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: SITKOH RIVER

FALSE ISLAND, Sitka City and, AK

Built 1982 Load: 46.7 t

FDR 6270

Good

Over: STREAM -PERM

WRANGELL ISLAND, Wrangell City and, AK

Built 1982 Load: 46.7 t ADT: 10

SEWARD HIGHWAY

Good

Over: CANYON CREEK

MILE POINT 55.8, Kenai Peninsula, AK

Built 1997 Load: 47.0 t ADT: 4,268

3000000-55.37

Good

Over: PERM

COFFMAN, Prince of Wales-Hyder, AK

Built 1983 Load: 47.0 t ADT: 50

LOGGING ROAD

Good

Over: STREAM

MITKOF ISLAND, Petersburg, AK

Built 1984 Load: 47.3 t ADT: 10

LOGGING ROAD

Good

Over: STREAM

TONKA, Petersburg, AK

Built 1990 Load: 47.3 t ADT: 5

3030000-12.71

Good

Over: PERM

COFFMAN, Prince of Wales-Hyder, AK

Built 1986 Load: 47.3 t ADT: 50

PORCUPINE ROAD

Good

Over: GLACIER CREEK

MILE POINT 10.8, Haines, AK

Built 2023 Load: 47.4 t ADT: 10

LOGGING ROAD

Good

Over: STREAM

MITKOF ISLAND, Petersburg, AK

Built 1973 Load: 47.6 t ADT: 50

TOK CUTOFF

Good

Over: CARLSON CREEK

MILE POINT 66.7, Copper River, AK

Built 1991 Load: 47.9 t ADT: 220

LOGGING ROAD

Good

Over: PAVLOV RIVER

FRESHWATER PAVLOV, Hoonah-Angoon, AK

Built 1986 Load: 48.0 t

LOGGING ROAD

Good

Over: STREAM

MITKOF ISLAND, Petersburg, AK

Built 1982 Load: 48.0 t ADT: 50

3030000-11.8

Good

Over: PERM

COFFMAN, Prince of Wales-Hyder, AK

Built 1986 Load: 48.0 t ADT: 50

LOGGING ROAD

Good

Over: STREAM

WRANGELL ISLAND, Wrangell City and, AK

Built 1988 Load: 48.0 t ADT: 50

ALASKA HIGHWAY

Good

Over: BEAR CREEK

MILE POINT 133.2, Southeast Fairbanks, AK

Built 1985 Load: 48.2 t ADT: 230

LOGGING ROAD

Good

Over: CREEK

SUNTAHEEN, Hoonah-Angoon, AK

Built 1994 Load: 48.9 t ADT: 10

PARKS HIGHWAY

Good

Over: LITTLE SUSITNA RIVER

MILE POINT 21.8, Matanuska-Susitna, AK

Built 2004 Load: 49.1 t ADT: 4,700

LOGGING ROAD

Good

Over: STREAM

SUNTAHEEN, Hoonah-Angoon, AK

Built 1994 Load: 49.2 t ADT: 10

8400000

Good

Over: PERM

SHOAL COVE, Ketchikan Gateway, AK

Built 1985 Load: 49.2 t ADT: 5

RICHARDSON HIGHWAY

Good

Over: ONE MILE CREEK

MILE POINT 187.5, Copper River, AK

Built 2000 Load: 49.4 t ADT: 330

LOGGING ROAD

Good

Over: FEATHER DUSTER CREEK

SUNTAHEEN, Hoonah-Angoon, AK

Built 1994 Load: 49.6 t ADT: 50

FDR 6585

Good

Over: STREAM - PERM

ZAREMBO ISLAND, Wrangell City and, AK

Built 1986 Load: 49.6 t

ELLIOTT HIGHWAY

Good

Over: BAKER CREEK

MILE POINT 130.5, Yukon-Koyukuk, AK

Built 1998 Load: 49.6 t ADT: 40

LOGGING ROAD

Good

Over: CREEK

SUNTAHEEN, Hoonah-Angoon, AK

Built 1994 Load: 49.9 t ADT: 50

LOGGING ROAD

Good

Over: FALSE CREEK

FALSE ISLAND, Sitka City and, AK

Built 1982 Load: 49.9 t

2000000-114.664

Good

Over: PERM 114.6640

LAB BAY, Prince of Wales-Hyder, AK

