State profile · Near median Poor share

Alaska bridge safety

According to the Federal Highway Administration's 2024 National Bridge Inventory, condition ratings, load ratings, and Poor-condition shares for every public highway bridge in Alaska.

1,685
Public bridges
45.6%
Good condition
7.9%
Poor condition

Alaska holds 1,685 public highway bridges (#48 of 52 by inventory) with a 7.89% Poor share (#16 of 52 by Poor share).

That is 7.9% of the state's inventory, against an average of 7.5% across the 54 states and territories with Poor-rated bridges on file, which places it 37 of 54 ordered from the lowest Poor share upward. A bridge is rated Poor when its weakest applicable component scores 4 or below on the inspecting agency's 0-9 scale, so the category is a maintenance and funding signal rather than a closure order or a live crossing-safety verdict.

Inventory: FHWA NBI 2024 · last ETL August 2026

Total Bridges

1,685

Public highway bridges in Alaska

Good Condition

45.6%

768 bridges rated 7-9

-4.4pp vs 50% benchmark

Poor Condition

7.9%

133 bridges whose lowest applicable component is rated 0-4

0.4pp vs national avg 7.5%

Alaska vs national bridge condition

Alaska - Good condition share 45.6%
National avg

Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).

Alaska - Poor-condition share 26.3%
National avg

Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.5%.

Alaska in the national condition pattern

Each point is a state or territory in the FHWA NBI; the highlighted point is this profile.

