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: I-25 Service Road

Casper - Kaycee, Johnson, WY

Built 1965 Load: 34.9 t ADT: 1,439

WYO 28

Fair

Over: Sweetwater River

Farson - Jct Us 287, Fremont, WY

Built 1981 Load: 34.9 t ADT: 1,382

NFSR 550

Fair

Over: N.F. ENCAMPMENT RIVER

2.05 MI S of SH 70, Carbon, WY

Built 1967 Load: 35.0 t ADT: 50

I-25 SBL

Fair

Over: Laprele Creek

Douglas - Casper, Converse, WY

Built 1958 Load: 35.3 t ADT: 5,476

I-90 EBL

Fair

Over: Jo CR 39 (Lake Ridge Rd)

Sheridan - Buffalo, Johnson, WY

Built 1966 Load: 35.3 t ADT: 3,771

I-90 WBL

Fair

Over: Jo CR 213 (Monument Rd)

Sheridan - Buffalo, Johnson, WY

Built 1966 Load: 35.3 t ADT: 3,768

I-90 EBL

Fair

Over: Lower Powder River Road

Buffalo - Gillette, Johnson, WY

Built 1961 Load: 35.3 t ADT: 1,820

I-90 WBL

Fair

Over: Lower Powder River Road

Buffalo - Gillette, Johnson, WY

Built 1961 Load: 35.3 t ADT: 1,833

WYO 211

Fair

Over: I-25

Cheyenne Marginal, Laramie, WY

Built 1961 Load: 35.3 t ADT: 2,414

Na Cnty Rd 407

Fair

Over: North Platte River

Alcova, Natrona, WY

Built 2019 Load: 35.3 t ADT: 63

U.S. ROUTE 89

Fair

Over: GROS VENTRE IRRIGATION D

6.3 miles north of Jackso, Teton, WY

Built 1963 Load: 35.4 t ADT: 8,000

CLIMBERS RANCH ROA

Fair

Over: COTTONWOOD CREEK

4.3 miles northwest of Mo, Teton, WY

Built 2005 Load: 35.4 t ADT: 30

I-25 NBL

Fair

Over: Laramie River Road

Wheatland - Glendo, Platte, WY

Built 1966 Load: 35.4 t ADT: 3,312

I-25 SBL

Fair

Over: Laramie River Road

Wheatland - Glendo, Platte, WY

Built 1966 Load: 35.4 t ADT: 3,390

I-25 NBL

Fair

Over: East Johnson Road

Wheatland - Glendo, Platte, WY

Built 1966 Load: 35.4 t ADT: 3,312

I-25 SBL

Fair

Over: East Johnson Road

Wheatland - Glendo, Platte, WY

Built 1966 Load: 35.4 t ADT: 3,390

I-25 SBL

Fair

Over: WYO 94 (Esterbrook Rd)

