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 NBL

Good

Over: I-25 East Service Road

Chugwater - Wheatland, Platte, WY

Built 1970 Load: 30.4 t ADT: 3,098

WYO 12

Good

Over: Unnamed Draw

Jct WYO 130 - Jct I-80, Albany, WY

Built 1953 Load: 30.4 t ADT: 166

Ln Cnty Rd 123

Good

Over: Willow Creek

3 Mi Se Of Bedford, Lincoln, WY

Built 2008 Load: 30.6 t ADT: 120

US 16

Good

Over: Cottonwood Creek

Worland - Buffalo, Washakie, WY

Built 1964 Load: 30.7 t ADT: 1,928

NO DATA ENTERED

Good

Over: GREYS RIVER

NO DATA ENTERED, Lincoln, WY

Built 2010 Load: 30.8 t ADT: 50

I-25 SBL

Good

Over: North Platte River

Douglas Marginal, Converse, WY

Built 1966 Load: 30.8 t ADT: 4,292

I-25 SBL

Good

Over: CR 18 (Mormon Canyon Rd)

Douglas - Casper, Converse, WY

Built 1967 Load: 30.8 t ADT: 4,702

I-25 NBL

Good

Over: Machinery Pass

Douglas - Casper, Converse, WY

Built 1966 Load: 30.8 t ADT: 4,193

I-80 EBL

Good

Over: E F Medicine Bow River

Rawlins - Laramie, Carbon, WY

Built 1969 Load: 30.8 t ADT: 5,745

I-90 WBL

Good

Over: Sh CR 131 (Meade Creek)