Inventory size and Poor-condition share are different measures: Alaska has 1,685 bridges and a 7.9% Poor-condition share in the 2024 NBI, rank #37 of 54 jurisdictions ordered from the lowest share upward. The dashed comparisons mark the national average state rate and the midpoint of the plotted inventory range; neither is a live safety or closure threshold. Scatter plot of 54 data points. 0%10%20%30%40% 0k20k40k60k Public bridges in inventory (thousands) Poor-condition share (%) AK, Public bridges in inventory (thousands): 1.7k · Poor-condition share (%): 7.89%AL, Public bridges in inventory (thousands): 16.2k · Poor-condition share (%): 3.35%AZ, Public bridges in inventory (thousands): 8.6k · Poor-condition share (%): 1.15%AR, Public bridges in inventory (thousands): 13k · Poor-condition share (%): 5.43%CA, Public bridges in inventory (thousands): 25.8k · Poor-condition share (%): 5.91%CO, Public bridges in inventory (thousands): 9k · Poor-condition share (%): 4.82%CT, Public bridges in inventory (thousands): 4.4k · Poor-condition share (%): 4.72%DE, Public bridges in inventory (thousands): 0.9k · Poor-condition share (%): 1.26%DC, Public bridges in inventory (thousands): 0.3k · Poor-condition share (%): 1.95%FL, Public bridges in inventory (thousands): 13k · Poor-condition share (%): 2.79%GA, Public bridges in inventory (thousands): 15.1k · Poor-condition share (%): 1.59%GU, Public bridges in inventory (thousands): 0k · Poor-condition share (%): 12.77%HI, Public bridges in inventory (thousands): 1.2k · Poor-condition share (%): 6.53%ID, Public bridges in inventory (thousands): 4.6k · Poor-condition share (%): 4.9%IL, Public bridges in inventory (thousands): 26.9k · Poor-condition share (%): 9.35%IN, Public bridges in inventory (thousands): 19.5k · Poor-condition share (%): 5.22%IA, Public bridges in inventory (thousands): 23.7k · Poor-condition share (%): 19.16%KS, Public bridges in inventory (thousands): 24.9k · Poor-condition share (%): 5.26%KY, Public bridges in inventory (thousands): 14.5k · Poor-condition share (%): 7.37%LA, Public bridges in inventory (thousands): 12.7k · Poor-condition share (%): 11.48%ME, Public bridges in inventory (thousands): 2.5k · Poor-condition share (%): 15.41%MD, Public bridges in inventory (thousands): 5.5k · Poor-condition share (%): 4.56%MA, Public bridges in inventory (thousands): 5.3k · Poor-condition share (%): 8.88%MI, Public bridges in inventory (thousands): 11.4k · Poor-condition share (%): 11.27%MN, Public bridges in inventory (thousands): 13.5k · Poor-condition share (%): 4.44%MS, Public bridges in inventory (thousands): 16.7k · Poor-condition share (%): 6.03%MO, Public bridges in inventory (thousands): 24.6k · Poor-condition share (%): 8.95%MT, Public bridges in inventory (thousands): 5.2k · Poor-condition share (%): 6.81%NE, Public bridges in inventory (thousands): 15.4k · Poor-condition share (%): 7.9%NV, Public bridges in inventory (thousands): 2.1k · Poor-condition share (%): 1.14%NH, Public bridges in inventory (thousands): 2.5k · Poor-condition share (%): 7.51%NJ, Public bridges in inventory (thousands): 6.8k · Poor-condition share (%): 6.01%NM, Public bridges in inventory (thousands): 4k · Poor-condition share (%): 4.51%NY, Public bridges in inventory (thousands): 17.6k · Poor-condition share (%): 9.43%NC, Public bridges in inventory (thousands): 19.2k · Poor-condition share (%): 6.76%ND, Public bridges in inventory (thousands): 4.3k · Poor-condition share (%): 10.98%OH, Public bridges in inventory (thousands): 26.7k · Poor-condition share (%): 4.74%OK, Public bridges in inventory (thousands): 22.9k · Poor-condition share (%): 7.7%OR, Public bridges in inventory (thousands): 8.3k · Poor-condition share (%): 4.61%PA, Public bridges in inventory (thousands): 23.3k · Poor-condition share (%): 12.58%PR, Public bridges in inventory (thousands): 2.4k · Poor-condition share (%): 13.92%RI, Public bridges in inventory (thousands): 0.8k · Poor-condition share (%): 15.2%SC, Public bridges in inventory (thousands): 9.5k · Poor-condition share (%): 6.17%SD, Public bridges in inventory (thousands): 5.9k · Poor-condition share (%): 16.36%TN, Public bridges in inventory (thousands): 20.4k · Poor-condition share (%): 4.41%TX, Public bridges in inventory (thousands): 56.7k · Poor-condition share (%): 1.23%UT, Public bridges in inventory (thousands): 3.1k · Poor-condition share (%): 2.91%VT, Public bridges in inventory (thousands): 2.9k · Poor-condition share (%): 2.9%VI, Public bridges in inventory (thousands): 0k · Poor-condition share (%): 29.17%VA, Public bridges in inventory (thousands): 14.1k · Poor-condition share (%): 3.39%WA, Public bridges in inventory (thousands): 8.5k · Poor-condition share (%): 5.45%WV, Public bridges in inventory (thousands): 7.3k · Poor-condition share (%): 18.64%WI, Public bridges in inventory (thousands): 14.4k · Poor-condition share (%): 6.52%WY, Public bridges in inventory (thousands): 3.1k · Poor-condition share (%): 6.51%
Inventory size and Poor-condition share are different measures: Alaska has 1,685 bridges and a 7.9% Poor-condition share in the 2024 NBI, rank #37 of 54 jurisdictions ordered from the lowest share upward. The dashed comparisons mark the national average state rate and the midpoint of the plotted inventory range; neither is a live safety or closure threshold.

Alaska vs all states by public bridge inventory

Where this state's FHWA NBI public-highway bridge count sits among every state and territory on PlainBridges

1,685 48th of 54 higher than 6 of 54 states

States and territories, banded by public bridge inventory size

Each bar is a band; taller bars hold more states. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source FHWA National Bridge Inventory · 2024

Read the rank neighborhood for Alaska

The highlighted point is Alaska: 1,685 bridges and 7.89% in Poor condition, rank #37 of 54 jurisdictions ordered from the lowest share upward. The five jurisdictions immediately above and below Alaska on that same Poor-share ordering:

  • New Hampshire: 2,542 bridges · 7.51% Poor
  • Oklahoma: 22,917 bridges · 7.70% Poor
  • Alaska: 1,685 bridges · 7.89% Poor
  • Nebraska: 15,398 bridges · 7.90% Poor
  • Massachusetts: 5,295 bridges · 8.88% Poor

The full national sortable table lives on the rankings page.

Material families in Alaska

Exclusive FHWA material families across all 1,685 bridges in this state; continuous variants fold into the parent family. Orthogonal to the Poor-share scatter above.

Who maintains Alaska’s inventory

State agency holds 53.2% of the 1,685 public highway bridges filed under Alaska in the 2024 NBI, the agency-of-record split for this state, not a condition verdict.

