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: LITTLE CREEK

LAB BAY, Prince of Wales-Hyder, AK

Built 2014 Load: 36.3 t ADT: 10

DENALI PARK ROAD

Good

Over: MOOSE CREEK

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

Built 1986 Load: 36.3 t ADT: 100

TOK CUTOFF

Good

Over: PORCUPINE CREEK

MILE POINT 63.0, Copper River, AK

Built 1982 Load: 36.4 t ADT: 220

IRR BIA RTE 28

Good

Over: UNNAMED STREAM

1.8KM DOWN FS6328 FM 6014, Prince of Wales-Hyder, AK

Built 1990 Load: 36.4 t ADT: 1

8000030

Good

Over: PERM

WARD LAKE, Ketchikan Gateway, AK

Built 1991 Load: 36.6 t ADT: 50

ALASKA HIGHWAY

Good

Over: CATHEDRAL RAPIDS NO 1

MILE POINT 114.1, Southeast Fairbanks, AK

Built 1985 Load: 36.8 t ADT: 230

PARKS HIGHWAY

Good

Over: MONDEROSA OVERHEAD

MILE POINT 273.1, Yukon-Koyukuk, AK

Built 2003 Load: 36.9 t ADT: 1,570

FROSTY ROAD

Good

Over: FROSTY CREEK

FROSTY ROAD SW COLD BAY, Aleutians East, AK

Built 1999 Load: 37.2 t ADT: 10

ALASKA HIGHWAY

Good

Over: CATHEDRAL RAPIDS NO 2

MILE POINT 114.6, Southeast Fairbanks, AK

Built 1985 Load: 37.3 t ADT: 230

IRR BIA RTE 28

Good

Over: UNNAMED STREAM

11.8KM DOWN FS 6328, Prince of Wales-Hyder, AK

Built 1990 Load: 37.4 t ADT: 5

ROAD

Good

Over: N FORK FRESHWARTER CREEK

FRESHWATER, Hoonah-Angoon, AK

Built 2018 Load: 37.9 t ADT: 10

SEWARD HIGHWAY

Good

Over: TIDEWATER SLOUGH

MILE POINT 89.6, Anchorage, AK

Built 1995 Load: 38.0 t ADT: 6,660

SUMMERS BAY ROAD

Good

Over: SUMMERS BAY CREEK

6.4 KM NORTH OF UNALASKA, Aleutians West, AK

Built 2014 Load: 38.1 t ADT: 20

NO DATA ENTERED

Good

Over: STREAM

JUNEAU, Juneau City and, AK

Built 2019 Load: 38.2 t ADT: 50

LOGGING ROAD

Good

Over: STREAM

KUPREANOF ISLAND AT KAKE, Petersburg, AK

Built 1983 Load: 38.2 t ADT: 10

FISHHOOK/PALMER RD

Good

Over: LITTLE SUSITNA RIVER

MILE POINT 8.5, Matanuska-Susitna, AK

Built 1991 Load: 38.5 t ADT: 1,030

LOGGING ROAD

Good

Over: STREAM

FRESHWATER WACHUSETT COVE, Hoonah-Angoon, AK

Built 1993 Load: 38.9 t

LOGGING ROAD

Good

Over: STREAM

TONKA, Petersburg, AK

Built 1990 Load: 38.9 t ADT: 5

BIA RT 0007

Good

Over: BENNET CREEK

2.4 MILES NE METLAKATLA, Prince of Wales-Hyder, AK

Built 2007 Load: 39.2 t ADT: 75

2000000-6.162

Good

Over: PERM

NAUKATI, Prince of Wales-Hyder, AK

Built 1990 Load: 39.2 t ADT: 50

25-0.296

Good

Over: PERM

WHALE PASS, Prince of Wales-Hyder, AK

Built 1996 Load: 39.2 t ADT: 50

IRR:BETHEL HIGHWAY

Good

Over: BROWNS SLOUGH

MILE POINT 0.0, Bethel, AK

Built 1996 Load: 39.6 t ADT: 2,380

TWIN LAKES DRIVE

Good

Over: SALMON CREEK

MILE POINT 1.6, Juneau City and, AK

Built 1989 Load: 39.6 t ADT: 2,450

LOGGING ROAD

Good

Over: STREAM

MITKOF ISLAND, Petersburg, AK

Built 2017 Load: 39.9 t ADT: 50

LOGGING ROAD

Good

Over: STREAM

KUIU ISLAND, Petersburg, AK

Built 1991 Load: 40.2 t

SEWARD HIGHWAY

Good

Over: PETERSON CREEK

