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

US 191

Fair

Over: Hoback River

Daniel Jct - Hoback Jct, Sublette, WY

Built 1946 Load: 24.3 t ADT: 2,444

I-90 EBL

Fair

Over: Machinery Pass

Buffalo - Gillette, Campbell, WY

Built 1960 Load: 24.5 t ADT: 1,967

I-90 WBL

Fair

Over: Machinery Pass

Buffalo - Gillette, Campbell, WY

Built 1960 Load: 24.5 t ADT: 1,975

Cl Cnty Rd 12

Fair

Over: Timber Creek

T49N R069W S29, Campbell, WY

Built 1983 Load: 24.5 t ADT: 140

Constitution Drive

Fair

Over: Little Rawhide Creek

Gillette Streets, Campbell, WY

Built 1985 Load: 24.5 t ADT: 312

American Lane

Fair

Over: Little Rawhide Creek

Gillette Streets, Campbell, WY

Built 1985 Load: 24.5 t ADT: 312

I-90 EBL

Fair

Over: Machinery Pass

Moorcroft - Sundance, Crook, WY

Built 1962 Load: 24.5 t ADT: 2,133

I-90 WBL

Fair

Over: Machinery Pass

Moorcroft - Sundance, Crook, WY

Built 1962 Load: 24.5 t ADT: 1,928

I-90 EBL

Fair

Over: Machinery Pass

Moorcroft - Sundance, Crook, WY

Built 1962 Load: 24.5 t ADT: 2,133

I-90 WBL

Fair

Over: Machinery Pass

Moorcroft - Sundance, Crook, WY

Built 1962 Load: 24.5 t ADT: 1,928

I-90 EBL

Fair

Over: Machinery Pass

Moorcroft - Sundance, Crook, WY

Built 1961 Load: 24.5 t ADT: 2,063

IRR BIA RTE 46

Fair

Over: SUB AGENCY DITCH

14.5 KM SW OF RIVERTON, Fremont, WY

Built 1970 Load: 24.5 t ADT: 300

IRR BIA RTE 46

Fair

Over: SUB AGENCY DITCH

11.3 KM SW OF RIVERTON, Fremont, WY

Built 1970 Load: 24.5 t ADT: 300

IRR BIA RTE 101

Fair

Over: LOWER MUDDY CREEK

0.8 KM SW OF JCT 18 & 101, Fremont, WY

Built 1977 Load: 24.5 t ADT: 50

IRR BIA RTE 16

Fair

Over: COOLIDGE CANAL

11.3KM EAST OF WIND RIVER, Fremont, WY

Built 1979 Load: 24.5 t ADT: 300

US 26

Fair

Over: County Line Draw

Guernsey - Lingle, Goshen, WY

Built 1959 Load: 24.5 t ADT: 1,667

I-90 EBL

Fair

Over: Machinery Pass

Buffalo - Gillette, Johnson, WY

Built 1961 Load: 24.5 t ADT: 2,077

I-90 WBL

Fair

Over: Machinery Pass

Buffalo - Gillette, Johnson, WY

Built 1961 Load: 24.5 t ADT: 2,020

US 30

Fair

Over: South Fork Twin Creek

Sage Jct - Kemmerer, Lincoln, WY

Built 1961 Load: 24.5 t ADT: 1,406

NORTHEAST ENTRANCE

Fair

Over: SODA BUTTE CREEK

2.9 MI. WEST OF NE ENTRAN, Park, WY

Built 1934 Load: 24.5 t ADT: 1,982

NORTHEAST ENTRANCE

Fair

Over: SODA BUTTE CREEK

6.4 miles west of NE Entr, Park, WY

Built 1934 Load: 24.5 t ADT: 1,982

E Heald Street

Fair

Over: Little Goose Creek

Sheridan Streets, Sheridan, WY

Built 1970 Load: 24.5 t ADT: 1,703

ROAD 5

Fair

Over: GROS VENTRE RIVER

GROS VENTRE RVR AT KELLY, Teton, WY

Built 1975 Load: 24.5 t ADT: 40

TETON FOREST ACCES

Fair

Over: DITCH CREEK

1 mile north of Moose Jun, Teton, WY

Built 1960 Load: 24.5 t ADT: 300

U.S. ROUTE 89

Fair

Over: CREEK

4 miles south of Moran Ju, Teton, WY

