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

WYO 220

Fair

Over: Rush Creek

Muddy Gap Jct-WYO 487 Jct, Natrona, WY

Built 1968 Load: 33.6 t ADT: 1,771

WYO 220

Fair

Over: Bates Creek

Muddy Gap Jct-WYO 487 Jct, Natrona, WY

Built 1963 Load: 33.6 t ADT: 3,066

US 85

Fair

Over: Fort Laramie Canal

Cheyenne - Torrington, Goshen, WY

Built 1959 Load: 33.6 t ADT: 2,075

US 85

Fair

Over: Interstate Canal

Lingle - Lusk, Goshen, WY

Built 1955 Load: 33.6 t ADT: 1,306

US 85

Fair

Over: Six Mile Creek

Lingle - Lusk, Goshen, WY

Built 1974 Load: 33.6 t ADT: 1,306

US 20

Fair

Over: Sand Draw

Thermopolis - Worland, Hot Springs, WY

Built 1948 Load: 33.6 t ADT: 1,593

US 310

Fair

Over: Sage Creek

Lovell - Deaver, Big Horn, WY

Built 1973 Load: 33.6 t ADT: 1,834

US 16

Fair

Over: Turner Creek

Upton - Newcastle, Weston, WY

Built 1971 Load: 33.6 t ADT: 1,673

WYO 238

Fair

Over: Salt River

Jct WYO 89 - Auburn, Lincoln, WY

Built 1964 Load: 33.6 t ADT: 811

WYO 337

Fair

Over: Goose Creek

Ft Mackenzie Rd Sheridan, Sheridan, WY

Built 1971 Load: 33.6 t ADT: 3,143

WYO 430

Fair

Over: North Alkali Creek

Rock Springs - Colo Line, Sweetwater, WY

Built 1956 Load: 33.6 t ADT: 243

I-90 EBL

Fair

Over: WYO 59

Gillette Marginal, Campbell, WY

Built 1971 Load: 33.6 t ADT: 3,744

I-25 NBL

Fair

Over: Pl CR 211 (Elkhorn Crk)