Built 1989 Load: 50.2 t ADT: 10

2000000-115.539

Good

Over: PERM 115.539

LAB BAY, Prince of Wales-Hyder, AK

Built 1987 Load: 50.2 t ADT: 10

2700000-2.65

Good

Over: PERM

WHALE PASS, Prince of Wales-Hyder, AK

Built 1986 Load: 50.2 t ADT: 50

SEWARD HIGHWAY

Good

Over: TRAIL RIVER

MILE POINT 25.1, Kenai Peninsula, AK

Built 2013 Load: 50.9 t ADT: 1,700

LOGGING ROAD

Good

Over: KENNEL CREEK

FRESHWATER KENNEL CREEK, Hoonah-Angoon, AK

Built 1986 Load: 51.2 t

2100000-1.95

Good

Over: PERM

12 MILE, Prince of Wales-Hyder, AK

Built 1985 Load: 51.2 t ADT: 10

2000000-3.269

Good

Over: PERM

NAUKATI, Prince of Wales-Hyder, AK

Built 1986 Load: 51.8 t ADT: 50

LOGGING ROAD

Good

Over: CREEK

FRESHWATER PAVLOV, Hoonah-Angoon, AK

Built 1986 Load: 52.5 t

3000000-78.345

Good

Over: PERM

WHALE PASS, Prince of Wales-Hyder, AK

Built 1986 Load: 52.5 t ADT: 50

FDR 6270

Good

Over: STREAM - PERM

WRANGELL ISLAND, Wrangell City and, AK

Built 1982 Load: 52.5 t ADT: 10

FDR 6270

Good

Over: STREAM - PERM

WRANGELL ISLAND, Wrangell City and, AK

Built 1982 Load: 52.5 t ADT: 10

ELLIOTT HIGHWAY

Good

Over: WASHINGTON CREEK

MILE POINT 17.2, Fairbanks North Star, AK

Built 2007 Load: 52.7 t ADT: 390

OLD GLENN, EAGLE R

Good

Over: PETERS CREEK

MILE POINT 7.4, Anchorage, AK

Built 2011 Load: 52.8 t ADT: 2,300

LOGGING ROAD

Good

Over: CREEK

FRESHWATER PAVLOV, Hoonah-Angoon, AK

Built 1986 Load: 53.1 t

LOGGING ROAD

Good

Over: STREAM

KUPREANOF ISLAND AT KAKE, Petersburg, AK

Built 2003 Load: 53.1 t ADT: 10

2000000-124.153

Good

Over: PERM 124.153

LAB BAY, Prince of Wales-Hyder, AK

Built 1987 Load: 53.5 t ADT: 10

FDR 6590

Good

Over: STREAM - PERM

ZAREMBO ISLAND, Wrangell City and, AK

Built 1992 Load: 53.8 t ADT: 5

GOLDSTREAM ROAD

Good

Over: O'CONNOR CREEK

MILE POINT 9.2, Fairbanks North Star, AK

Built 2013 Load: 54.4 t ADT: 1,520

LOGGING ROAD

Good

Over: STREAM

FRESHWATER WACHUSETT COVE, Hoonah-Angoon, AK

Built 1993 Load: 54.4 t

2000000-11.076

Good

Over: PERM

NAUKATI, Prince of Wales-Hyder, AK

Built 1986 Load: 54.4 t ADT: 50

FDR 6590

Good

Over: STREAM - PERM

ZAREMBO ISLAND, Wrangell City and, AK

Built 1992 Load: 54.4 t ADT: 5

TOK CUTOFF

Good

Over: SLANA RIVER

MILE POINT 74.3, Copper River, AK

Built 2017 Load: 55.1 t ADT: 220

LOGGING ROAD

Good

Over: STREAM

FRESHWATER PAVLOV, Hoonah-Angoon, AK

Built 1986 Load: 55.1 t

LOGGING ROAD

Good

Over: BEAVER POND

FRESHWATER, Hoonah-Angoon, AK

Built 2013 Load: 55.1 t ADT: 10

NO DATA ENTERED

Good

Over: NO DATA ENTERED

FRESHWATER, Hoonah-Angoon, AK

Built 2013 Load: 55.1 t ADT: 10

Showing 701-750 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.