Sheridan - Buffalo, Sheridan, WY

Built 1968 Load: 30.8 t ADT: 3,613

I-90 EBL

Good

Over: Inyan Kara Creek

Moorcroft - Sundance, Crook, WY

Built 1961 Load: 30.8 t ADT: 2,063

I-90 WBL

Good

Over: Inyan Kara Creek

Moorcroft - Sundance, Crook, WY

Built 1961 Load: 30.8 t ADT: 1,833

WYO 59

Good

Over: Antelope Creek

Douglas - Reno Jct, Converse, WY

Built 1972 Load: 30.8 t ADT: 2,840

US 16

Good

Over: Whoopup Creek

Newcastle - S Dak Line, Weston, WY

Built 1959 Load: 30.8 t ADT: 1,881

WYO 339

Good

Over: Goose Creek

Jct WYO 338 - Jct I-90, Sheridan, WY

Built 1966 Load: 30.8 t ADT: 233

I-25 SBL

Good

Over: Indian Creek

Glendo - Douglas, Converse, WY

Built 1972 Load: 30.8 t ADT: 3,318

I-25 NBL

Good

Over: I-25 Service Road

Casper - Kaycee, Natrona, WY

Built 1980 Load: 30.8 t ADT: 1,499

WYO 238

Good

Over: West Channel Salt River

Afton-Auburn, Lincoln, WY

Built 1987 Load: 30.8 t ADT: 1,372

Na Cnty Rd 316

Good

Over: Casper Canal

20 Miles Sw Of Casper, Natrona, WY

Built 2003 Load: 30.8 t ADT: 5

Industrial Drive

Good

Over: Killpecker Creek

Rock Springs, Sweetwater, WY

Built 2009 Load: 30.8 t ADT: 1,802

Cl Cnty Rd 26

Good

Over: Cow Creek

22 Miles Ne Of Gillette, Campbell, WY

Built 2009 Load: 30.8 t ADT: 39

Pa Cnty Rd R16

Good

Over: Alkali Creek

1.5 Mi N Of Ralston, Park, WY

Built 2011 Load: 30.8 t ADT: 128

Conroy Street

Good

Over: Hams Fork River

Diamondville, Lincoln, WY

Built 2015 Load: 30.8 t ADT: 120

I-90 EBL

Good

Over: Rock Creek

Sheridan - Buffalo, Johnson, WY

Built 1963 Load: 31.0 t ADT: 2,750

I-90 WBL

Good

Over: Rock Creek

Sheridan - Buffalo, Johnson, WY

Built 1963 Load: 31.0 t ADT: 3,045

Sb Cnty Rd 204

Good

Over: Duck Creek

1 Mile West Of Pinedale, Sublette, WY

Built 1990 Load: 31.0 t ADT: 49

WYO 131

Good

Over: Middle Fork Popo Agie

1.3 Mi Sw Of Sinks Canyon, Fremont, WY

Built 1995 Load: 31.1 t ADT: 1,226

Christensen Road

Good

Over: UPRR

East Edge of Cheyenne, Laramie, WY

Built 2020 Load: 31.1 t ADT: 3,598

NFSR 496

Good

Over: E. FORK ENCAMPMENT RIVER

NO DATA ENTERED, Carbon, WY

Built 1972 Load: 31.4 t ADT: 50

N 4th Street

Good

Over: E Fork Antelope Creek

Douglas, Converse, WY

Built 1967 Load: 31.4 t ADT: 3,333

I-80 WBL

Good

Over: Burlington Trail Road

Cheyenne Marginal, Laramie, WY

Built 1976 Load: 31.4 t ADT: 6,882

W 25th Street

Good

Over: Garden Creek

Casper Streets, Natrona, WY

Built 1960 Load: 31.4 t ADT: 6,586

Fr Cnty Rd 298

Good

Over: Wyoming Canal

5 Mi Nw Of Morton, Fremont, WY

Built 2017 Load: 31.4 t ADT: 26

Fr Cnty Rd 345

Good

Over: N Fork Little Wind River

5 Mi Nw Of Ft Washakie, Fremont, WY

Built 1960 Load: 31.5 t ADT: 168

BEARTOOTH HIGHWAY

Good

Over: FOX CREEK

10.9 MI. EAST OF NE ENTRA, Park, WY

Built 1963 Load: 31.7 t ADT: 1,775

I-80 WBL

Good

Over: Blacks Fork River

Evanston - Green River, Sweetwater, WY

Built 1967 Load: 31.7 t ADT: 7,705

WYO 434

Good

Over: Tensleep Creek

Tensleep - Big Trails, Washakie, WY

Built 1978 Load: 31.7 t ADT: 463

FSR 15

Good

Over: NORTH TONGUE RIVER

1.3 MI ON FSR 15, Sheridan, WY

Built 1970 Load: 31.8 t ADT: 176

FDR

Good

Over: WARM SPRINGS CREEK

NO DATA ENTERED, Fremont, WY

Built 1949 Load: 31.8 t ADT: 50

I-25 NBL

Good

Over: Lodgepole Creek

Cheyenne - Chugwater, Laramie, WY

Built 1957 Load: 31.8 t ADT: 3,271

I-80 WBL

Good

Over: Ui County Road 223

Evanston - Green River, Uinta, WY

Built 1969 Load: 31.8 t ADT: 6,203

I-90 EBL

Good

Over: Crazy Woman Creek

Buffalo - Gillette, Johnson, WY

Built 1961 Load: 31.8 t ADT: 2,067

I-90 WBL

Good

Over: Crazy Woman Creek

Buffalo - Gillette, Johnson, WY

Built 1961 Load: 31.8 t ADT: 2,013

I-90 EBL

Good

Over: WYO 585

Sundance Marginal, Crook, WY

Built 1972 Load: 31.8 t ADT: 2,744

I-90 EBL

Good

Over: I-90 Bus. / US 14

Sundance Marginal, Crook, WY

Built 1972 Load: 31.8 t ADT: 2,744

US 30

Good

Over: Machinery Pass

Sage Jct - Kemmerer, Lincoln, WY

Built 1971 Load: 31.8 t ADT: 1,406

US 14

Good

Over: Little Tongue River

Burgess Jct - Ranchester, Sheridan, WY

Built 1926 Load: 31.8 t ADT: 767

US 16

Good

Over: Salt Creek

Newcastle - S Dak Line, Weston, WY

Built 1959 Load: 31.8 t ADT: 1,658

WYO 231

Good

Over: Spring Creek

Jct Us 30 - Cokeville, Lincoln, WY

Built 1969 Load: 31.8 t ADT: 1,057

WYO 296

Good

Over: Muddy Creek

Jct US 212 - Jct WYO 120, Park, WY

Built 1970 Load: 31.8 t ADT: 832

Showing 2,201-2,250 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.