When Alaska’s bridges were built

Pre-1950 construction accounts for 1.8% of the 1,685 bridges with a recorded original year in Alaska. Era bands are orthogonal to the Poor-share ranking above.

Condition Distribution

Alaska45.6%46.5%GoodFairPoor
Bridge inventory deck-condition mix - Alaska (FHWA NBI)

Counties (30)

Aleutians East 16 Aleutians West 8 Anchorage 134 Bethel 13 Bristol Bay 2 Chugach 66 Copper River 52 Denali 27 Dillingham 3 Fairbanks North Star 111 Haines 20 Hoonah-Angoon 125 Juneau City and 47 Kenai Peninsula 103 Ketchikan Gateway 100 Kodiak Island 25 Kusilvak 1 Lake and Peninsula 10 Matanuska-Susitna 120 Nome 30 North Slope 16 Northwest Arctic 7 Petersburg 141 Prince of Wales-Hyder 234 Sitka City and 37 Skagway 6 Southeast Fairbanks 64 Wrangell City and 58 Yakutat City and 15 Yukon-Koyukuk 94

Alaska vs nearby ranks

Adjacent states by Poor-condition share (lower share = better)

States are ranked by the share of bridges whose lowest applicable component rating is 4 or below. This describes recorded condition; it does not measure funding effectiveness or live crossing safety. States here sit immediately above and below Alaska on the same metric.

NH

New Hampshire

7.51% top marginal rate
Structure
Progressive
Burden @ $100K
$2,542

OK

Oklahoma

7.70% top marginal rate
Structure
Progressive
Burden @ $100K
$22,917
Selected

AK

Alaska

7.89% top marginal rate
Structure
Progressive
Burden @ $100K
$1,685

NE

Nebraska

7.90% top marginal rate
Structure
Progressive
Burden @ $100K
$15,398

MA

Massachusetts

8.88% top marginal rate
Structure
Progressive
Burden @ $100K
$5,295

Bridges Needing Most Attention in Alaska

Six lowest-condition bridges in Alaska, ranked by the portal's composite display score. Inspection intervals are risk-based under current NBIS rules.

