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

US 14

Good

Over: Potato Draw

Greybull - Burgess Jct, Big Horn, WY

Built 2003 Load: 46.3 t ADT: 824

WYO 339

Good

Over: I-90

Montana Line - Sheridan, Sheridan, WY

Built 2004 Load: 46.3 t ADT: 233

Wa Cnty Rd 47

Good

Over: Nowood River

Ten Sleep - Manderson, Washakie, WY

Built 2008 Load: 46.3 t ADT: 523

WYO 190

Good

Over: Red Fork Powder River

Kaycee-Barnum Road, Johnson, WY

Built 2007 Load: 46.3 t ADT: 216

Ln Cnty Rd 197S

Good

Over: Stump Creek

2 Mi West Of Auburn, Lincoln, WY

Built 2008 Load: 46.3 t ADT: 120

Sw Cnty Rd 28

Good

Over: Means Canal

9 Mi Ne Of Farson, Sweetwater, WY

Built 2009 Load: 46.3 t ADT: 113

US 310

Good

Over: Sage Creek

Lovell - Deaver, Big Horn, WY

Built 2019 Load: 46.3 t ADT: 2,230

Pa Cnty Rd 6OS

Good

Over: Cody Canal

Apx 12 Miles SW of Cody, Park, WY

Built 2019 Load: 46.3 t ADT: 78

WYO 372

Good

Over: Shute Creek

Green River - Fontenelle, Sweetwater, WY

Built 1961 Load: 46.4 t ADT: 166

Wa Cnty Rd 82

Good

Over: Nowood River

27.5 Mi. S Of Tensleep, Washakie, WY

Built 2002 Load: 46.8 t ADT: 59

Na Cnty Rd 131

Good

Over: Salt Creek

Midwest, Natrona, WY

Built 2012 Load: 46.8 t ADT: 596

EAST ENTRANCE ROAD

Good

Over: SEDGE CREEK

18.4 MI. WEST OF EAST ENT, Teton, WY

Built 1997 Load: 47.2 t ADT: 1,286

WYO 130

Good

Over: North Platte River

8 Mi Se Of Saratoga, Carbon, WY

Built 2002 Load: 47.2 t ADT: 741

Fr Cnty Rd 283A

Good

Over: Big Wind River

2 M. W. Of Dwntn Dubois, Fremont, WY

Built 1998 Load: 47.2 t ADT: 411

WYO 271

Good

Over: Lance Creek

.17 Mi West Of Lance Cree, Niobrara, WY

Built 2003 Load: 47.2 t ADT: 39

US 20

Good

Over: Big Horn Canal

Worland South, Washakie, WY

Built 2006 Load: 47.2 t ADT: 3,153

I25/US20-26-87 Bus

Good

Over: North Platte River

Douglas Streets, Converse, WY

Built 2009 Load: 47.2 t ADT: 8,748

Go Cnty Rd 10

Good

Over: Bear Creek

17 Mi West Of Lagrange, Goshen, WY

Built 2009 Load: 47.2 t ADT: 9

I-80 EBL

Good

Over: Baxter Road

Rock Springs - Rawlins, Sweetwater, WY

Built 2022 Load: 47.6 t ADT: 7,088

Cr Cnty Rd 6

Good

Over: Belle Fourche River

6 Mi Sw Of Hulett, Crook, WY

Built 2002 Load: 47.7 t ADT: 81

I-80 WBL

Good

Over: North Platte River

Rawlins - Laramie, Carbon, WY

Built 2002 Load: 48.1 t ADT: 6,418

I-80 EBL

Good

Over: East Green River Intg

Green River Marginal, Sweetwater, WY

Built 2002 Load: 48.1 t ADT: 11,274

WYO 316

Good

Over: Chugwater Creek

Antelope Gap Road, Platte, WY

Built 2003 Load: 48.1 t ADT: 289

Pa Cnty Rd YXD

Good

Over: S Fork Shoshone River

34 Mi Sw Of Cody, Park, WY

Built 2009 Load: 48.1 t ADT: 128

Wa Cnty Rd 211

Good

Over: Hanover Canal

2 Mi Ne Of Winchester, Washakie, WY

Built 2008 Load: 48.1 t ADT: 8

Ni Cnty Rd 11

Good

Over: Lance Creek