MILE POINT 83.4, Anchorage, AK

Built 2019 Load: 40.4 t ADT: 4,276

SEWARD HIGHWAY

Good

Over: GLACIER CREEK

MILEPOINT 89.1, Anchorage, AK

Built 2019 Load: 40.4 t ADT: 4,276

C STREET

Good

Over: CAMPBELL CREEK, C STREET

MILE POINT 6.1, Anchorage, AK

Built 2003 Load: 40.4 t ADT: 12,600

RICHARDSON HIGHWAY

Good

Over: LOWE RIVER UPPER CROSS

MILE POINT 20.3, Chugach, AK

Built 1985 Load: 40.4 t ADT: 810

RICHARDSON HIGHWAY

Good

Over: PHELAN CREEK

MILE POINT 204.3, Copper River, AK

Built 2014 Load: 40.4 t ADT: 280

TOK CUTOFF

Good

Over: GAKONA RIVER

MILE POINT 1.8, Copper River, AK

Built 2010 Load: 40.4 t ADT: 410

TOK CUTOFF

Good

Over: TULSONA CREEK

MILE POINT 17.6, Copper River, AK

Built 2016 Load: 40.4 t ADT: 330

PARKS HIGHWAY

Good

Over: RILEY CREEK

MILE POINT 201.6, Denali, AK

Built 2015 Load: 40.4 t ADT: 1,680

HAINES HIGHWAY

Good

Over: MUNCASTER CREEK

MILE POINT 28.3, Haines, AK

Built 1999 Load: 40.4 t ADT: 160

GLACIER HIGHWAY

Good

Over: MENDENHALL RIVER

MILE POINT 9.3, Juneau City and, AK

Built 2015 Load: 40.4 t ADT: 15,923

SEWARD HIGHWAY

Good

Over: RESURRECTION RIVER NO 3

MILE POINT 3.1, Kenai Peninsula, AK

Built 2003 Load: 40.4 t ADT: 6,840

MITKOF HIGHWAY

Good

Over: OHMER CREEK

MILE POINT 20.2, Petersburg, AK

Built 2007 Load: 40.4 t ADT: 80

MITKOF HIGHWAY

Good

Over: TWIN CREEK

MILE POINT 6.6, Petersburg, AK

Built 1996 Load: 40.4 t ADT: 760

HYDABURG HIGHWAY

Good

Over: UNNAMED CREEK @ STA 287

MILE POINT 3.6, Prince of Wales-Hyder, AK

Built 1985 Load: 40.4 t ADT: 80

HYDABURG HIGHWAY

Good

Over: UNNAMED CREEK @ STA 374

MILE POINT 5.2, Prince of Wales-Hyder, AK

Built 1985 Load: 40.4 t ADT: 80

SAWMILL CR ROAD

Good

Over: INDIAN RIVER

MILE POINT 0.6, Sitka City and, AK

Built 2007 Load: 40.4 t ADT: 7,870

RICHARDSON HIGHWAY

Good

Over: JARVIS CREEK

MILE POINT 267.6, Southeast Fairbanks, AK

Built 2015 Load: 40.4 t ADT: 1,880

LOGGING ROAD

Good

Over: CREEK

GAME CREEK, Hoonah-Angoon, AK

Built 2020 Load: 40.5 t ADT: 50

OLD STERLING HWY

Good

Over: ANCHOR RIVER

MILE POINT 8.4, Kenai Peninsula, AK

Built 2021 Load: 40.5 t ADT: 1,380

8400000

Good

Over: PERM

SHOAL COVE, Ketchikan Gateway, AK

Built 1987 Load: 40.5 t ADT: 5

BACK LOOP RD

Good

Over: MONTANA CREEK

MILE POINT 4.5, Juneau City and, AK

Built 1985 Load: 40.6 t ADT: 2,770

IRR:CHICKALOON FRK

Good

Over: CHICKALOON RIVER NO. 2

MILE POINT 1.1, Matanuska-Susitna, AK

Built 1982 Load: 40.7 t ADT: 40

IRR:AIRPORT ROAD

Good

Over: HOONAH FERRY TERMINAL

HOONAH, Hoonah-Angoon, AK

Built 2011 Load: 40.8 t ADT: 45

NO DATA ENTERED

Good

Over: SUNTAHEEN CREEK

SUNTAHEEN, Hoonah-Angoon, AK

Built 1987 Load: 40.8 t

BIA RT 0007

Good

Over: JAPAN II CREEK

3.2 MILES N OF METLAKATLA, Prince of Wales-Hyder, AK

Built 2007 Load: 40.8 t ADT: 75

Showing 601-650 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.