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

KUPREANOF ISLAND, PORTAGE, Petersburg, AK

Built 1997 Load: 32.7 t

LOGGING ROAD

Good

Over: STREAM

KUPREANOF ISLAND AT KAKE, Petersburg, AK

Built 1996 Load: 32.7 t

LOGGING ROAD

Good

Over: STREAM

KUIU ISLAND, Petersburg, AK

Built 1977 Load: 32.7 t ADT: 5

6415

Good

Over: NO DATA ENTERED

KUIU ISLAND, Petersburg, AK

Built 2002 Load: 32.7 t ADT: 5

LOGGING ROAD

Good

Over: STREAM

KUPREANOF ISLAND AT KAKE, Petersburg, AK

Built 1998 Load: 32.7 t ADT: 10

LOGGING ROAD

Good

Over: STREAM

KUPREANOF ISLAND AT KAKE, Petersburg, AK

Built 1998 Load: 32.7 t ADT: 10

LOGGING ROAD

Good

Over: STREAM

KUPREANOF ISLAND AT KAKE, Petersburg, AK

Built 1998 Load: 32.7 t ADT: 10

LOGGING ROAD

Good

Over: STREAM

KUPREANOF ISLAND AT KAKE, Petersburg, AK

Built 1998 Load: 32.7 t

LOGGING ROAD

Good

Over: NO DATA ENTERED

TONKA, Petersburg, AK

Built 2003 Load: 32.7 t ADT: 10

NO DATA ENTERED

Good

Over: NO DATA ENTERED

KUPREANOF ISLAND AT KAKE, Petersburg, AK

Built 2003 Load: 32.7 t ADT: 10

NO DATA ENTERED

Good

Over: STREAM

MITKOF ISLAND, Petersburg, AK

Built 2000 Load: 32.7 t ADT: 10

ROAD

Good

Over: STREAM

KUPREANOF ISLAND, PORTAGE, Petersburg, AK

Built 1996 Load: 32.7 t

LOGGING ROAD

Good

Over: STREAM

KUIU ISLAND, Petersburg, AK

Built 1998 Load: 32.7 t

LOGGING ROAD

Good

Over: NO DATA ENTERED

KUIU ISLAND, Petersburg, AK

Built 2003 Load: 32.7 t

NO DATA ENTERED

Good

Over: NO DATA ENTERED

TONKA, Petersburg, AK

Built 2004 Load: 32.7 t ADT: 5

LOGGING ROAD

Good

Over: STREAM

KUPREANOF ISLAND AT KAKE, Petersburg, AK

Built 2003 Load: 32.7 t ADT: 10

NO DATA ENTERED

Good

Over: NO DATA ENTERED

MITKOF ISLAND, Petersburg, AK

Built 2010 Load: 32.7 t ADT: 50

2050000-23.878

Good

Over: NO DATA ENTERED

SHAHEEN, Prince of Wales-Hyder, AK

Built 1995 Load: 32.7 t

3013150-0.63

Good

Over: MOD

CONTROL LAKE, Prince of Wales-Hyder, AK

Built 1978 Load: 32.7 t ADT: 5

2050

Good

Over: PERM

SHAHEEN, Prince of Wales-Hyder, AK

Built 1998 Load: 32.7 t

NO DATA ENTERED

Good

Over: NO DATA ENTERED

LANCASTER, Prince of Wales-Hyder, AK

Built 2006 Load: 32.7 t

2100000-14.38

Good

Over: NO DATA ENTERED

POLK, Prince of Wales-Hyder, AK

Built 2005 Load: 32.7 t ADT: 10

2024300-1.067

Good

Over: NO DATA ENTERED

HOLLIS, Prince of Wales-Hyder, AK

Built 2007 Load: 32.7 t ADT: 5

2000300-1.352

Good

Over: NO DATA ENTERED

CONTROL LAKE, Prince of Wales-Hyder, AK

Built 2003 Load: 32.7 t ADT: 10

3015600-1.15

Good

Over: NO DATA ENTERED

THORNE BAY, Prince of Wales-Hyder, AK

Built 2003 Load: 32.7 t ADT: 5

NO DATA ENTERED

Good

Over: NO DATA ENTERED

WHALE PASS, Prince of Wales-Hyder, AK

Built 2011 Load: 32.7 t ADT: 50

NO DATA ENTERED

Good

Over: NO DATA ENTERED

