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

Cl Cnty Rd 1

Fair

Over: Donkey Creek

15 Mi E Of Gillette, Campbell, WY

Built 2010 Load: 32.7 t ADT: 595

US 30

Fair

Over: Unnamed Draw

Hanna - Medicine Bow, Carbon, WY

Built 1950 Load: 32.7 t ADT: 452

I-25 NBL

Fair

Over: French Creek

Buffalo Marginal, Johnson, WY

Built 1963 Load: 32.7 t ADT: 2,029

I-25 SBL

Fair

Over: French Creek

Buffalo Marginal, Johnson, WY

Built 1963 Load: 32.7 t ADT: 1,717

US 287

Fair

Over: Iiams Creek

Lander Southeast, Fremont, WY

Built 1982 Load: 32.7 t ADT: 3,277

WYO 450

Fair

Over: N Prong Lttle Thunder Cr

8 Mi. SW of Wright, Campbell, WY

Built 1978 Load: 32.7 t ADT: 1,476

I-25 NBL

Fair

Over: BNSF Railway

Cheyenne Marginal, Laramie, WY

Built 1958 Load: 33.0 t ADT: 11,548

I-25 SBL

Fair

Over: BNSF Railway

Cheyenne Marginal, Laramie, WY

Built 1958 Load: 33.0 t ADT: 10,139

I-25 NBL

Fair

Over: M Fork Crazy Woman Creek

Kaycee - Buffalo, Johnson, WY

Built 1968 Load: 33.0 t ADT: 1,573

I-90 EBL

Fair

Over: US 16

Buffalo Marginal, Johnson, WY

Built 1959 Load: 33.0 t ADT: 2,127

I-80 WBL

Fair

Over: Morrie Avenue

Cheyenne Marginal, Laramie, WY

Built 1973 Load: 33.0 t ADT: 10,705

I-25 NBL

Fair

Over: Co CR 1 (Irvine Road)

Douglas Marginal, Converse, WY

Built 1967 Load: 33.3 t ADT: 3,618

I-25 SBL

Fair

Over: Co CR 1 (Irvine Road)

Douglas Marginal, Converse, WY

Built 1967 Load: 33.3 t ADT: 4,292

I-80 EBL

Fair

Over: Burlington Trail Road

Cheyenne Marginal, Laramie, WY

Built 1976 Load: 33.3 t ADT: 7,563

Cb Cnty Rd 303

Fair

Over: Cow Creek

7.5 Mi. N. Of Encampment, Carbon, WY

Built 1982 Load: 33.3 t ADT: 18

Cb Cnty Rd 561N

Fair

Over: Savery Creek

7 Mi. N.E. Of Savery, Carbon, WY

Built 1985 Load: 33.3 t ADT: 81

Cb Cnty Rd 701

Fair

Over: Muddy Creek

14.5 Mi. N.W. Of Baggs, Carbon, WY

Built 1985 Load: 33.3 t ADT: 137

Cb Cnty Rd 508

Fair

Over: North Platte River

6 Mi. N.W. Of Saratoga, Carbon, WY

Built 1986 Load: 33.3 t ADT: 37

NFSR 543

Fair

Over: DOUGLAS CREEK

0.8 MI WEST OF JCT 542, Albany, WY

Built 1961 Load: 33.4 t ADT: 64

BAD PASS ROAD

Fair

Over: CROOKED CREEK

FROM N.P. VISITOR CENTER, Big Horn, WY

Built 1971 Load: 33.6 t ADT: 60

BEARTOOTH HIGHWAY

Fair

Over: CLARKS FORK YELLOWSTONE

13.4 MI. EAST OF NE ENTRA, Park, WY

Built 1965 Load: 33.6 t ADT: 1,775

BEARTOOTH HIGHWAY

Fair

Over: CRAZY CREEK

15.1 MI. EAST OF NE ENTRA, Park, WY

Built 1965 Load: 33.6 t ADT: 1,775

I-25 NBL

Fair

Over: La CR 218-2 (Farris Rd)

Cheyenne - Chugwater, Laramie, WY

Built 1970 Load: 33.6 t ADT: 3,271

I-25 SBL

Fair

Over: La CR 218-2 (Farris Rd)

Cheyenne - Chugwater, Laramie, WY

Built 1970 Load: 33.6 t ADT: 3,277

MISSILE DRIVE WEST

Fair

Over: CROW CREEK

0.30 miles south of Randa, Laramie, WY

Built 1987 Load: 33.6 t ADT: 700

I-25 NBL

Fair

Over: Na CR 600 (Blackmore)

