State profile · Below median Poor share

Wyoming bridge safety

Condition ratings, load ratings, and Poor-condition data for every public highway bridge in Wyoming, based on the FHWA National Bridge Inventory.

3,181
Public bridges
26.2%
Good condition
5.4%
Poor condition

Data updated May 2026

Total Bridges

3,181

Public highway bridges in Wyoming

Good Condition

26.2%

833 bridges rated 7-9

-23.8pp vs 50% benchmark

Poor Condition

5.4%

172 bridges whose lowest applicable component is rated 0-4

-1.6pp vs national avg 7.0%

Wyoming vs national bridge condition

Wyoming - Good condition share 26.2%
National avg

Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).

Wyoming - Poor-condition share 18.0%
National avg

Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.

Condition Distribution

Wyoming32%61.4%GoodFairPoor
Bridge inventory deck-condition mix - Wyoming (FHWA NBI)

Counties (23)

Albany 124 Big Horn 93 Campbell 158 Carbon 207 Converse 147 Crook 176 Fremont 177 Goshen 108 Hot Springs 40 Johnson 204 Laramie 261 Lincoln 131 Natrona 138 Niobrara 34 Park 187 Platte 163 Sheridan 171 Sublette 109 Sweetwater 196 Teton 119 Uinta 134 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.

IN

Indiana

4.94% top marginal rate
Structure
Progressive
Burden @ $100K
$18,630

KS

Kansas

5.25% top marginal rate
Structure
Progressive
Burden @ $100K
$23,867
Selected

WY

Wyoming

5.41% top marginal rate
Structure
Progressive
Burden @ $100K
$3,181

ID

Idaho

5.51% top marginal rate
Structure
Progressive
Burden @ $100K
$1,742

MS

Mississippi

5.92% top marginal rate
Structure
Progressive
Burden @ $100K
$16,823

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.

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

BLM Road 4116

Poor

Over: Big Sandy River

35 Miles Se Of Boulder, Sublette, WY

Built 1982 Load: 5.4 t ADT: 49

NO DATA ENTERED

Poor

Over: NO DATA ENTERED

NO DATA ENTERED, Lincoln, WY

Built 2013 Load: 5.5 t ADT: 50

Sh Cnty Rd 110

Poor

Over: Tongue River

7 Mi Nw Of Sheridan, Sheridan, WY

Built 1903 Load: 5.5 t ADT: 179

All Bridges in Wyoming

I-25 NBL

Good

Over: No 2 Canal

Wheatland Marginal, Platte, WY

Built 1975 Load: 29.9 t ADT: 3,243

WYO 319

Good

Over: Elkhorn Creek

Glendo - Orin Jct, Platte, WY

Built 1958 Load: 29.9 t ADT: 412

WYO 331

Good

Over: Big Goose Creek

Sheridan - Beckton, Sheridan, WY

Built 1970 Load: 29.9 t ADT: 1,490

WYO 370

Good

Over: UPRR

Jct I-80 - East, Sweetwater, WY

Built 1977 Load: 29.9 t ADT: 1,376

FOUNTAIN FLAT DRIV

Good

Over: NEZ PERCE CREEK

5.9 MI. SOUTH OF MADISON, Teton, WY

Built 1997 Load: 29.9 t ADT: 500

I-80 EBL

Good

Over: Smiths Fork Creek

Evanston - Green River, Uinta, WY

Built 1968 Load: 29.9 t ADT: 6,673

US 20

Good

Over: Johnson Canal

Casper - Shoshoni, Natrona, WY

Built 1976 Load: 30.0 t ADT: 2,908

Fr Cnty Rd 315

Good

Over: Pilot Canal

9 mi north of Riverton, Fremont, WY

Built 2021 Load: 30.1 t ADT: 704

FOREST ROAD 10138

Good

Over: GREYS RIVER

NO DATA ENTERED, Lincoln, WY

Built 2012 Load: 30.1 t ADT: 75

ROAD

Good

Over: CASCADE CREEK

NO DATA ENTERED, Teton, WY

Built 1992 Load: 30.1 t ADT: 36

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

Cl Cnty Rd 26

Good

Over: Cow Creek

22 Miles Ne Of Gillette, Campbell, WY

Built 2009 Load: 30.8 t ADT: 39

I-80 EBL

Good

Over: E F Medicine Bow River

Rawlins - Laramie, Carbon, WY

Built 1969 Load: 30.8 t ADT: 5,745

I-25 SBL

Good

Over: North Platte River

Douglas Marginal, Converse, WY

Built 1966 Load: 30.8 t ADT: 4,292

I-25 NBL

Good

Over: Machinery Pass

Douglas - Casper, Converse, WY

Built 1966 Load: 30.8 t ADT: 4,193

WYO 59

Good

Over: Antelope Creek

Douglas - Reno Jct, Converse, WY

Built 1972 Load: 30.8 t ADT: 2,840

I-25 SBL

Good

Over: Indian Creek

Glendo - Douglas, Converse, WY

Built 1972 Load: 30.8 t ADT: 3,318

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

NO DATA ENTERED

Good

Over: GREYS RIVER

NO DATA ENTERED, Lincoln, WY

Built 2010 Load: 30.8 t ADT: 50

WYO 238

Good

Over: West Channel Salt River

Afton-Auburn, Lincoln, WY

Built 1987 Load: 30.8 t ADT: 1,372

Conroy Street

Good

Over: Hams Fork River

Diamondville, Lincoln, WY

Built 2015 Load: 30.8 t ADT: 120

Na Cnty Rd 316

Good

Over: Casper Canal

20 Miles Sw Of Casper, Natrona, WY

Built 2003 Load: 30.8 t ADT: 5

Pa Cnty Rd R16

Good

Over: Alkali Creek

1.5 Mi N Of Ralston, Park, WY

Built 2011 Load: 30.8 t ADT: 128

WYO 339

Good

Over: Goose Creek

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

Built 1966 Load: 30.8 t ADT: 233

Industrial Drive

Good

Over: Killpecker Creek

Rock Springs, Sweetwater, WY

Built 2009 Load: 30.8 t ADT: 1,802

US 16

Good

Over: Whoopup Creek

Newcastle - S Dak Line, Weston, WY

Built 1959 Load: 30.8 t ADT: 1,881

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

Fr Cnty Rd 298

Good

Over: Wyoming Canal

5 Mi Nw Of Morton, Fremont, WY

Built 2017 Load: 31.4 t ADT: 26

W 25th Street

Good

Over: Garden Creek

Casper Streets, Natrona, WY

Built 1960 Load: 31.4 t ADT: 6,586

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

US 310

Good

Over: Sidon Canal

Lovell - Deaver, Big Horn, WY

Built 1971 Load: 31.8 t ADT: 1,834

Bh Cnty Rd 85

Good

Over: Shell Creek

3 Miles W. Of Shell, Big Horn, WY

Built 1968 Load: 31.8 t ADT: 144

FDR

Good

Over: WARM SPRINGS CREEK

NO DATA ENTERED, Fremont, WY

Built 1949 Load: 31.8 t ADT: 50

Fr Cnty Rd 235

Good

Over: Little Popo Agie River

Red Canyon Road, Fremont, WY

Built 1992 Load: 31.8 t ADT: 26

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-25 NBL

Good

Over: Lodgepole Creek

Cheyenne - Chugwater, Laramie, WY

Built 1957 Load: 31.8 t ADT: 3,271

US 30

Good

Over: Machinery Pass

Sage Jct - Kemmerer, Lincoln, WY

Built 1971 Load: 31.8 t ADT: 1,406

Showing 2,351-2,400 of 3,181 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.

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.