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

I-25 SBL

Fair

Over: Machinery Pass

Douglas - Casper, Converse, WY

Built 1967 Load: 28.1 t ADT: 4,702

I-25 SBL

Fair

Over: Machinery Pass

Douglas - Casper, Converse, WY

Built 1966 Load: 28.1 t ADT: 4,702

I-25 SBL

Fair

Over: Machinery Pass

Kaycee - Buffalo, Johnson, WY

Built 1968 Load: 28.1 t ADT: 1,770

I-80 WBL

Fair

Over: WYO 377

Rock Springs - Rawlins, Sweetwater, WY

Built 1964 Load: 28.1 t ADT: 6,832

WYO 78

Fair

Over: I-80

Rawlins Marginal, Carbon, WY

Built 1963 Load: 28.1 t ADT: 3,846

I-80 EBL

Fair

Over: Machinery Pass

Rawlins - Laramie, Carbon, WY

Built 1970 Load: 28.1 t ADT: 5,765

I-80 WBL

Fair

Over: Machinery Pass

Rawlins - Laramie, Carbon, WY

Built 1970 Load: 28.1 t ADT: 5,854

I-80 EBL

Fair

Over: CR 57 (Dutton Creek Rd)

Rawlins - Laramie, Albany, WY

Built 1969 Load: 28.1 t ADT: 4,887

I-80 EBL

Fair

Over: Blair-Wallis Road

Laramie - Cheyenne, Albany, WY

Built 1966 Load: 28.1 t ADT: 6,335

I-80 WBL

Fair

Over: Blair-Wallis Road

Laramie - Cheyenne, Albany, WY

Built 1966 Load: 28.1 t ADT: 6,568

I-90 EBL

Fair

Over: Kroe Lane

Sheridan Marginal, Sheridan, WY

Built 1961 Load: 28.1 t ADT: 4,669

I-90 WBL

Fair

Over: Kroe Lane

Sheridan Marginal, Sheridan, WY

Built 1961 Load: 28.1 t ADT: 5,095

I-90 EBL

Fair

Over: Machinery Pass

Sheridan - Buffalo, Sheridan, WY

Built 1968 Load: 28.1 t ADT: 3,447

I-90 WBL

Fair

Over: Machinery Pass

Sheridan - Buffalo, Sheridan, WY

Built 1968 Load: 28.1 t ADT: 3,517

I-90 EBL

Fair

Over: Machinery Pass

Buffalo - Gillette, Johnson, WY

Built 1961 Load: 28.1 t ADT: 2,110

I-90 WBL

Fair

Over: Machinery Pass

Buffalo - Gillette, Johnson, WY

Built 1961 Load: 28.1 t ADT: 2,033

I-90 EBL

Fair

Over: Machinery Pass

Sundance Marginal, Crook, WY

Built 1972 Load: 28.1 t ADT: 2,744

I-90 WBL

Fair

Over: Machinery Pass

Sundance Marginal, Crook, WY

Built 1972 Load: 28.1 t ADT: 2,777

I-90 Service Road

Fair

Over: Sundance Creek

Sundance - S Dakota Line, Crook, WY

Built 1954 Load: 28.1 t ADT: 270

US 20/26/87

Fair

Over: Claude Creek

East Yellowstone - Casper, Natrona, WY

Built 1957 Load: 28.1 t ADT: 2,833

US 189

Fair

Over: Horse Creek

Kemmerer - Daniel Jct, Sublette, WY

Built 1969 Load: 28.1 t ADT: 1,380

I-25 NBL

Fair

Over: Swanson Road

Wheatland Marginal, Platte, WY

Built 1975 Load: 28.1 t ADT: 3,243

I-90 WBL Off Ramp

Fair

Over: I-25 - I-90 Ramp

Buffalo Marginal, Johnson, WY

Built 1964 Load: 28.1 t ADT: 130

I-25 SBL

Fair

Over: Machinery Pass

Glendo - Douglas, Platte, WY

Built 1972 Load: 28.1 t ADT: 3,318

Cl Cnty Rd 1

Fair

Over: I-90

Gillette - Moorcroft, Campbell, WY

Built 1974 Load: 28.1 t ADT: 595

WYO 230

Fair

Over: Beaver Creek

Saratoga - Colo Line, Carbon, WY