Casper Marginal, Natrona, WY

Built 1968 Load: 33.6 t ADT: 5,945

I-25 SBL

Fair

Over: Na CR 600 (Blackmore)

Casper Marginal, Natrona, WY

Built 1968 Load: 33.6 t ADT: 6,305

WYO 387

Fair

Over: Salt Creek

Jct I-25 - Reno Jct, Natrona, WY

Built 1952 Load: 33.6 t ADT: 427

I-25 SBL

Fair

Over: Powder River Rd Intg

Casper - Kaycee, Johnson, WY

Built 1960 Load: 33.6 t ADT: 1,439

I-25 NBL

Fair

Over: TTT Road

Casper - Kaycee, Johnson, WY

Built 1960 Load: 33.6 t ADT: 1,499

I-25 SBL

Fair

Over: TTT Road

Casper - Kaycee, Johnson, WY

Built 1960 Load: 33.6 t ADT: 1,439

I-80 WBL

Fair

Over: Daley Road Intg

Rock Springs - Rawlins, Carbon, WY

Built 1961 Load: 33.6 t ADT: 6,653

I-80 EBL

Fair

Over: WYO 13

Rawlins - Laramie, Carbon, WY

Built 1970 Load: 33.6 t ADT: 5,813

I-80 WBL

Fair

Over: WYO 13

Rawlins - Laramie, Carbon, WY

Built 1970 Load: 33.6 t ADT: 5,892

I-80 EBL

Fair

Over: Al CR 55 (Welsh Lane)

Rawlins - Laramie, Albany, WY

Built 1969 Load: 33.6 t ADT: 6,163

I-80 WBL

Fair

Over: Al CR 55 (Welsh Lane)

Rawlins - Laramie, Albany, WY

Built 1969 Load: 33.6 t ADT: 6,368

I-90 EBL

Fair

Over: US 14

Sheridan Marginal, Sheridan, WY

Built 1965 Load: 33.6 t ADT: 3,462

I-90 WBL

Fair

Over: US 14

Sheridan Marginal, Sheridan, WY

Built 1965 Load: 33.6 t ADT: 3,642

I-90 EBL

Fair

Over: Upper Prairie Dog Road

Sheridan - Buffalo, Sheridan, WY

Built 1968 Load: 33.6 t ADT: 3,447

I-90 WBL

Fair

Over: Upper Prairie Dog Road

Sheridan - Buffalo, Sheridan, WY

Built 1968 Load: 33.6 t ADT: 3,517

I-90 WBL

Fair

Over: North Main Street

Buffalo Marginal, Johnson, WY

Built 1963 Load: 33.6 t ADT: 1,466

I-90 EBL

Fair

Over: Clear Creek

Buffalo Marginal, Johnson, WY

Built 1959 Load: 33.6 t ADT: 2,127

I-90 WBL

Fair

Over: Clear Creek

Buffalo Marginal, Johnson, WY

Built 1959 Load: 33.6 t ADT: 2,077

I-90 EBL

Fair

Over: Cl CR 19 (Barber Crk Rd)

Buffalo - Gillette, Campbell, WY

Built 1962 Load: 33.6 t ADT: 1,823

I-90 WBL

Fair

Over: Barber Creek Road

Buffalo - Gillette, Campbell, WY

Built 1962 Load: 33.6 t ADT: 1,833

I-90 EBL

Fair

Over: Cl CR 20 (Barlow Road)

Buffalo - Gillette, Campbell, WY

Built 1962 Load: 33.6 t ADT: 1,967

I-90 WBL

Fair

Over: Cl CR 63 (Kingsbury Rd)

Buffalo - Gillette, Campbell, WY

Built 1962 Load: 33.6 t ADT: 1,975

I-90 WBL

Fair

Over: W Fork Wild Horse Creek

Buffalo - Gillette, Campbell, WY

Built 1960 Load: 33.6 t ADT: 2,114

I-90 EBL

Fair

Over: Machinery Pass

Moorcroft - Sundance, Crook, WY

Built 1961 Load: 33.6 t ADT: 2,063

I-90 WBL

Fair

Over: Machinery Pass

Moorcroft - Sundance, Crook, WY

Built 1961 Load: 33.6 t ADT: 1,833

Showing 1,201-1,250 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.