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

FDR 6590

Poor

Over: STREAM - MOD

ZAREMBO ISLAND, Wrangell City and, AK

Built 1980 Load: 19.8 t ADT: 5

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

PUBLIC ROAD

Poor

Over: W.F. SITUK

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

Built 1985 Load: 19.8 t

2160000

Poor

Over: MOD

LANCASTER, Prince of Wales-Hyder, AK

Built 1990 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 AT KAKE, Petersburg, AK

Built 2003 Load: 19.8 t ADT: 10

3013000-1.06

Poor

Over: MOD

CONTROL LAKE, Prince of Wales-Hyder, AK

Built 1977 Load: 19.8 t ADT: 5

91 MILE LOOP

Poor

Over: LITTLE TOK RIVER

OLD TOK ALIGNMENT MP0.0, Copper River, AK

Built 1979 Load: 20.0 t ADT: 336

GLENN HIGHWAY

Poor

Over: KINGS RIVER

MILE POINT 59.1, Matanuska-Susitna, AK

Built 1961 Load: 20.4 t ADT: 1,580

LOGGING ROAD

Poor

Over: NO DATA ENTERED

ZAREMBO ISLAND, Wrangell City and, AK

Built 1991 Load: 20.4 t

ROAD

Poor

Over: STREAM

SALT LAKE BAY, Hoonah-Angoon, AK

Built 2002 Load: 20.4 t

3065000-2.349

Poor

Over: MOD

WHALE PASS, Prince of Wales-Hyder, 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

ROAD

Poor

Over: STREAM -1990

EIGHT FATHOM BIGHT, Hoonah-Angoon, AK

Built 1990 Load: 22.7 t

COPPER RIVER HWY

Poor

Over: MILLION DOLLAR BRIDGE

MILE POINT 48.8, Chugach, AK

Built 1910 Load: 23.2 t ADT: 65

43500

Poor

Over: LOG

TONKA, Petersburg, AK

Built 2002 Load: 24.3 t ADT: 5

43506

Poor

Over: LOG

TONKA, Petersburg, AK

Built 2002 Load: 24.3 t ADT: 5

PARKS HIGHWAY

Poor

Over: NENANA RIVER AT REX

MILE POINT 240.3, Denali, AK

Built 1963 Load: 24.5 t ADT: 910

RICHARDSON HIGHWAY

Poor

Over: CASTNER CREEK

MILE POINT 219.9, Southeast Fairbanks, AK

Built 1958 Load: 24.5 t ADT: 280

MARINE HWY ROUTE

Poor

Over: COLD BAY DOCK

COLD BAY, Aleutians East, AK

Built 1980 Load: 24.5 t ADT: 10

CACHE CREEK ROAD

Poor

Over: FORTUNE CREEK

FAIRBANKS DNR, Fairbanks North Star, AK

Built 1991 Load: 24.8 t ADT: 30

MINNIE STREET

Poor

Over: NOYES SLOUGH (MINNIE ST)

MILE POINT 0.4, Fairbanks North Star, AK

Built 1953 Load: 24.9 t ADT: 4,130

COPPER RIVER HWY

Poor

Over: EYAK RIVER

MILE POINT 5.7, Chugach, AK

Built 1954 Load: 24.9 t ADT: 1,110

FUNNY RIVER ROAD

Poor

Over: FUNNY RIVER

MILE POINT 11.1, Kenai Peninsula, AK

Built 1969 Load: 24.9 t ADT: 1,830

NAUTICAL AVENUE

Poor

Over: SALMON CREEK TRIBUTARY

MILE POINT 0.1, Kenai Peninsula, AK

Built 1970 Load: 24.9 t ADT: 100

NO DATA ENTERED

Poor

Over: NO DATA ENTERED

TONKA, Petersburg, AK

Built 2004 Load: 24.9 t ADT: 5

SHELTER COVE ROAD

Poor

Over: HARRIET HUNT CREEK

MILE POINT 2.7, Ketchikan Gateway, AK

Built 1981 Load: 25.0 t ADT: 125

MARINE HWY ROUTE

Poor

Over: SKAGWAY FERRY TERMINAL

SKAGWAY, Skagway, AK

Built 1980 Load: 25.1 t ADT: 947

ALASKA HIGHWAY

Poor

Over: JOHNSON RIVER

MILE POINT 156.1, Southeast Fairbanks, AK

Built 1944 Load: 25.3 t ADT: 180

ROAD

Poor

Over: NO DATA ENTERED

SALT LAKE BAY, Hoonah-Angoon, AK

Built 2002 Load: 25.6 t

RICHARDSON HIGHWAY

Poor

Over: GUNN CREEK

MILE POINT 199.5, Copper River, AK

Built 1954 Load: 25.7 t ADT: 200

IRR:JAKOLOF BAY RD

Poor

Over: BARABARA CREEK

MILE POINT 4.4, Kenai Peninsula, AK

Built 1968 Load: 25.9 t ADT: 110

LOGGING ROAD

Poor

Over: STREAM

SALT LAKE BAY, Hoonah-Angoon, AK

Built 2003 Load: 25.9 t

ROAD

Poor

Over: NO DATA ENTERED

SALT LAKE BAY, Hoonah-Angoon, AK

Built 2002 Load: 26.2 t

SOUTH TONGASS HWY

Poor

Over: HOADLEY CREEK

MILE POINT 0.2, Ketchikan Gateway, AK

Built 1957 Load: 26.5 t ADT: 11,900

ALASKA HIGHWAY

Poor

Over: GERSTLE RIVER

MILE POINT 168.3, Southeast Fairbanks, AK

Built 1944 Load: 26.6 t ADT: 180

IRR:AIRPORT ROAD

Poor

Over: SHAGELUK SLOUGH

SHAGELUK, Yukon-Koyukuk, AK

Built 1978 Load: 26.6 t ADT: 11

ROAD

Poor

Over: STREAM

SALT LAKE BAY, Hoonah-Angoon, AK

Built 2002 Load: 26.6 t

RICHARDSON HIGHWAY

Poor

Over: UPPER MILLER CREEK

MILE POINT 217.9, Southeast Fairbanks, AK

Built 1958 Load: 26.7 t ADT: 280

AMALGA STREET

Poor

Over: JORDAN CREEK (AMALGA ST)

MILE POINT 0.1, Juneau City and, AK

Built 1982 Load: 26.9 t ADT: 200

8330000

Poor

Over: MOD

SHELTER, Ketchikan Gateway, AK

Built 1992 Load: 26.9 t

SOUTH TONGASS HWY

Poor

Over: WATER ST VIADUCT

MILE POINT 1.7, Ketchikan Gateway, AK

Built 1955 Load: 27.1 t ADT: 14,046

STANDARD CREEK RD

Poor

Over: STANDARD CREEK

MILE POINT 13.8, Fairbanks North Star, AK

Built 2006 Load: 27.7 t ADT: 30

Showing 1,601-1,650 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.