State profile · Near median Poor share

Wyoming 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 Wyoming.

3,136
Public bridges
30.1%
Good condition
6.5%
Poor condition

Wyoming holds 3,136 public highway bridges (#41 of 52 by inventory) with a 6.51% Poor share (#24 of 52 by Poor share).

That is 6.5% 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 29 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

3,136

Public highway bridges in Wyoming

Good Condition

30.1%

943 bridges rated 7-9

-19.9pp vs 50% benchmark

Poor Condition

6.5%

204 bridges whose lowest applicable component is rated 0-4

-1.0pp vs national avg 7.5%

Wyoming vs national bridge condition

Wyoming - Good condition share 30.1%
National avg

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

Wyoming - Poor-condition share 21.7%
National avg

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

Wyoming 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: Wyoming has 3,136 bridges and a 6.5% Poor-condition share in the 2024 NBI, rank #29 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 (%) WY, Public bridges in inventory (thousands): 3.1k · Poor-condition share (%): 6.51%AL, Public bridges in inventory (thousands): 16.2k · Poor-condition share (%): 3.35%AK, Public bridges in inventory (thousands): 1.7k · Poor-condition share (%): 7.89%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%
Inventory size and Poor-condition share are different measures: Wyoming has 3,136 bridges and a 6.5% Poor-condition share in the 2024 NBI, rank #29 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.

Wyoming 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

3,136 41st of 54 higher than 13 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 Wyoming

The highlighted point is Wyoming: 3,136 bridges and 6.51% in Poor condition, rank #29 of 54 jurisdictions ordered from the lowest share upward. The five jurisdictions immediately above and below Wyoming on that same Poor-share ordering:

  • Mississippi: 16,739 bridges · 6.03% Poor
  • South Carolina: 9,490 bridges · 6.17% Poor
  • Wyoming: 3,136 bridges · 6.51% Poor
  • Wisconsin: 14,446 bridges · 6.52% Poor
  • Hawaii: 1,195 bridges · 6.53% Poor

The full national sortable table lives on the rankings page.

Material families in Wyoming

Exclusive FHWA material families across all 3,136 bridges in this state; continuous variants fold into the parent family. Orthogonal to the Poor-share scatter above.

Who maintains Wyoming’s inventory

State agency holds 62.9% of the 3,136 public highway bridges filed under Wyoming in the 2024 NBI, the agency-of-record split for this state, not a condition verdict.

When Wyoming’s bridges were built

Pre-1950 construction accounts for 5.2% of the 3,136 bridges with a recorded original year in Wyoming. Era bands are orthogonal to the Poor-share ranking above.

Condition Distribution

Wyoming30.1%63.4%GoodFairPoor
Bridge inventory deck-condition mix - Wyoming (FHWA NBI)

Counties (23)

Albany 124 Big Horn 91 Campbell 152 Carbon 206 Converse 137 Crook 176 Fremont 177 Goshen 106 Hot Springs 39 Johnson 204 Laramie 254 Lincoln 129 Natrona 135 Niobrara 34 Park 187 Platte 160 Sheridan 170 Sublette 109 Sweetwater 191 Teton 119 Uinta 132 Washakie 61 Weston 43

Wyoming 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 Wyoming on the same metric.

