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 87 Bus

Fair

Over: Little Goose Creek

Sheridan - Banner, Sheridan, WY

Built 1939 Load: 30.8 t ADT: 1,647

US 16 Bypass

Fair

Over: Cambria Creek

Newcastle, Weston, WY

Built 1977 Load: 30.8 t ADT: 2,934

Snowy Range Road

Fair

Over: Laramie River

Laramie, Albany, WY

Built 1977 Load: 30.8 t ADT: 11,309

US 26

Fair

Over: Poison Creek

Riverton - Shoshoni, Fremont, WY

Built 1977 Load: 30.8 t ADT: 3,460

WYO 254

Fair

Over: Casper Creek

Salt Creek Conn Casper, Natrona, WY

Built 1979 Load: 30.8 t ADT: 4,809

I-25 SBL

Fair

Over: I-25 Service Road

Casper - Kaycee, Natrona, WY

Built 1980 Load: 30.8 t ADT: 1,439

WYO 116 S

Fair

Over: BNSF Railway

Upton - Jct WYO 450, Weston, WY

Built 1980 Load: 30.8 t ADT: 514

US 189

Fair

Over: US 30

Lazeart Jct - Kemmerer, Lincoln, WY

Built 1981 Load: 30.8 t ADT: 2,224

WYO 59

Fair

Over: Spring Creek

Douglas - Reno Jct, Campbell, WY

Built 1979 Load: 30.8 t ADT: 2,891

WYO 487

Fair

Over: Bates Creek

Medicine Bow - Jt WYO 220, Natrona, WY

Built 1981 Load: 30.8 t ADT: 832

WYO 28

Fair

Over: Little Sandy River

Farson - Jct Us 287, Sweetwater, WY

Built 1982 Load: 30.8 t ADT: 1,783

US 189

Fair

Over: UPRR

Lazeart Jct.-Kemmerer, Lincoln, WY

Built 1984 Load: 30.8 t ADT: 1,676

US 189

Fair

Over: UPRR

Lazeart Jct-Kemmerer, Lincoln, WY

Built 1984 Load: 30.8 t ADT: 1,676

Pl Cnty Rd 90

Fair

Over: Wheatland Creek

4 Mi. N. Of Wheatland, Platte, WY

Built 1975 Load: 30.8 t ADT: 609

WYO 338

Fair

Over: BNSF / Goose Creek

Sheridan-Decker Road, Sheridan, WY

Built 1987 Load: 30.8 t ADT: 960

WYO 320

Fair

Over: Laramie River

Wheatland-Dwyer Jct., Platte, WY

Built 1987 Load: 30.8 t ADT: 874

Sh Cnty Rd 139

Fair

Over: BNSF Railway

4 Mi N.E. Of Sheridan, Sheridan, WY

Built 1988 Load: 30.8 t ADT: 889

Ui Cnty Rd YC1

Fair

Over: Blacks Fork River

11 Mi S.W. Of Jct S-410, Uinta, WY

Built 1984 Load: 30.8 t ADT: 69

Ui Cnty Rd 261

Fair

Over: Ingersol Wash

Uinta County, Uinta, WY

Built 1985 Load: 30.8 t ADT: 72

Cb Cnty Rd 2E

Fair

Over: Little Medicine Bow Rvr

3 Mi N.E Of Shirley Basin, Carbon, WY

Built 1991 Load: 30.8 t ADT: 17

Ui Cnty Rd 150

Fair

Over: Bear River

20 Miles S. Of Evanston, Uinta, WY

Built 1994 Load: 30.8 t ADT: 48

WYO 120

Fair

Over: Greybull River

Meeteetse, Park, WY

Built 2001 Load: 30.8 t ADT: 2,015

WYO 51

Fair

Over: BNSF Railway

Gillette-Moorcroft, Campbell, WY

Built 2007 Load: 30.8 t ADT: 1,323

WYO 789

Fair

Over: Little Wind River

Lander - Riverton, Fremont, WY

Built 1976 Load: 31.0 t ADT: 3,514

I-80 EBL

Fair

Over: Campstool Road

Cheyenne Marginal, Laramie, WY

Built 1977 Load: 31.0 t ADT: 7,563

I-80 WBL

Fair

Over: Campstool Road

Cheyenne Marginal, Laramie, WY

Built 1977 Load: 31.0 t ADT: 6,882