Built 1957 Load: 24.5 t ADT: 3,500

WYO 413

Fair

Over: Blacks Fork River

Lyman - Jct I-80, Uinta, WY

Built 1966 Load: 24.5 t ADT: 707

Ui Cnty Rd 173

Fair

Over: Muddy Creek

13 Mi. N.W. Of Robertson, Uinta, WY

Built 1984 Load: 24.5 t ADT: 264

FOREST ROAD 10079

Fair

Over: DRY CREEK

5 MI. SE. OF AFTON WY, Lincoln, WY

Built 1979 Load: 24.6 t ADT: 75

3306: MUDDY CREEK

Fair

Over: MUDDY CREEK

26 Miles SW Rawlins, WY, Carbon, WY

Built 1985 Load: 24.9 t ADT: 25

I-25 NBL

Fair

Over: Machinery Pass

Casper - Kaycee, Johnson, WY

Built 1960 Load: 24.9 t ADT: 1,499

I-25 SBL

Fair

Over: Machinery Pass

Casper - Kaycee, Johnson, WY

Built 1960 Load: 24.9 t ADT: 1,439

La Cnty Rd 203-1

Fair

Over: Crow Creek

0.5 Mi.Es W. Of Carpenter, Laramie, WY

Built 1972 Load: 24.9 t ADT: 831

US 30

Fair

Over: Spring Creek

Border Jct - Sage Jct, Lincoln, WY

Built 1935 Load: 24.9 t ADT: 1,815

I-25 SBL

Fair

Over: Machinery Pass

Wheatland - Glendo, Platte, WY

Built 1960 Load: 24.9 t ADT: 3,375

I-80 EBL

Fair

Over: Machinery Pass

Evanston - Green River, Uinta, WY

Built 1960 Load: 24.9 t ADT: 7,159

I-80 WBL

Fair

Over: Machinery Pass

Evanston - Green River, Uinta, WY

Built 1960 Load: 24.9 t ADT: 7,504

I-80 EBL

Fair

Over: Machinery Pass

Evanston - Green River, Uinta, WY

Built 1960 Load: 24.9 t ADT: 7,135

I-80 WBL

Fair

Over: Machinery Pass

Evanston - Green River, Uinta, WY

Built 1960 Load: 24.9 t ADT: 7,481

I-80 WBL

Fair

Over: Machinery Pass

Rawlins - Laramie, Carbon, WY

Built 1967 Load: 25.1 t ADT: 5,811

I-90 EBL

Fair

Over: Machinery Pass

Moorcroft - Sundance, Crook, WY

Built 1962 Load: 25.1 t ADT: 2,133

I-90 WBL

Fair

Over: Machinery Pass

Moorcroft - Sundance, Crook, WY

Built 1962 Load: 25.1 t ADT: 1,928

WYO 157

Fair

Over: Unnamed Draw

Lingle - Jct Us 26, Goshen, WY

Built 1957 Load: 25.1 t ADT: 102

I-90 EBL

Fair

Over: Machinery Pass

Buffalo - Gillette, Johnson, WY

Built 1962 Load: 25.1 t ADT: 1,823

I-90 WBL

Fair

Over: Machinery Pass

Buffalo - Gillette, Johnson, WY

Built 1962 Load: 25.1 t ADT: 1,833

WYO 239

Fair

Over: Salt River

Jct WYO 89 - Freedom, Lincoln, WY

Built 1953 Load: 25.1 t ADT: 1,156

WYO 319

Fair

Over: North Fork Bear Creek

Jct I-25 - Glendo, Platte, WY

Built 1922 Load: 25.1 t ADT: 179

I-90 EBL

Fair

Over: Machinery Pass

Montana Line - Sheridan, Sheridan, WY

Built 1959 Load: 25.1 t ADT: 3,688

I-90 WBL

Fair

Over: Machinery Pass

Montana Line - Sheridan, Sheridan, WY

Built 1959 Load: 25.1 t ADT: 3,758

I-90 EBL

Fair

Over: Machinery Pass

Montana Line - Sheridan, Sheridan, WY

Built 1959 Load: 25.1 t ADT: 3,688

I-90 WBL

Fair

Over: Machinery Pass

Montana Line - Sheridan, Sheridan, WY

Built 1959 Load: 25.1 t ADT: 3,758

Showing 801-850 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.