12 Mi SW of mule Crk Jct, Niobrara, WY

Built 2017 Load: 48.3 t ADT: 33

I-90 EBL

Good

Over: BNSF / Higby Road

Sheridan Marginal, Sheridan, WY

Built 2018 Load: 48.3 t ADT: 3,609

I-90 WBL

Good

Over: BNSF / Higby Road

Sheridan Marginal, Sheridan, WY

Built 2017 Load: 48.3 t ADT: 3,907

Go Cnty Rd 33F

Good

Over: Willy Draw

1.7 Mi N.E. of Lingle, Goshen, WY

Built 2019 Load: 48.4 t ADT: 168

GRAND LOOP ROAD

Good

Over: ISA LAKE

9.8 MI. NW OF WEST THUMB, Teton, WY

Built 2015 Load: 49.0 t ADT: 1,807

Ln Cnty Rd 406

Good

Over: Cottonwood Creek

1 Mile West Of Smoot, Lincoln, WY

Built 1998 Load: 49.0 t ADT: 120

US 30

Good

Over: Medicine Bow River

Medicine Bow-Laramie, Carbon, WY

Built 2009 Load: 49.0 t ADT: 840

Jo Cnty Rd 265

Good

Over: N F Crazy Woman Creek

20 Mi S Of Buffalo, Johnson, WY

Built 2006 Load: 49.0 t ADT: 34

Co Cnty Rd 5

Good

Over: Labonte Creek

13 Mi South Of Douglas, Converse, WY

Built 2006 Load: 49.0 t ADT: 50

I-80 WBL

Good

Over: La CR 164-1 (Beech St)

Cheyenne - Nebraska Line, Laramie, WY

Built 2015 Load: 49.6 t ADT: 3,819

I-80 Bus

Good

Over: I-80

Laramie Marginal, Albany, WY

Built 2023 Load: 49.6 t ADT: 5,712

West River Lane

Good

Over: Big Horn Canal

6 Miles N. Of Worland, Washakie, WY

Built 1995 Load: 49.9 t ADT: 37

Sh Cnty Rd 93

Good

Over: Tongue River

4 Mi. E. Of Ranchester, Sheridan, WY

Built 2003 Load: 49.9 t ADT: 72

Ln Cnty Rd 128

Good

Over: Willow Creek

4.5 Mi North Of Auburn, Lincoln, WY

Built 1998 Load: 49.9 t ADT: 251

WYO 271

Good

Over: Little Lightning Creek

3 Mi West Of Lance Creek, Niobrara, WY

Built 2003 Load: 49.9 t ADT: 39

Gravel road

Good

Over: Dam spillway

Big Sandy Dam N of Farson, Sweetwater, WY

Built 1952 Load: 50.4 t ADT: 20

WYO 59

Good

Over: Elk Creek

Gillette - Mont Line, Campbell, WY

Built 2019 Load: 50.5 t ADT: 543

WYO 130

Good

Over: Little Laramie River

Laramie - Jct WYO 230, Albany, WY

Built 1979 Load: 50.8 t ADT: 1,375

I-25 NBL

Good

Over: South Fork Castle Creek

Casper - Kaycee, Natrona, WY

Built 1981 Load: 50.8 t ADT: 1,515

I-25 SBL

Good

Over: South Fork Castle Creek

Casper - Kaycee, Natrona, WY

Built 1981 Load: 50.8 t ADT: 1,464

WYO 59

Good

Over: Little Powder River

Gillette - Montana Sta, Campbell, WY

Built 2005 Load: 50.8 t ADT: 1,333

S 2nd Street

Good

Over: M Fork Popo Agie River

Lander Streets, Fremont, WY

Built 2004 Load: 50.8 t ADT: 1,790

Ln Cnty Rd 143

Good

Over: Crow Creek

1 Mi West Of Fairview, Lincoln, WY

Built 1999 Load: 50.8 t ADT: 120

Ln Cnty Rd 140

Good

Over: Salt River

1.5 Miles West Of Smoot, Lincoln, WY

Built 2006 Load: 50.8 t ADT: 678

I-25 NBL

Good

Over: WYO 258 (Wyoming Blvd)

Casper Marginal, Natrona, WY

Built 2006 Load: 50.8 t ADT: 5,945

Showing 2,801-2,850 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.