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

Co Cnty Rd 1

Fair

Over: Sand Creek

13 Mi. Se Of Douglas, Converse, WY

Built 2002 Load: 23.2 t ADT: 207

I-90 EBL

Fair

Over: Machinery Pass

Moorcroft - Sundance, Crook, WY

Built 1963 Load: 23.2 t ADT: 2,063

I-25 NBL

Fair

Over: Machinery Pass

Kaycee - Buffalo, Johnson, WY

Built 1968 Load: 23.2 t ADT: 1,573

I-25 SBL

Fair

Over: Machinery Pass

Kaycee - Buffalo, Johnson, WY

Built 1968 Load: 23.2 t ADT: 1,472

I-90 EBL

Fair

Over: Machinery Pass

Buffalo - Gillette, Johnson, WY

Built 1961 Load: 23.2 t ADT: 2,077

I-90 WBL

Fair

Over: Machinery Pass

Buffalo - Gillette, Johnson, WY

Built 1961 Load: 23.2 t ADT: 2,020

I-25 Service Road

Fair

Over: Middle Fork Bear Creek

Cheyenne - Chugwater, Laramie, WY

Built 1954 Load: 23.2 t ADT: 34

WYO 353

Fair

Over: Unnamed Draw

Boulder-Big Sandy, Sublette, WY

Built 1946 Load: 23.2 t ADT: 716

I-80 WBL

Fair

Over: Machinery Pass

Rock Springs - Rawlins, Sweetwater, WY

Built 1960 Load: 23.2 t ADT: 6,381

FOREST ROAD 10242

Fair

Over: GREYS RIVER

T36N, R116W, S28, Lincoln, WY

Built 1980 Load: 23.3 t ADT: 50

US 310

Fair

Over: Little Dry Creek

Jct WYO 310 - Lovell, Big Horn, WY

Built 1957 Load: 23.5 t ADT: 2,255

WYO 77

Fair

Over: Muddy Creek

Jct WYO 487 - Shirley Rim, Carbon, WY

Built 1957 Load: 23.5 t ADT: 52

WYO 72

Fair

Over: UPRR

Hanna, Carbon, WY

Built 1976 Load: 23.5 t ADT: 1,018

I-90 WBL

Fair

Over: Machinery Pass

Moorcroft - Sundance, Crook, WY

Built 1963 Load: 23.5 t ADT: 1,833

US 26

Fair

Over: Sand Draw

Guernsey - Lingle, Goshen, WY

Built 1954 Load: 23.5 t ADT: 2,475

WYO 410

Fair

Over: Blacks Fork Creek

Robertson - West, Uinta, WY

Built 1960 Load: 23.5 t ADT: 175

SERVICE ROAD

Fair

Over: LARAMIE RIVER

2.5 MILES WEST OF FORT LA, Goshen, WY

Built 1969 Load: 23.6 t ADT: 25

WYO 192

Fair

Over: North Fork Powder River

Kaycee - Jct WYO 387, Johnson, WY

Built 1942 Load: 23.6 t ADT: 229

WYO 374

Fair

Over: UPRR

Jct I-80 - Green River, Sweetwater, WY

Built 1946 Load: 23.6 t ADT: 3,024

Sw Cnty Rd 28

Fair

Over: Means Canal

10 Miles N. Of Farson, Sweetwater, WY

Built 1996 Load: 23.6 t ADT: 10

GRAND LOOP ROAD

Fair

Over: LAVA CREEK

4.5 MI. SOUTHEAST OF MAMM, Teton, WY

Built 1932 Load: 23.6 t ADT: 1,807

SOUTH ENTRANCE ROA

Fair

Over: THUMB CREEK

0.7 MI. SOUTH OF WEST THU, Teton, WY

Built 1972 Load: 23.6 t ADT: 1,598

6902: PATHFINDER R

Fair

Over: NORTH PLATTE RIVER

10 miles SW of Alcova, WY, Natrona, WY

Built 1995 Load: 23.7 t ADT: 70

I-90 EBL

Fair

Over: Machinery Pass

Moorcroft - Sundance, Crook, WY

Built 1961 Load: 23.8 t ADT: 2,063

I-90 EBL

Fair

Over: Machinery Pass

Buffalo - Gillette, Campbell, WY

Built 1959 Load: 23.9 t ADT: 2,057

I-90 WBL