Douglas Marginal, Converse, WY

Built 1966 Load: 35.4 t ADT: 4,292

I-25 NBL

Fair

Over: South Main Street

Buffalo Marginal, Johnson, WY

Built 1971 Load: 35.4 t ADT: 1,876

I-80 EBL

Fair

Over: CR 347S /Savage Ranch Rd

Rawlins - Laramie, Carbon, WY

Built 1964 Load: 35.4 t ADT: 6,399

I-80 WBL

Fair

Over: CR 347S /Savage Ranch Rd

Rawlins - Laramie, Carbon, WY

Built 1964 Load: 35.4 t ADT: 6,448

I-80 EBL

Fair

Over: Machinery Pass

Rawlins - Laramie, Carbon, WY

Built 1964 Load: 35.4 t ADT: 6,360

I-80 WBL

Fair

Over: UPRR

Laramie - Cheyenne, Laramie, WY

Built 1958 Load: 35.4 t ADT: 6,639

WYO 345

Fair

Over: Five Mile Creek

Montana Line - Sheridan, Sheridan, WY

Built 1952 Load: 35.4 t ADT: 500

I-90 EBL

Fair

Over: BNSF Railway

Sheridan Marginal, Sheridan, WY

Built 1962 Load: 35.4 t ADT: 4,669

I-90 WBL

Fair

Over: BNSF Railway

Sheridan Marginal, Sheridan, WY

Built 1962 Load: 35.4 t ADT: 5,095

I-90 EBL

Fair

Over: Lower Piney Creek Road

Sheridan - Buffalo, Johnson, WY

Built 1966 Load: 35.4 t ADT: 3,577

I-90 WBL

Fair

Over: Lower Piney Creek Road

Sheridan - Buffalo, Johnson, WY

Built 1966 Load: 35.4 t ADT: 3,758

I-90 EBL

Fair

Over: US 14

Moorcroft Marginal, Crook, WY

Built 1966 Load: 35.4 t ADT: 2,133

I-90 WBL

Fair

Over: US 14

Moorcroft Marginal, Crook, WY

Built 1966 Load: 35.4 t ADT: 1,928

I-25 NBL

Fair

Over: WYO 312 (South Street)

Wheatland Marginal, Platte, WY

Built 1975 Load: 35.4 t ADT: 3,243

I-25 SBL

Fair

Over: WYO 312 (South Street)

Wheatland Marginal, Platte, WY

Built 1975 Load: 35.4 t ADT: 3,320

WYO 411

Fair

Over: Blacks Fork River

Mountain View - Milburne, Uinta, WY

Built 1966 Load: 35.4 t ADT: 737

WYO 487

Fair

Over: Medicine Bow River

Medicine Bow, Carbon, WY

Built 1959 Load: 35.4 t ADT: 652

5th Street

Fair

Over: Big Goose Creek

5th St. - Sheridan, Sheridan, WY

Built 1968 Load: 35.4 t ADT: 9,192

WYO 258 (Wyo Blvd)

Fair

Over: North Platte River

Casper, Natrona, WY

Built 1974 Load: 35.4 t ADT: 11,674

WYO 789

Fair

Over: Rogers/Gregg Ditch

Lander - Riverton, Fremont, WY

Built 1976 Load: 35.4 t ADT: 3,514

US 89

Fair

Over: Dry Creek

Idaho Line - Afton, Lincoln, WY

Built 1975 Load: 35.4 t ADT: 2,336

US 14

Fair

Over: Spotted Horse Creek

Ucross - Jct WYO 59, Campbell, WY

Built 1977 Load: 35.4 t ADT: 492

WYO 387

Fair

Over: Coal Draw

Midwest - Reno Jct, Natrona, WY

Built 1977 Load: 35.4 t ADT: 2,168

WYO 450

Fair

Over: Black Thunder Creek

Newcastle - Jct WYO 59, Weston, WY

Built 1981 Load: 35.4 t ADT: 723

US 26

Fair

Over: Horse Creek

Moran Jct - Dubois, Fremont, WY

Built 1981 Load: 35.4 t ADT: 4,296

I-90 EBL

Fair

Over: Cr CR 108 (Rifle Pit Rd)

Sundance - S Dakota Line, Crook, WY

Built 1977 Load: 35.4 t ADT: 2,665

I-90 WBL

Fair

Over: Cr CR 108 (Rifle Pit Rd)

Sundance - S Dakota Line, Crook, WY

Built 1977 Load: 35.4 t ADT: 2,674

WYO 789

Fair

Over: Little Snake River

Creston Jct - Colo Line, Carbon, WY

Built 1978 Load: 35.4 t ADT: 2,593

WYO 34

Fair

Over: Canal No 3

Bosler Jct - Jct I-25, Platte, WY

Built 1980 Load: 35.4 t ADT: 702

US 14

Fair

Over: N Fork Shoshone River

Yellowstone Park - Cody, Park, WY

Built 1982 Load: 35.4 t ADT: 3,071

High School Road

Fair

Over: Flat Creek

1 Mile S. Of Jackson, Teton, WY

Built 1983 Load: 35.4 t ADT: 4,092

US 189

Fair

Over: Hams Fork River

Kemmerer-Daniel Jct, Lincoln, WY

Built 1983 Load: 35.4 t ADT: 1,277

Jo Cnty Rd 13

Fair

Over: Crazy Woman Creek

8 Miles South Of Buffalo, Johnson, WY

Built 1983 Load: 35.4 t ADT: 75

US 20

Fair

Over: Middle Fork Casper Creek

Casper-Shoshoni, Natrona, WY

Built 1984 Load: 35.4 t ADT: 2,908

Showing 1,401-1,450 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.