IRR BIA RTE 1026

Poor

Over: UNNAMED CREEK

0.5 MI. N OF WINDY BAY RD, Kenai Peninsula, AK

Built 1997 Load: 0.0 t ADT: 10

IRR BIA RTE 1026

Poor

Over: UNNAMED CREED

0.8 MI N OF WINDY BAY RD., Kenai Peninsula, AK

Built 1997 Load: 0.0 t ADT: 10

IRR BIA RTE 8PGH

Poor

Over: UNNAMED CREEK

14.5 Mi SE of Port Graham, Kenai Peninsula, AK

Built 1997 Load: 0.0 t ADT: 5

IRR BIA RTE 8PGH

Poor

Over: UNNAMED CREEK

15.4 Mi SE of Port Graha, Kenai Peninsula, AK

Built 1997 Load: 0.0 t ADT: 5

IRR BIA RTE 1045

Poor

Over: UNNAMED STREAM

0.2KM NW OF BARGE LANDING, Bethel, AK

Built 1980 Load: 0.0 t

IRR BIA RTE 002

Poor

Over: UNNAMED STREAM

NUIQSUT, North Slope, AK

Built 1980 Load: 0.0 t

All Bridges in Alaska

LOGGING ROAD

Fair

Over: STREAM

MITKOF ISLAND, Petersburg, AK

Built 1988 Load: 49.9 t ADT: 10

LOGGING ROAD

Fair

Over: FALSE CREEK

FALSE ISLAND, Sitka City and, AK

Built 1982 Load: 49.9 t

8430000

Fair

Over: PERM

SHOAL COVE, Ketchikan Gateway, AK

Built 1982 Load: 49.9 t ADT: 5

NABESNA ROAD

Fair

Over: JACK CREEK

MILE POINT 35.2, Copper River, AK

Built 1969 Load: 50.0 t ADT: 80

NO DATA ENTERED

Fair

Over: NO DATA ENTERED

TONKA, Petersburg, AK

Built 2006 Load: 50.5 t ADT: 5

NO DATA ENTERED

Fair

Over: NO DATA ENTERED

TONKA, Petersburg, AK

Built 2004 Load: 50.9 t ADT: 5

ALASKA HIGHWAY

Fair

Over: LITTLE GERSTLE RIVER

MILE POINT 164.1, Southeast Fairbanks, AK

Built 1999 Load: 51.3 t ADT: 180

IRR:NEWHALEN ROAD

Fair

Over: NORTH FORK ALEXCY CREEK

ILIAMNA, Lake and Peninsula, AK

Built 1985 Load: 51.6 t ADT: 50

CUSHMAN - AK HWY

Fair

Over: C-N RAMP OC

FAIRBANKS, Fairbanks North Star, AK

Built 1988 Load: 52.0 t ADT: 1,720

EXIT GLACIER ROAD

Fair

Over: BOX CANYON CREEK

MILE POINT 1.4, Kenai Peninsula, AK

Built 1995 Load: 52.2 t ADT: 480

43500

Fair

Over: LOG

TONKA, Petersburg, AK

Built 2002 Load: 52.2 t ADT: 5

HALIBUT POINT ROAD

Fair

Over: GRANITE CREEK

MILE POINT 4.3, Sitka City and, AK

Built 2014 Load: 52.5 t ADT: 2,700

FDR 6270

Fair

Over: STREAM

WRANGELL ISLAND, Wrangell City and, AK

Built 1982 Load: 52.5 t ADT: 10

FDR 6299

Fair

Over: STREAM - PERM

WRANGELL ISLAND, Wrangell City and, AK

Built 1982 Load: 52.5 t ADT: 10

HALIBUT POINT ROAD

Fair

Over: NO NAME CREEK

MILE POINT 6.6, Sitka City and, AK

Built 2014 Load: 53.0 t ADT: 1,360

FDR 6590

Fair

Over: STREAM - PERM

ZAREMBO ISLAND, Wrangell City and, AK

Built 1985 Load: 53.5 t ADT: 5

DALTON HIGHWAY

Fair

Over: KUPARUK RIVER

MILE POINT 289.2, North Slope, AK

Built 1994 Load: 54.3 t ADT: 130

FDR6585

Fair

Over: STREAM - LOG

ZAREMBO ISLAND, Wrangell City and, AK

Built 1986 Load: 54.8 t

FDR 6590

Fair

Over: STREAM - PERM

ZAREMBO ISLAND, Wrangell City and, AK

Built 1983 Load: 54.8 t ADT: 5

NO DATA ENTERED

Fair

Over: NO DATA ENTERED

TONKA, Petersburg, AK

Built 2006 Load: 55.4 t ADT: 5

EDGERTON/MCCARTHY

Fair

Over: KUSKULANA RIVER

MILE POINT 50.6, Copper River, AK

Built 1910 Load: 55.9 t ADT: 70

LOGGING ROAD

Fair

Over: STREAM

MITKOF ISLAND, Petersburg, AK

Built 1980 Load: 56.1 t ADT: 50

3000000-23.95

Fair

Over: PERM

THORNE BAY, Prince of Wales-Hyder, AK

Built 1985 Load: 56.4 t ADT: 50

ALASKA HIGHWAY

Fair

Over: SEARS CREEK

MILE POINT 150.2, Southeast Fairbanks, AK

Built 1982 Load: 56.5 t ADT: 190

MARINE HWY ROUTE

Fair

Over: HOMER CITY DOCK

HOMER, Kenai Peninsula, AK

Built 2002 Load: 56.8 t ADT: 850

IRR:MARINE HWY RTE

Fair

Over: CHENEGA RAMP

CHENEGA BAY, Chugach, AK

Built 1995 Load: 57.5 t ADT: 10

1500000-35.667

Fair

Over: PERM

EL CAP, Prince of Wales-Hyder, AK

Built 1982 Load: 58.6 t ADT: 10

ROAD

Fair

Over: STREAM

TONKA, Petersburg, AK

Built 2004 Load: 59.9 t ADT: 5