Glendo - Douglas, Platte, WY

Built 1973 Load: 33.6 t ADT: 3,471

I-25 NBL

Fair

Over: Elkhorn Creek

Glendo - Douglas, Platte, WY

Built 1973 Load: 33.6 t ADT: 3,471

I-25 SBL

Fair

Over: Elkhorn Creek

Glendo - Douglas, Platte, WY

Built 1973 Load: 33.6 t ADT: 3,318

I-90 EBL

Fair

Over: Machinery Pass

Gillette - Moorcroft, Campbell, WY

Built 1974 Load: 33.6 t ADT: 3,173

I-90 WBL

Fair

Over: Machinery Pass

Gillette - Moorcroft, Campbell, WY

Built 1974 Load: 33.6 t ADT: 3,020

WYO 789

Fair

Over: Beaver Creek

Lander - Riverton, Fremont, WY

Built 1976 Load: 33.6 t ADT: 3,514

US 18

Fair

Over: Shawnee Creek

Orin Jct - Lusk, Converse, WY

Built 1977 Load: 33.6 t ADT: 2,101

I-25 NBL

Fair

Over: Middle Fork Bear Creek

Cheyenne - Chugwater, Laramie, WY

Built 1977 Load: 33.6 t ADT: 3,271

I-25 SBL

Fair

Over: Middle Fork Bear Creek

Cheyenne - Chugwater, Laramie, WY

Built 1977 Load: 33.6 t ADT: 3,277

US 20

Fair

Over: Casper Creek

Casper, Natrona, WY

Built 1977 Load: 33.6 t ADT: 11,513

US 85

Fair

Over: Rawhide Creek

Lingle - Lusk, Goshen, WY

Built 1980 Load: 33.6 t ADT: 1,306

I-25 SBL

Fair

Over: Castle Creek

Casper - Kaycee, Natrona, WY

Built 1980 Load: 33.6 t ADT: 1,464

I-25 NBL

Fair

Over: Castle Creek

Casper - Kaycee, Natrona, WY

Built 1980 Load: 33.6 t ADT: 1,515

Na Cnty Rd 408

Fair

Over: North Platte River

7.5 Miles S.W. Of Alcova, Natrona, WY

Built 1957 Load: 33.6 t ADT: 83

Bh Cnty Rd 3

Fair

Over: Sage Creek

2.5 Miles E. Of Deaver, Big Horn, WY

Built 1955 Load: 33.6 t ADT: 150

US 14

Fair

Over: North Wildcat Creek

Ucross - Jct WYO 59, Campbell, WY

Built 1983 Load: 33.6 t ADT: 1,318

Bh Cnty Rd R49

Fair

Over: S Fork Paint Rock Creek

Hyattville, Big Horn, WY

Built 1983 Load: 33.6 t ADT: 144

Ni Cnty Rd 13

Fair

Over: Lance Creek

2 Miles N.E. Of Cow Creek, Niobrara, WY

Built 1983 Load: 33.6 t ADT: 17

WYO 34

Fair

Over: Lateral No 1

Bosler Jct-Wheatland, Platte, WY

Built 1983 Load: 33.6 t ADT: 702

US 20

Fair

Over: Middle Fork Casper Creek

Casper-Shoshoni, Natrona, WY

Built 1984 Load: 33.6 t ADT: 2,908

Co Cnty Rd 13

Fair

Over: Laprele Creek

T32N R073W S21, Converse, WY

Built 1985 Load: 33.6 t ADT: 181

WYO 28

Fair

Over: Beaver Creek

Farson-Lander, Fremont, WY

Built 1986 Load: 33.6 t ADT: 1,751

Jo Cnty Rd 40

Fair

Over: Clear Creek

3 Miles N. E. Of Buffalo, Johnson, WY

Built 1986 Load: 33.6 t ADT: 89

Cr Cnty Rd 269

Fair

Over: Little Missouri River

17 Mi N Of Hulett, Crook, WY

Built 1986 Load: 33.6 t ADT: 38

WYO 193

Fair

Over: North Piney Creek

Banner-Story, Sheridan, WY

Built 1986 Load: 33.6 t ADT: 1,510

WYO 196

Fair

Over: Muddy Creek

Kaycee-Buffalo, Johnson, WY

Built 1989 Load: 33.6 t ADT: 51

WYO 196

Fair

Over: N F Crazy Woman Creek

Kaycee-Buffalo, Johnson, WY

Built 1989 Load: 33.6 t ADT: 51

Ui Cnty Rd 204

Fair

Over: Grove Canal

6 Mi. S.E. Of Piedmont, Uinta, WY

Built 1985 Load: 33.6 t ADT: 71

Cr Cnty Rd 200

Fair

Over: Little Missouri River

21 Mi Nne Of Hulett, Crook, WY

Built 1988 Load: 33.6 t ADT: 51

Ln Cnty Rd 207

Fair

Over: Bear River

1 Mile S.W. Of Cokeville, Lincoln, WY

Built 1989 Load: 33.6 t ADT: 359

Sh Cnty Rd 269

Fair

Over: Powder River

16 Miles N. Of Arvada, Sheridan, WY

Built 1989 Load: 33.6 t ADT: 121

WYO 296

Fair

Over: Dead Indian Creek

Clarks Fork Road, Park, WY

Built 1989 Load: 33.6 t ADT: 393

WYO 70

Fair

Over: Ledford Slough

Baggs-Encampment Road, Carbon, WY

Built 1991 Load: 33.6 t ADT: 835

Cr Cnty Rd 164

Fair

Over: Little Missouri River

7 Mi N. Of Oshoto, Crook, WY

Built 1990 Load: 33.6 t ADT: 25

Wa Cnty Rd L15

Fair

Over: Big Horn Canal

2-3 Miles S.W Of Worland, Washakie, WY

Built 1992 Load: 33.6 t ADT: 21

US 191

Fair

Over: New Fork River

Pinedale-Daniel Jct, Sublette, WY

Built 1993 Load: 33.6 t ADT: 2,924

WYO 59

Fair

Over: S Fork Cheyenne River

Douglas-Reno Jct, Converse, WY

Built 1994 Load: 33.6 t ADT: 1,727

Na Cnty Rd 201

Fair

Over: Poison Spider Creek

11 Miles West Of Casper, Natrona, WY

Built 1991 Load: 33.6 t ADT: 937

Showing 1,251-1,300 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.