Fair

Over: Machinery Pass

Buffalo - Gillette, Campbell, WY

Built 1959 Load: 23.9 t ADT: 2,114

I-90 EBL

Fair

Over: Machinery Pass

Buffalo - Gillette, Campbell, WY

Built 1959 Load: 23.9 t ADT: 2,057

I-90 WBL

Fair

Over: Machinery Pass

Buffalo - Gillette, Campbell, WY

Built 1959 Load: 23.9 t ADT: 2,114

I-90 EBL

Fair

Over: Machinery Pass

Buffalo - Gillette, Johnson, WY

Built 1961 Load: 23.9 t ADT: 2,110

I-90 WBL

Fair

Over: Machinery Pass

Buffalo - Gillette, Johnson, WY

Built 1961 Load: 23.9 t ADT: 2,033

US 30

Fair

Over: Smiths Fork River

Border Jct - Sage Jct, Lincoln, WY

Built 1935 Load: 23.9 t ADT: 1,815

US 20 Service Road

Fair

Over: Elkhorn Creek

East Yellowstone - Casper, Natrona, WY

Built 1957 Load: 23.9 t ADT: 180

WYO 314

Fair

Over: Richeau Creek

Jct I-25 - East, Platte, WY

Built 1949 Load: 23.9 t ADT: 122

I-90 EBL

Fair

Over: Machinery Pass

Sheridan Marginal, Sheridan, WY

Built 1961 Load: 23.9 t ADT: 3,462

I-90 WBL

Fair

Over: Machinery Pass

Sheridan Marginal, Sheridan, WY

Built 1961 Load: 23.9 t ADT: 3,642

US 16

Fair

Over: Alum Creek

Upton - Newcastle, Weston, WY

Built 1957 Load: 23.9 t ADT: 1,390

6214: BAR C ROAD

Fair

Over: MIDDLE FORK POWDER RIVER

4 miles S of Barnum, WY, Johnson, WY

Built 1976 Load: 24.0 t ADT: 30

I-80 EBL

Fair

Over: 4 Mile Draw

Rock Springs - Rawlins, Carbon, WY

Built 1959 Load: 24.1 t ADT: 6,579

I-80 WBL

Fair

Over: 4 Mile Draw

Rock Springs - Rawlins, Carbon, WY

Built 1959 Load: 24.1 t ADT: 6,827

Co Cnty Rd 38

Fair

Over: Unnamed Draw

17 Miles N.E. Of Bill, Converse, WY

Built 1970 Load: 24.1 t ADT: 24

US 30 Service Road

Fair

Over: Twin Creek

Kemmer-Sage Jct.Rd., Lincoln, WY

Built 1959 Load: 24.1 t ADT: 151

WYO 336

Fair

Over: Prairie Dog Creek

Sheridan - East, Sheridan, WY

Built 1956 Load: 24.1 t ADT: 572

WYO 336

Fair

Over: Dutch Creek

Sheridan - East, Sheridan, WY

Built 1956 Load: 24.1 t ADT: 189

WYO 353

Fair

Over: East Fork River

Boulder - Big Sandy, Sublette, WY

Built 1957 Load: 24.1 t ADT: 96

I-90 Service Road

Fair

Over: Alkali Creek

Sundance - S Dakota Line, Crook, WY

Built 1956 Load: 24.2 t ADT: 270

WYO 130

Fair

Over: North Platte River

Saratoga, Carbon, WY

Built 1949 Load: 24.3 t ADT: 2,065

FOREST ROAD 10125

Fair

Over: SHEEP CREEK

NO DATA ENTERED, Lincoln, WY

Built 1967 Load: 24.3 t ADT: 50

FOREST ROAD 10125

Fair

Over: SHEEP CREEK

NO DATA ENTERED, Lincoln, WY

Built 1967 Load: 24.3 t ADT: 50

FR 10002

Fair

Over: MURPHY CREEK

11 MI. SE. OF ALPINE, Lincoln, WY

Built 1981 Load: 24.3 t ADT: 50

1213: WHISTLE CREE

Fair

Over: WHISTLE CREEK

37 mi. NW of Greybull, WY, Park, WY

Built 2011 Load: 24.3 t ADT: 30

Showing 751-800 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.