JOHANSEN EXPRESSWY

Fair

Over: PEGER/GEIST OVERCROSSING

MILE POINT 1.0, Fairbanks North Star, AK

Built 1993 Load: 60.1 t ADT: 18,000

LOGGING ROAD

Fair

Over: STREAM

TONKA, Petersburg, AK

Built 1976 Load: 60.6 t ADT: 5

8400600-0.59

Fair

Over: MOD

UPPER CARROLL, Ketchikan Gateway, AK

Built 2007 Load: 60.9 t ADT: 2

THORNE BAY ROAD

Fair

Over: NEWLUNBERRY CREEK

MILE POINT 5.5, Prince of Wales-Hyder, AK

Built 1975 Load: 62.8 t ADT: 190

LOGGING ROAD

Fair

Over: BEAVER POND OUTLET

CORNER BAY, Sitka City and, AK

Built 2004 Load: 64.5 t

SHERIDAN GLCR ROAD

Fair

Over: SHERIDAN CREEK

NO DATA ENTERED, Chugach, AK

Built 2006 Load: 65.1 t ADT: 10

HALIBUT POINT ROAD

Fair

Over: CASCADE CREEK

MILE POINT 2.0, Sitka City and, AK

Built 1937 Load: 65.3 t ADT: 4,790

DALTON HIGHWAY

Fair

Over: PROSPECT CREEK

MILE POINT 134.7, Yukon-Koyukuk, AK

Built 1972 Load: 65.5 t ADT: 140

DALTON HIGHWAY

Fair

Over: SOUTH FORK KOYUKUK RIVER

MILE POINT 155.8, Yukon-Koyukuk, AK

Built 1972 Load: 65.5 t ADT: 140

DALTON HIGHWAY

Fair

Over: MID FORK KOYUKUK RIVER 1

MILE POINT 188.0, Yukon-Koyukuk, AK

Built 1972 Load: 65.5 t ADT: 140

DALTON HIGHWAY

Fair

Over: MID FORK KOYUKUK RIVER 2

MILE POINT 190.3, Yukon-Koyukuk, AK

Built 1972 Load: 65.5 t ADT: 110

DALTON HIGHWAY

Fair

Over: MID FORK KOYUKUK RIVER 3

MILE POINT 204.2, Yukon-Koyukuk, AK

Built 1972 Load: 65.5 t ADT: 110

DALTON HIGHWAY

Fair

Over: MID FORK KOYUKUK RIVER 4

MILE POINT 204.4, Yukon-Koyukuk, AK

Built 1972 Load: 65.5 t ADT: 110

DALTON HIGHWAY

Fair

Over: MINNIE CREEK

MILE POINT 186.7, Yukon-Koyukuk, AK

Built 1972 Load: 65.5 t ADT: 140

DALTON HIGHWAY

Fair

Over: DIETRICH RIVER

MILE POINT 207.0, Yukon-Koyukuk, AK

Built 1972 Load: 65.5 t ADT: 110

DALTON HIGHWAY

Fair

Over: TREVOR CREEK

MILE POINT 259.0, North Slope, AK

Built 1982 Load: 65.8 t ADT: 130

NO DATA ENTERED

Fair

Over: NO DATA ENTERED

KUPREANOF ISLAND PORTAGE, Petersburg, AK

Built 2006 Load: 66.1 t

EGAN DRIVE

Fair

Over: SALMON CREEK POWERHOUSE

MILE POINT 3.0, Juneau City and, AK

Built 1973 Load: 66.6 t ADT: 16,900

GOOSE LAKE RD-KAKE

Fair

Over: RAINBOW CREEK

MILE POINT 7.5, Petersburg, AK

Built 1983 Load: 67.3 t ADT: 10

NO DATA ENTERED

Fair

Over: NO DATA ENTERED

SUEMEZ, Prince of Wales-Hyder, AK

Built 2008 Load: 68.4 t

NO DATA ENTERED

Fair

Over: NO DATA ENTERED

ZAREMBO ISLAND, Wrangell City and, AK

Built 2016 Load: 69.0 t ADT: 5

MARGARET

Fair

Over: NO DATA ENTERED

MARGARET, Ketchikan Gateway, AK

Built 2010 Load: 70.0 t

Showing 701-750 of 1,685 bridges

Related

All states → | National rankings → | Understanding conditions → | Retired SD term explained →
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges.

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). Poor condition is an inspection-record category, not a closure or unsafe-to-cross designation. Consult the bridge owner for current status.

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.

What to do with this

Use Alaska's inventory picture to drill to a county or a specific span.

  • Browse counties in Alaska and open the highest-Poor shares first. County list
  • See where this state sits among peers on Poor-condition share. State rankings
  • Compare this state with another jurisdiction on the same measures. State compare

NBI condition ratings are inventory snapshots, not live crossing-safety verdicts.

Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. Alaska Good/Fair/Poor shares and county rollups on this page are computed from the same NBI extract as the national boards; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2024 NBI release. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.