Built 1981 Load: 28.1 t ADT: 642

US 191

Fair

Over: Hoback River

Daniel Jct - Hoback Jct, Sublette, WY

Built 1978 Load: 28.1 t ADT: 1,868

US 26

Fair

Over: Leclair Canal No 2

Diversion D Jt - Riverton, Fremont, WY

Built 1978 Load: 28.1 t ADT: 5,263

Culbertson Avenue

Fair

Over: Lower Hanover Canal

City Of Worland, Washakie, WY

Built 1950 Load: 28.1 t ADT: 638

La Cnty Rd 220-1

Fair

Over: I-25

Cheyenne - Chugwater, Laramie, WY

Built 1970 Load: 28.4 t ADT: 79

I-25 NBL

Fair

Over: BNSF Railway

Douglas Marginal, Converse, WY

Built 1967 Load: 28.4 t ADT: 3,618

I-25 NBL

Fair

Over: Machinery Pass

Douglas - Casper, Converse, WY

Built 1966 Load: 28.4 t ADT: 4,193

I-25 NBL

Fair

Over: Machinery Pass

Buffalo Marginal, Johnson, WY

Built 1963 Load: 28.4 t ADT: 2,029

I-25 SBL

Fair

Over: Machinery Pass

Buffalo Marginal, Johnson, WY

Built 1963 Load: 28.4 t ADT: 1,717

I-80 WBL

Fair

Over: UPRR / US 30

Cheyenne Marginal, Laramie, WY

Built 1963 Load: 28.4 t ADT: 8,144

I-90 EBL

Fair

Over: Jo CR 204 (TW Road)

Buffalo - Gillette, Johnson, WY

Built 1959 Load: 28.4 t ADT: 2,127

I-90 WBL

Fair

Over: Jo CR 204 (TW Road)

Buffalo - Gillette, Johnson, WY

Built 1959 Load: 28.4 t ADT: 2,077

I-90 EBL

Fair

Over: Jo CR 204A (Dry Creek)

Buffalo - Gillette, Johnson, WY

Built 1960 Load: 28.4 t ADT: 2,080

I-90 WBL

Fair

Over: Jo CR 204A (Dry Creek)

Buffalo - Gillette, Johnson, WY

Built 1960 Load: 28.4 t ADT: 2,000

I-90 EBL

Fair

Over: CR 216 (Beaver Creek Rd)

Moorcroft - Sundance, Crook, WY

Built 1960 Load: 28.4 t ADT: 2,134

I-90 WBL

Fair

Over: CR 216 (Beaver Creek Rd)

Moorcroft - Sundance, Crook, WY

Built 1960 Load: 28.4 t ADT: 1,900

FDR

Fair

Over: LODGEPOLE CREEK

CRANDALL RANGER STATION, Park, WY

Built 1991 Load: 28.5 t ADT: 50

FOREST ROAD 10046

Fair

Over: SOUTH COTTONWOOD CREEK

NO DATA ENTERED, Sublette, WY

Built 1984 Load: 28.5 t ADT: 20

I-90 EBL

Fair

Over: Arch Creek

Moorcroft - Sundance, Crook, WY

Built 1963 Load: 28.8 t ADT: 2,063

I-90 WBL

Fair

Over: Arch Creek

Moorcroft - Sundance, Crook, WY

Built 1963 Load: 28.8 t ADT: 1,833

US 310

Fair

Over: Shoshone River

Lovell - Deaver, Big Horn, WY

Built 1965 Load: 28.8 t ADT: 4,191

US 87 Bus

Fair

Over: Wheatland Canal No 2

Wheatland Streets, Platte, WY

Built 1996 Load: 28.8 t ADT: 3,432

U.S. ROUTE 89

Fair

Over: PILGRIM CREEK

7.9 miles northwest of Mo, Teton, WY

Built 1961 Load: 29.0 t ADT: 5,000

FIREHOLE LAKE DRIV

Fair

Over: THERMAL AREA DRAINAGE

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

Built 1935 Load: 29.0 t ADT: 1,500

La Cnty Rd 228-2

Fair

Over: I-25

Cheyenne - Chugwater, Laramie, WY

Built 1967 Load: 29.0 t ADT: 79

Showing 451-500 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.