 1980 Load: 1.6 t ADT: 20

IRR BIA RTE 461

Poor

Over: UNNAMED CREEK

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

Built 1980 Load: 5.4 t ADT: 10

MINERAL CREEK ROAD

Poor

Over: MINERAL CREEK

MILE POINT 0.3, Chugach, AK

Built 1970 Load: 5.7 t ADT: 75

ROAD

Poor

Over: STREAM

SALT LAKE BAY, Hoonah-Angoon, AK

Built 2002 Load: 7.5 t

NO DATA ENTERED

Poor

Over: MOD

MARGARET, Ketchikan Gateway, AK

Built 1989 Load: 8.1 t

HAPPY CREEK ROAD

Poor

Over: OTTER CREEK

MILE POINT 7.2, FLAT, Yukon-Koyukuk, AK

Built 1947 Load: 9.0 t ADT: 10

IRR: AIRFIELD RD

Poor

Over: GOLD CREEK

MILE POINT 1.1, Yukon-Koyukuk, AK

Built 1972 Load: 9.4 t ADT: 86

STERLING L/OPHIR

Poor

Over: CALIFORNIA CREEK

MILE POINT 37.1, Yukon-Koyukuk, AK

Built 1937 Load: 11.6 t ADT: 45

IRR BIA ROUTE 008

Poor

Over: UNNAMED CREEK

S OF KLAWOCK LAKE, 4.3 MI, Prince of Wales-Hyder, AK

Built 2005 Load: 12.7 t ADT: 1

ROAD

Poor

Over: STREAM

SALT LAKE BAY, Hoonah-Angoon, AK

Built 2002 Load: 13.9 t

ROAD

Poor

Over: STREAM

SALT LAKE BAY, Hoonah-Angoon, AK

Built 2003 Load: 17.2 t

2050000

Poor

Over: MOD

SHAHEEN, Prince of Wales-Hyder, AK

Built 1991 Load: 17.8 t

ROAD

Poor

Over: STREAM

SALT LAKE BAY, Hoonah-Angoon, AK

Built 2002 Load: 19.4 t

LOGGING ROAD

Poor

Over: STREAM

SALT LAKE BAY, Hoonah-Angoon, AK

Built 1975 Load: 19.8 t

NO DATA ENTERED

Poor

Over: STREAM

SALT LAKE BAY, Hoonah-Angoon, AK

Built 1980 Load: 19.8 t

LOGGING ROAD

Poor

Over: FRESHWATER CREEK

FRESHWATER, Hoonah-Angoon, AK

Built 1982 Load: 19.8 t

8400000

Poor

Over: TRAIL # 828400SHOAL

SHOAL COVE, Ketchikan Gateway, AK

Built 1992 Load: 19.8 t ADT: 5

LOGGING ROAD

Poor

Over: STREAM

KUPREANOF ISLAND, PORTAGE, Petersburg, AK

Built 1981 Load: 19.8 t

LOGGING ROAD

Poor

Over: STREAM

KUPREANOF ISLAND, PORTAGE, Petersburg, AK

Built 1981 Load: 19.8 t

2160000

Poor

Over: MOD

LANCASTER, Prince of Wales-Hyder, AK

Built 1990 Load: 19.8 t

3013000-1.06

Poor

Over: MOD

CONTROL LAKE, Prince of Wales-Hyder, AK

Built 1977 Load: 19.8 t ADT: 5

FDR 6540

Poor

Over: STREAM - HAMILTON 50R36

ETOLIN ISLAND, Wrangell City and, AK

Built 1983 Load: 19.8 t

FDR 6590

Poor

Over: STREAM - MOD

ZAREMBO ISLAND, Wrangell City and, AK

Built 1980 Load: 19.8 t ADT: 5

PUBLIC ROAD

Poor

Over: W.F. SITUK

W.F. SITUK ROAD, Yakutat City and, AK

Built 1985 Load: 19.8 t

3065000-2.349

Poor

Over: MOD

WHALE PASS, Prince of Wales-Hyder, AK

Built 1991 Load: 20.4 t

LOGGING ROAD

Poor

Over: NO DATA ENTERED

ZAREMBO ISLAND, Wrangell City and, AK

Built 1991 Load: 20.4 t

DENALI HIGHWAY

Poor

Over: SUSITNA RIVER

MILE POINT 79.5, Matanuska-Susitna, AK

Built 1956 Load: 21.1 t ADT: 60

IRR:STEESE HIGHWAY

Poor

Over: CROOKED CREEK

MILE POINT 122.3, Yukon-Koyukuk, AK

Built 1957 Load: 21.3 t ADT: 110

STERLING HIGHWAY

Poor

Over: SOUTH FORK ANCHOR RIVER

MILE POINT 120.7, Kenai Peninsula, AK

Built 1959 Load: 21.5 t ADT: 3,490

ROAD

Poor

Over: STREAM

SALT LAKE BAY, Hoonah-Angoon, AK

Built 2002 Load: 22.0 t

RICHARDSON HIGHWAY

Poor

Over: BEAR CREEK

MILE POINT 236.1, Southeast Fairbanks, AK

Built 1952 Load: 22.3 t ADT: 240

IRR BIA RTE 8PGH

Poor

Over: UNNAMED CREEK

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

Built 1997 Load: 22.7 t ADT: 10

Showing 801-850 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.