MS

Mississippi

6.03% top marginal rate
Structure
Progressive
Burden @ $100K
$16,739

SC

South Carolina

6.17% top marginal rate
Structure
Progressive
Burden @ $100K
$9,490
Selected

WY

Wyoming

6.51% top marginal rate
Structure
Progressive
Burden @ $100K
$3,136

WI

Wisconsin

6.52% top marginal rate
Structure
Progressive
Burden @ $100K
$14,446

HI

Hawaii

6.53% top marginal rate
Structure
Progressive
Burden @ $100K
$1,195

Bridges Needing Most Attention in Wyoming

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

We Cnty Rd 1A

Poor

Over: Beaver Creek

23 Miles Se Of Newcastle, Weston, WY

Built 1933 Load: 0.0 t ADT: 136

Wa Cnty Rd 580

Poor

Over: East Fork Sand Creek

8 Mi+East Of Worland, Washakie, WY

Built 1935 Load: 0.0 t ADT: 4

Fr Cnty Rd 523

Poor

Over: Twin Creek

15 Mi. S.E. Of Lander, Fremont, WY

Built 1932 Load: 0.0 t ADT: 8

FIREHOLE LAKE DRIV

Poor

Over: THERMAL AREA DRAINAGE

10 +/- MI. SOUTH OF MADIS, Teton, WY

Built 1935 Load: 3.6 t ADT: 1,500

Sb Cnty Rd 175

Poor

Over: New Fork River

T30N R110W S22, Sublette, WY

Built 1940 Load: 4.3 t ADT: 11

Cb Cnty Rd 680

Poor

Over: Encampment River

4 Miles N. Of Encampment, Carbon, WY

Built 1915 Load: 4.9 t ADT: 70

All Bridges in Wyoming

Sb Cnty Rd 114

Fair

Over: Dell Creek

4 Mi N.E. Of Bondurant, Sublette, WY

Built 1992 Load: 51.3 t ADT: 145

Fr Cnty Rd 345

Fair

Over: S Fork Little Wind River

1 Mi E. Of Ft Washakie, Fremont, WY

Built 1960 Load: 51.3 t ADT: 168

WYO 257

Fair

Over: Unnamed Draw

Casper Streets, Natrona, WY

Built 2013 Load: 51.5 t ADT: 1,066

SOUTH ENTRANCE ROA

Fair

Over: CRAWFISH CREEK

1.2 MILES NORTH OF SOUTH, Teton, WY

Built 1934 Load: 51.7 t ADT: 3,952

I-25 NBL

Fair

Over: Middle Bear Creek

Wheatland - Glendo, Platte, WY

Built 1961 Load: 51.7 t ADT: 3,471

I-25 SBL

Fair

Over: Middle Bear Creek

Wheatland - Glendo, Platte, WY

Built 1961 Load: 51.7 t ADT: 3,318

US 89

Fair

Over: Salt River

Afton - Alpine Jct, Lincoln, WY

Built 1960 Load: 51.7 t ADT: 6,794

Sb Cnty Rd 150

Fair

Over: Apex Ditch

7 Mi. N.W. Of Daniel Jct, Sublette, WY

Built 1989 Load: 51.7 t ADT: 49

Bh Cnty Rd 57

Fair

Over: Unnamed Draw

10 M Se Jct 789 C Rd 55, Big Horn, WY

Built 1970 Load: 51.7 t ADT: 9

Sb Cnty Rd 108

Fair

Over: Jack Creek

1 Mi. N.E. Of Bondurant, Sublette, WY

Built 1992 Load: 51.7 t ADT: 145

I-80 EBL

Fair

Over: UPRR

Laramie Maginal, Albany, WY

Built 1999 Load: 51.7 t ADT: 9,282

I-80 Bus

Fair

Over: Blacks Fork River

I-80 Jct - Fort Bridger, Uinta, WY

Built 2006 Load: 51.7 t ADT: 2,772

Ln Cnty Rd 111

Fair

Over: Salt River

2 Mi Nw Of Etna, Lincoln, WY

Built 1994 Load: 52.2 t ADT: 251

I-80 EBL

Fair

Over: Wamsutter-Crooks Gap Rd

Rock Springs - Rawlins, Sweetwater, WY

Built 2009 Load: 52.2 t ADT: 6,528

I-80 WBL

Fair

Over: Wamsutter-Crooks Gap Rd

Rock Springs - Rawlins, Sweetwater, WY

Built 2010 Load: 52.2 t ADT: 6,551

WYO 59

Fair

Over: Horse Creek

Gillette - Montan Line, Campbell, WY

Built 2015 Load: 52.2 t ADT: 994

1st Street

Fair

Over: Smiths Fork River

Mountain View Streets, Uinta, WY

Built 1969 Load: 52.6 t ADT: 71

Cl Cnty Rd 96

Fair

Over: Dry Donkey Creek

10 Mi. E. Of Gillette, Campbell, WY

Built 1978 Load: 52.6 t ADT: 150

Warren Peak Road

Fair

Over: Beaver Creek

4 Miles East Of Alva, Crook, WY

Built 1990 Load: 52.9 t ADT: 26

US 20

Fair

Over: Niobrara River

Lusk Streets 3Rd Street, Niobrara, WY

Built 2003 Load: 52.9 t ADT: 970

Sw Cnty Rd 8

Fair

Over: Green River

Fontenelle - Co. Line, Sweetwater, WY

Built 1991 Load: 53.1 t ADT: 251