Al Cnty Rd 713

Fair

Over: North Laramie River

35 Mi Ne Of Rock River, Albany, WY

Built 1970 Load: 31.0 t ADT: 19

Ln Cnty Rd 114

Fair

Over: Tincup Creek

3.5 Miles N. Of Etna, Lincoln, WY

Built 1970 Load: 31.0 t ADT: 404

El Camino Court

Fair

Over: Stonepile Creek

Gillette Streets, Campbell, WY

Built 1984 Load: 31.0 t ADT: 1,048

Cb Cnty Rd 209

Fair

Over: Unnamed Draw

14 Mi. N.W. Of Encampment, Carbon, WY

Built 1986 Load: 31.0 t ADT: 10

Bh Cnty Rd R4

Fair

Over: Sidon Canal

3 Miles East Of Deaver, Big Horn, WY

Built 1950 Load: 31.0 t ADT: 117

Sun Burst Drive

Fair

Over: Cody Canal

Apx 8 Miles Sw Of Cody, Park, WY

Built 1980 Load: 31.0 t ADT: 128

Sb Cnty Rd 132

Fair

Over: Little Sandy Creek

Sublette County, Sublette, WY

Built 1991 Load: 31.0 t ADT: 168

WYO 59

Fair

Over: Dilts Hollow

Conv Co-Douglas-Wright, Converse, WY

Built 1960 Load: 31.0 t ADT: 1,727

Al Cnty Rd 54

Fair

Over: Zeigler Creek

16 Mi Nw Of Laramie, Albany, WY

Built 2002 Load: 31.0 t ADT: 128

FDR 28

Fair

Over: N.FORK CRAZY WOMAN CREEK

1.2 MI NORTH OF HWY 16, Johnson, WY

Built 1977 Load: 31.1 t ADT: 10

Bh Cnty Rd 268

Fair

Over: Medicine Lodge Creek

1 Mile N.E. Of Hyatville, Big Horn, WY

Built 1970 Load: 31.1 t ADT: 188

SOUTH FORK MINER C

Fair

Over: South Fork Miner Creek

5 mi SW of Encampment WY, Carbon, WY

Built 1996 Load: 31.4 t ADT: 50

I-25 SBL

Fair

Over: East Douglas Intg

Douglas Marginal, Converse, WY

Built 1967 Load: 31.4 t ADT: 4,292

WYO 120

Fair

Over: Alkali Lake

Thermopolis - Cody, Park, WY

Built 1970 Load: 31.4 t ADT: 2,654

US 191

Fair

Over: Hoback River

Daniel Jct - Hoback Jct, Sublette, WY

Built 1978 Load: 31.4 t ADT: 1,868

Go Cnty Rd 15G

Fair

Over: Interstate Canal

Ft. Laramie, Goshen, WY

Built 1973 Load: 31.4 t ADT: 201

I-80 EBL

Fair

Over: Riverview Cemetery Road

Green River Marginal, Sweetwater, WY

Built 1966 Load: 31.5 t ADT: 7,619

I-80 WBL

Fair

Over: Riverview Cemetery Road

Green River Marginal, Sweetwater, WY

Built 1966 Load: 31.5 t ADT: 9,240

GRAND LOOP ROAD

Fair

Over: GIBBON RIVER

0.5 MI. SOUTH OF MADISON, Teton, WY

Built 1960 Load: 31.7 t ADT: 1,807

GRAND LOOP ROAD

Fair

Over: FIREHOLE RIVER

14.6 MI. SOUTH OF MADISON, Teton, WY

Built 1967 Load: 31.7 t ADT: 1,807

NORTHEAST ENTRANCE

Fair

Over: DRY CREEK

3.3 MI. WEST OF NE ENTRAN, Park, WY

Built 1936 Load: 31.7 t ADT: 1,982

NORTHEAST ENTRANCE

Fair

Over: PEBBLE CREEK

9.2 MI. WEST OF NE ENTRAN, Park, WY

Built 1934 Load: 31.7 t ADT: 1,982

BEARTOOTH HIGHWAY

Fair

Over: INDEX CREEK

9.9 MI. EAST OF NE ENTRAN, Park, WY

Built 1963 Load: 31.7 t ADT: 1,600

I-80 EBL

Fair

Over: UPRR / US 30

Cheyenne Marginal, Laramie, WY

Built 1963 Load: 31.7 t ADT: 8,054

Showing 701-750 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.