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-90 WBL

Fair

Over: WYO 50 (Skyline Drive)

Gillette Marginal, Campbell, WY

Built 1970 Load: 32.7 t ADT: 4,594

US 14

Fair

Over: Belle Fourche River

Moorcroft - Sundance, Crook, WY

Built 1952 Load: 32.7 t ADT: 1,041

WYO 51

Fair

Over: Unnamed Draw

Gillette - Moorcroft, Campbell, WY

Built 1952 Load: 32.7 t ADT: 1,452

I-90 EBL

Fair

Over: Cl CR 40 (Grey Road)

Gillette - Moorcroft, Campbell, WY

Built 1971 Load: 32.7 t ADT: 3,173

I-90 WBL

Fair

Over: Cl CR 40 (Grey Road)

Gillette - Moorcroft, Campbell, WY

Built 1971 Load: 32.7 t ADT: 3,020

I-90 EBL

Fair

Over: Machinery Pass

Gillette - Moorcroft, Crook, WY

Built 1969 Load: 32.7 t ADT: 3,173

I-90 WBL

Fair

Over: Machinery Pass

Gillette - Moorcroft, Crook, WY

Built 1969 Load: 32.7 t ADT: 3,020

I-90 EBL

Fair

Over: Belle Fourche River

Gillette - Moorcroft, Crook, WY

Built 1966 Load: 32.7 t ADT: 2,627

I-90 WBL

Fair

Over: Belle Fourche River

Gillette - Moorcroft, Crook, WY

Built 1966 Load: 32.7 t ADT: 2,564

I-90 EBL

Fair

Over: I-90 Bus

Moorcroft Marginal, Crook, WY

Built 1962 Load: 32.7 t ADT: 2,133

I-90 WBL

Fair

Over: I-90 Bus.