WHALE PASS, Prince of Wales-Hyder, AK

Built 2011 Load: 32.7 t ADT: 50

NO DATA ENTERED

Good

Over: NO DATA ENTERED

WHALE PASS, Prince of Wales-Hyder, AK

Built 2011 Load: 32.7 t ADT: 10

NO DATA ENTERED

Good

Over: NO DATA ENTERED

WHALE PASS, Prince of Wales-Hyder, AK

Built 2011 Load: 32.7 t ADT: 10

LOGGING ROAD

Good

Over: N FORK WHITE ROCK CREEK

FALSE ISLAND, Sitka City and, AK

Built 1975 Load: 32.7 t

NO DATA ENTERED

Good

Over: NO DATA ENTERED

WRANGELL ISLAND, Wrangell City and, AK

Built 2004 Load: 32.7 t ADT: 10

NO DATA ENTERED

Good

Over: NO DATA ENTERED

ZAREMBO ISLAND, Wrangell City and, AK

Built 2004 Load: 32.7 t ADT: 5

NO DATA ENTERED

Good

Over: NO DATA ENTERED

ZAREMBO ISLAND, Wrangell City and, AK

Built 2004 Load: 32.7 t ADT: 5

LOGGING ROAD

Good

Over: SUNTAHEEN CREEK

SUNTAHEEN, Hoonah-Angoon, AK

Built 2018 Load: 33.0 t ADT: 10

3000000-80.894

Good

Over: PERM

WHALE PASS, Prince of Wales-Hyder, AK

Built 1986 Load: 33.4 t ADT: 50

SEWARD HIGHWAY

Good

Over: BEAR CREEK

MILE POINT 6.6, Kenai Peninsula, AK

Built 1979 Load: 33.5 t ADT: 3,510

DELTA-NISTLER ROAD

Good

Over: JARVIS CREEK OVERFLOW #2

MILE POINT 1.1, Southeast Fairbanks, AK

Built 1996 Load: 33.7 t ADT: 1,250

ARKANSAS RANGE RD

Good

Over: BRANCH DELTA RIVER

1.8 KM NE OF XBRIE2, Fairbanks North Star, AK

Built 2022 Load: 34.0 t ADT: 25

ARKANSAS RANGE RD

Good

Over: BRANCH OF DELTA RIVER

1.8 KM SW OF XBRIE, Fairbanks North Star, AK

Built 2022 Load: 34.0 t ADT: 25

FDR 6590

Good

Over: STREAM - PERM

ZAREMBO ISLAND, Wrangell City and, AK

Built 1988 Load: 34.0 t ADT: 5

COPPER RIVER HWY

Good

Over: COPPER DELTA

MILE POINT 35.6, Chugach, AK

Built 1977 Load: 34.3 t ADT: 40

2100000-5.07

Good

Over: PERM

12 MILE, Prince of Wales-Hyder, AK

Built 1985 Load: 34.3 t ADT: 10

IRR:NKNK-KNG SALMN

Good

Over: PAULS CREEK

MILE POINT 9.4, Bristol Bay, AK

Built 1960 Load: 34.9 t ADT: 520

3000000-79.776

Good

Over: PERM

WHALE PASS, Prince of Wales-Hyder, AK

Built 1986 Load: 35.0 t ADT: 50

BIA RT 0007

Good

Over: TAIN CREEK

WALDEN POINT RD, Prince of Wales-Hyder, AK

Built 2007 Load: 35.1 t ADT: 75

OLD GLACIER HWY

Good

Over: LEMON CREEK

MILE POINT 2.3, Juneau City and, AK

Built 1982 Load: 35.3 t ADT: 6,520

BRODY LANE

Good

Over: NINILCHIK RIV BRODY LN

MILE POINT 0.5, Kenai Peninsula, AK

Built 2003 Load: 35.7 t ADT: 50

STEESE HIGHWAY

Good

Over: SOURDOUGH CREEK

MILE POINT 62.8, Fairbanks North Star, AK

Built 1983 Load: 35.8 t ADT: 120

BIA RT 0007

Good

Over: CHESTER CREEK

WALDEN PT RD, Prince of Wales-Hyder, AK

Built 2006 Load: 36.0 t ADT: 75

RIVER ROAD

Good

Over: CHENA RIVER

INT OF GAFFNEY RD, Fairbanks North Star, AK

Built 1988 Load: 36.2 t ADT: 1,500

Showing 551-600 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.