GRAND LOOP ROAD

Fair

Over: GIBBON RIVER

20.2 MI. SOUTH OF MAMMOTH, Park, WY

Built 1960 Load: 53.5 t ADT: 1,807

Ln Cnty Rd 104

Fair

Over: Salt River

4 Miles S. Of Alpine, Lincoln, WY

Built 1991 Load: 53.5 t ADT: 120

Al Cnty Rd 610

Fair

Over: Rock Creek

14 Mi N Of Rock River, Albany, WY

Built 1996 Load: 53.5 t ADT: 21

Ni Cnty Rd 6

Fair

Over: Alkali Creek

3 Mi. Nw Of Mule Crk Jct, Niobrara, WY

Built 1997 Load: 53.5 t ADT: 33

Al Cnty Rd 57A

Fair

Over: Little Laramie River

14 Mi E.Ne. Of Centennial, Albany, WY

Built 1999 Load: 53.5 t ADT: 51

WYO 220

Fair

Over: North Platte River

13 Mi Sw Of Casper, Natrona, WY

Built 2002 Load: 53.9 t ADT: 3,066

Pa Cnty Rd 4DT

Fair

Over: Sunshine Supply Canal

14 Miles Sw Of Meeteetse, Park, WY

Built 1973 Load: 54.0 t ADT: 175

WYO 256

Fair

Over: North Platte River

Jct Us 20 2687 - North, Natrona, WY

Built 1971 Load: 54.2 t ADT: 3,014

GRAND LOOP ROAD

Fair

Over: BRIDGE BAY INLET

2.0 MI. SOUTH OF LAKE JCT, Teton, WY

Built 1961 Load: 54.4 t ADT: 1,807

I-90 WBL

Fair

Over: Jo CR 85 (Shell Creek)

Sheridan - Buffalo, Johnson, WY

Built 1966 Load: 54.4 t ADT: 3,700

Cr Cnty Rd 180

Fair

Over: Arch Creek

7 Mi. N.E. Of Pine Haven, Crook, WY

Built 1992 Load: 54.4 t ADT: 126

I-80 EBL

Fair

Over: UPRR / Killpecker Creek

Rock Springs Marginal, Sweetwater, WY

Built 2004 Load: 54.4 t ADT: 9,213

Sh Cnty Rd 2

Fair

Over: North Piney Creek

2 Miles W. Of Storey, Sheridan, WY

Built 1914 Load: 55.3 t ADT: 31

Co Cnty Rd 4

Fair

Over: Red Draw

17 Mi. S.W. Of Douglas, Converse, WY

Built 1996 Load: 55.3 t ADT: 98

WYO 237

Fair

Over: West Channel Salt River

Grover-Auburn Road, Lincoln, WY

Built 2004 Load: 55.3 t ADT: 548

Pa Cnty Rd 4DT

Fair

Over: Wood River

12 Miles Sw Of Meteetse, Park, WY

Built 1925 Load: 55.8 t ADT: 175

Connecticut Ave

Fair

Over: Dead Horse Canyon Creek

Rock Springs, Sweetwater, WY

Built 1995 Load: 55.9 t ADT: 1,162

US 89

Fair

Over: Etna Irrigation Canal

Afton - Alpine Jct, Lincoln, WY

Built 1960 Load: 56.2 t ADT: 6,794

Cb Cnty Rd 291

Fair

Over: Austin Creek

12 Miles N.W. Of Hanna, Carbon, WY

Built 1948 Load: 56.2 t ADT: 121

Avoca Avenue

Fair

Over: Little Goose Creek

Sheridan Streets, Sheridan, WY

Built 2005 Load: 56.2 t ADT: 2,886

I-90 EBL

Fair

Over: Jo CR 85 (Shell Creek)

Sheridan - Buffalo, Johnson, WY

Built 1966 Load: 57.2 t ADT: 3,533

US 14A

Fair

Over: Shoshone River

Cody - Powell, Park, WY

Built 1957 Load: 57.2 t ADT: 7,149

Cl Cnty Rd 30

Fair

Over: BNSF Railway

10 Mi. S.E. Of Reno Jct, Campbell, WY

Built 1981 Load: 57.2 t ADT: 877

US 89

Fair

Over: Salt River

Afton - Alpine Jct, Lincoln, WY

Built 1960 Load: 57.6 t ADT: 6,794

I-25 SBL

Fair

Over: US 20 / 26 Connector

Casper Marginal, Natrona, WY

Built 1984 Load: 57.6 t ADT: 10,342

U.S. ROUTE 89

Fair

Over: CHRISTIAN CREEK

5 miles west of Moran Jun, Teton, WY

Built 1963 Load: 58.0 t ADT: 5,000

U.S. ROUTE 89

Fair

Over: PACIFIC CREEK

1.5 miles west of Moran J, Teton, WY

Built 1958 Load: 58.0 t ADT: 5,000

US 30 / I-80 Bus

Fair

Over: Spring Creek

Laramie - Grand Ave, Albany, WY

Built 1981 Load: 58.1 t ADT: 14,742

WYO 296

Fair

Over: Sunlight Creek

Clarks Fork Road, Park, WY

Built 1985 Load: 58.1 t ADT: 832

Showing 1,901-1,950 of 3,136 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 Wyoming's inventory picture to drill to a county or a specific span.

  • Browse counties in Wyoming 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. Wyoming 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.