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

River Bend Drive

Fair

Over: Smiths Fork River

Mountain View Streets, Uinta, WY

Built 1998 Load: 41.7 t ADT: 762

Pl Cnty Rd 269

Fair

Over: Chugwater Creek

5 Mi. S.E. Of Wheatland, Platte, WY

Built 1998 Load: 41.7 t ADT: 18

2nd Avenue

Fair

Over: Swift Creek

3 Mi Ne Of Afton, Lincoln, WY

Built 2004 Load: 41.7 t ADT: 198

WYO 236

Fair

Over: Salt River

Fairview Road, Lincoln, WY

Built 1984 Load: 41.8 t ADT: 1,090

I-80 WBL

Fair

Over: Ui CR 202(Bigelow Bench)

Evanston - Green River, Uinta, WY

Built 1959 Load: 42.1 t ADT: 6,946

WYO 150

Fair

Over: Mill Creek

Evanston - South Road, Uinta, WY

Built 2004 Load: 42.1 t ADT: 833

US 16

Fair

Over: Nowood River

Worland - Tensleep, Washakie, WY

Built 2015 Load: 42.1 t ADT: 1,928

I-80 EBL

Fair

Over: West Green River Intg

Green River Marginal, Sweetwater, WY

Built 1995 Load: 42.3 t ADT: 7,619

Co Cnty Rd 27

Fair

Over: North Platte River

7 Mi East Of Glenrock, Converse, WY

Built 2009 Load: 42.3 t ADT: 147

Wa Cnty Rd 58

Fair

Over: Otter Creek

14 Mi Se Of Tensleep, Washakie, WY

Built 2002 Load: 42.5 t ADT: 8

I-90 EBL

Fair

Over: US 14

Sundance Marginal, Crook, WY

Built 1969 Load: 42.6 t ADT: 2,385

I-90 WBL

Fair

Over: US 14

Sundance Marginal, Crook, WY

Built 1969 Load: 42.6 t ADT: 2,416

I-90/US 14/87 Bus

Fair

Over: Little Goose Creek

Sheridan N Main Street, Sheridan, WY

Built 1954 Load: 42.6 t ADT: 11,274

US 20

Fair

Over: Wyatt Draw

Casper - Shoshoni, Natrona, WY

Built 1973 Load: 42.6 t ADT: 2,446

WYO 59

Fair

Over: Hay Creek

Reno Jct - Gillette, Campbell, WY

Built 1977 Load: 42.6 t ADT: 5,017

WYO 34

Fair

Over: Sybille Creek

Bosler Jct - Wheatland, Platte, WY

Built 1983 Load: 42.6 t ADT: 1,287

I-80 Bus

Fair

Over: Bear River

Evanston Streets, Uinta, WY

Built 1984 Load: 42.6 t ADT: 5,995

Go Cnty Rd 25C

Fair

Over: Fort Laramie Canal

6 Miles N.W. Of Yoder, Goshen, WY

Built 1993 Load: 42.6 t ADT: 68

Go Cnty Rd 47B

Fair

Over: Cherry Creek Drainage

2.5 Mi S.W Of Torrington, Goshen, WY

Built 1993 Load: 42.6 t ADT: 68

Go Cnty Rd 124

Fair

Over: Rawhide Creek

Jay Em, Goshen, WY

Built 1993 Load: 42.6 t ADT: 31

I-80 EBL On Ramp

Fair

Over: I-80

Evanston - Green River, Sweetwater, WY

Built 1992 Load: 42.6 t ADT: 918

WYO 173

Fair

Over: Big Horn River

4 Mi S. Of Thermopolis, Hot Springs, WY

Built 1992 Load: 42.6 t ADT: 195

US 26

Fair

Over: Rawhide Creek

Torrington-Lingle, Goshen, WY

Built 1997 Load: 42.6 t ADT: 5,215

WYO 259

Fair

Over: East Teapot Creek

Casper-Midwest Road, Natrona, WY

Built 1999 Load: 42.6 t ADT: 3,812

Fr Cnty Rd 239

Fair

Over: Big Wind River

3 Mi Se Of Dubois, Fremont, WY

Built 2002 Load: 42.6 t ADT: 198

Sw Cnty Rd 23S