Moorcroft Marginal, Crook, WY

Built 1962 Load: 32.7 t ADT: 1,928

I-90 EBL and WBL

Fair

Over: Mule Creek

Moorcroft - Sundance, Crook, WY

Built 1962 Load: 32.7 t ADT: 2,063

I-90 EBL

Fair

Over: Inyan Kara Creek Road

Moorcroft - Sundance, Crook, WY

Built 1961 Load: 32.7 t ADT: 2,063

I-90 WBL

Fair

Over: Inyan Kara Creek Road

Moorcroft - Sundance, Crook, WY

Built 1961 Load: 32.7 t ADT: 1,833

I-90 EBL and WBL

Fair

Over: Unnamed Draw

Moorcroft - Sundance, Crook, WY

Built 1965 Load: 32.7 t ADT: 2,385

WYO 374

Fair

Over: Unnamed Draw

Jct I-80 - Green River, Sweetwater, WY

Built 1946 Load: 32.7 t ADT: 558

WYO 59

Fair

Over: Unnamed Draw

Gillette - Mont Line, Campbell, WY

Built 1954 Load: 32.7 t ADT: 543

WYO 116 N

Fair

Over: S Fork Sundance Creek

Sundance - Upton, Crook, WY

Built 1948 Load: 32.7 t ADT: 546

US 89

Fair

Over: Etna Irrigation Canal

Afton - Alpine Jct, Lincoln, WY

Built 1969 Load: 32.7 t ADT: 6,794

US 89

Fair

Over: Fall Creek

Alpine Jct - Hoback Jct, Teton, WY

Built 1950 Load: 32.7 t ADT: 5,455

US 30

Fair

Over: Stockpass / Sublette Crk

Border Jct - Sage Jct, Lincoln, WY

Built 1951 Load: 32.7 t ADT: 1,905

US 30

Fair

Over: Horse Creek

Border Jct - Sage Jct, Lincoln, WY

Built 1951 Load: 32.7 t ADT: 1,905

US 191

Fair

Over: Muddy Creek

Daniel Jct - Hoback Jct, Sublette, WY

Built 1951 Load: 32.7 t ADT: 1,868

US 191

Fair

Over: Cliff Creek

Daniel Jct _ Hoback Jct, Sublette, WY

Built 1965 Load: 32.7 t ADT: 2,444

US 287

Fair

Over: Squaw Creek

Lander - Diversion Dam Jt, Fremont, WY

Built 1961 Load: 32.7 t ADT: 9,923

US 287

Fair

Over: Twin Creek

Muddy Gap Jct-WYO 28 Jct, Fremont, WY

Built 1972 Load: 32.7 t ADT: 602

WYO 220

Fair

Over: Pete Creek

Muddy Gap Jct-WYO 487 Jct, Carbon, WY

Built 1968 Load: 32.7 t ADT: 1,771

WYO 220

Fair

Over: Horse Creek

Muddy Gap Jct-WYO 487 Jct, Natrona, WY

Built 1970 Load: 32.7 t ADT: 2,285

WYO 220

Fair

Over: Cottonwood Creek

WYO 487 Jct - Casper, Natrona, WY

Built 1965 Load: 32.7 t ADT: 3,604

WYO 220

Fair

Over: BNSF Railway

Casper, Natrona, WY

Built 1969 Load: 32.7 t ADT: 14,551

US 287

Fair

Over: Harney Creek

Laramie - Colo Line, Albany, WY

Built 1958 Load: 32.7 t ADT: 4,624

US 85

Fair

Over: Lone Tree Creek

Cheyenne - Torrington, Goshen, WY

Built 1970 Load: 32.7 t ADT: 2,075

US 85

Fair

Over: Springer Canal

Cheyenne - Torrington, Goshen, WY

Built 1959 Load: 32.7 t ADT: 2,634

US 85

Fair

Over: Dry Rawhide Creek

Lingle - Lusk, Goshen, WY

Built 1968 Load: 32.7 t ADT: 1,306

WYO 120

Fair

Over: Unnamed Draw

Thermopolis - Cody, Hot Springs, WY

Built 1961 Load: 32.7 t ADT: 1,780

WYO 120

Fair

Over: Spring Creek

Thermopolis - Cody, Park, WY

Built 1970 Load: 32.7 t ADT: 2,015

WYO 120

Fair

Over: Cottonwood Creek

Thermopolis - Cody, Park, WY

Built 1962 Load: 32.7 t ADT: 1,925

WYO 120

Fair

Over: Little Dry Creek

Thermopolis - Cody, Park, WY

Built 1962 Load: 32.7 t ADT: 1,925

WYO 59

Fair

Over: Donkey Creek

Reno Jct - Gillette, Campbell, WY

Built 1975 Load: 32.7 t ADT: 22,301

US 20

Fair

Over: South Fork Powder River

Casper - Shoshoni, Natrona, WY

Built 1973 Load: 32.7 t ADT: 2,446

I-25 NBL and SBL

Fair

Over: Rock Creek

Chugwater - Wheatland, Platte, WY

Built 1975 Load: 32.7 t ADT: 3,458

US 20

Fair

Over: Bad Water Creek

Shoshoni - Thermopolis, Fremont, WY

Built 1970 Load: 32.7 t ADT: 2,615

US 20

Fair

Over: Red Lane Draw

Thermopolis - Worland, Hot Springs, WY

Built 1976 Load: 32.7 t ADT: 2,726

US 20

Fair

Over: Unnamed Draw

Thermopolis - Worland, Hot Springs, WY

Built 1956 Load: 32.7 t ADT: 1,919

US 20

Fair

Over: Unnamed Draw

Thermopolis - Worland, Hot Springs, WY

Built 1954 Load: 32.7 t ADT: 1,593

US 16

Fair

Over: Dobie Creek

Worland - Basin, Big Horn, WY

Built 1957 Load: 32.7 t ADT: 2,122

US 16

Fair

Over: Antelope Creek

Worland - Basin, Big Horn, WY

Built 1957 Load: 32.7 t ADT: 2,122

US 16

Fair

Over: Greybull River

Basin - Greybull, Big Horn, WY

Built 1955 Load: 32.7 t ADT: 3,295

US 14

Fair

Over: Shell Creek

Greybull - Burgess Jct, Big Horn, WY

Built 1966 Load: 32.7 t ADT: 511

US 18

Fair

Over: Watkins Draw

Orin Jct - Lusk, Converse, WY

Built 1964 Load: 32.7 t ADT: 2,101

Showing 901-950 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.