Fair

Over: UPRR

Wamsutter Streets, Sweetwater, WY

Built 2003 Load: 42.6 t ADT: 784

US 20

Fair

Over: Fifteen Mile Creek

P-34 Worland South, Washakie, WY

Built 2006 Load: 42.6 t ADT: 3,153

I-25 NBL

Fair

Over: Sunflower Trail

Douglas - Casper, Converse, WY

Built 1958 Load: 43.1 t ADT: 4,684

I-25 SBL

Fair

Over: Sunflower Trail

Douglas - Casper, Converse, WY

Built 1958 Load: 43.1 t ADT: 5,469

I-25 SBL

Fair

Over: Natural Bridge Road

Douglas - Casper, Converse, WY

Built 1958 Load: 43.1 t ADT: 5,469

I-25 NBL

Fair

Over: Natural Bridge Road

Douglas - Casper, Converse, WY

Built 1958 Load: 43.1 t ADT: 4,684

I-25 NBL

Fair

Over: Little Boxelder Creek

Douglas - Casper, Converse, WY

Built 1958 Load: 43.1 t ADT: 4,684

I-25 SBL

Fair

Over: Little Boxelder Creek

Douglas - Casper, Converse, WY

Built 1958 Load: 43.1 t ADT: 5,469

I-25 NBL

Fair

Over: Bixby Road

Douglas - Casper, Converse, WY

Built 1958 Load: 43.1 t ADT: 4,684

I-25 SBL

Fair

Over: Bixby Road

Douglas - Casper, Converse, WY

Built 1958 Load: 43.1 t ADT: 5,469

Hot Springs Blvd

Fair

Over: Warm Springs Creek

T43N R95W S36, Hot Springs, WY

Built 1989 Load: 43.1 t ADT: 164

WYO 257

Fair

Over: North Platte River

Casper Streets, Natrona, WY

Built 2013 Load: 43.1 t ADT: 1,066

I-80 WBL

Fair

Over: West Green River Intg

Green River Marginal, Sweetwater, WY

Built 1995 Load: 43.2 t ADT: 9,240

U.S. ROUTE 89

Fair

Over: SNAKE RIVER

2 miles south of North En, Teton, WY

Built 1950 Load: 43.5 t ADT: 5,000

I-90 EBL

Fair

Over: 4-J Road

Gillette Marginal, Campbell, WY

Built 1970 Load: 43.5 t ADT: 3,744

I-90 WBL

Fair

Over: 4-J Road

Gillette Marginal, Campbell, WY

Built 1970 Load: 43.5 t ADT: 3,585

WYO 51

Fair

Over: BNSF Railway

Gillette - Moorcroft, Campbell, WY

Built 1980 Load: 43.5 t ADT: 1,452

US 26

Fair

Over: Long Creek

Moran Jct-Dubois, Fremont, WY

Built 1989 Load: 43.5 t ADT: 2,037

Pa Cnty Rd 6KV

Fair

Over: N Fork Shoshone River

15 Miles West Of Cody, Park, WY

Built 1990 Load: 43.5 t ADT: 266

US 26

Fair

Over: Haymaker Draw

2.6 Mile N. Of Riverton, Fremont, WY

Built 1988 Load: 43.5 t ADT: 5,796

Sb Cnty Rd 162

Fair

Over: New Fork River

11 Miles North Of Cora, Sublette, WY

Built 1989 Load: 43.5 t ADT: 86

US 85

Fair

Over: North Platte River

Torrington South Road, Goshen, WY

Built 1994 Load: 43.5 t ADT: 6,899

WYO 412

Fair

Over: Big Muddy Creek

.5 Mi South Of Carter, Uinta, WY

Built 2002 Load: 43.5 t ADT: 503

Na Cnty Rd 403

Fair

Over: Bolton Creek

20 Mi. S.W. Of Casper, Natrona, WY

Built 1994 Load: 43.5 t ADT: 2

WYO 30

Fair

Over: Greybull River

Basin - Jct 14/16/20, Big Horn, WY

Built 2001 Load: 43.5 t ADT: 868

Showing 1,751-1,800 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.