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-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-80 EBL

Fair

Over: Machinery Pass

Evanston - Green River, Uinta, WY

Built 1960 Load: 25.1 t ADT: 7,135

I-80 WBL

Fair

Over: Machinery Pass

Evanston - Green River, Uinta, WY

Built 1960 Load: 25.1 t ADT: 7,481

Pa Cnty Rd 3LD

Fair

Over: Greybull River

5 Mi. Ne Of Meeteetse, Park, WY

Built 1964 Load: 25.2 t ADT: 2,561

US 16

Fair

Over: Big Horn Canal

Worland - Basin, Big Horn, WY

Built 1957 Load: 25.4 t ADT: 2,122

WYO 35

Fair

Over: Sage Creek

Jct Us310 WY 789 - South, Big Horn, WY

Built 1947 Load: 25.4 t ADT: 2,058

US 16

Fair

Over: BNSF Railway

Worland - Basin, Big Horn, WY

Built 1979 Load: 25.4 t ADT: 1,998

I-80 EBL

Fair

Over: Machinery Pass

Rawlins - Laramie, Carbon, WY

Built 1967 Load: 25.4 t ADT: 5,683

I-80 WBL

Fair

Over: Machinery Pass

Rawlins - Laramie, Carbon, WY

Built 1967 Load: 25.4 t ADT: 5,747

Hs Cnty Rd 1

Fair

Over: North Fork Owl Creek

14 Mi Sw Of Hamilton Dome, Hot Springs, WY

Built 1978 Load: 25.4 t ADT: 76

US 89

Fair

Over: Snake River

Afton - Alpine Jct, Lincoln, WY

Built 1957 Load: 25.4 t ADT: 6,269

I-80 EBL

Fair

Over: Machinery Pass

Evanston - Green River, Sweetwater, WY

Built 1967 Load: 25.4 t ADT: 7,490

I-80 WBL

Fair

Over: Machinery Pass

Evanston - Green River, Sweetwater, WY

Built 1967 Load: 25.4 t ADT: 7,705

CAMPGROUND ROAD

Fair

Over: SMALL STREAM

0.9 MILES NORTHEAST OF JU, Teton, WY

Built 1960 Load: 25.4 t ADT: 800

WYO 59

Fair

Over: Olmstead Draw

Gillette - Mont Line, Campbell, WY

Built 1954 Load: 25.5 t ADT: 543

I-90 EBL

Fair

Over: Machinery Pass

Moorcroft - Sundance, Crook, WY

Built 1961 Load: 25.5 t ADT: 2,063

I-90 WBL

Fair

Over: Machinery Pass

Moorcroft - Sundance, Crook, WY

Built 1961 Load: 25.5 t ADT: 1,833

I-90 EBL

Fair

Over: Machinery Pass

Moorcroft - Sundance, Crook, WY

Built 1960 Load: 25.5 t ADT: 2,134

I-90 WBL

Fair

Over: Machinery Pass

Moorcroft - Sundance, Crook, WY

Built 1960 Load: 25.5 t ADT: 1,900

I-90 EBL

Fair

Over: Machinery Pass

Moorcroft - Sundance, Crook, WY

Built 1960 Load: 25.5 t ADT: 2,134

I-90 WBL

Fair

Over: Machinery Pass

Moorcroft - Sundance, Crook, WY

Built 1960 Load: 25.5 t ADT: 1,900

I-90 EBL

Fair

Over: Machinery Pass

Moorcroft - Sundance, Crook, WY

Built 1959 Load: 25.5 t ADT: 2,134

I-90 WBL

Fair

Over: Machinery Pass

Moorcroft - Sundance, Crook, WY

Built 1959 Load: 25.5 t ADT: 1,900

I-90 EBL

Fair

Over: Machinery Pass

Sheridan - Buffalo, Johnson, WY

Built 1966 Load: 25.5 t ADT: 3,533

I-90 EBL

Fair

Over: Negro Creek

Buffalo - Gillette, Johnson, WY

Built 1960 Load: 25.5 t ADT: 2,127

I-90 WBL

Fair

Over: Negro Creek

Buffalo - Gillette, Johnson, WY

Built 1960 Load: 25.5 t ADT: 2,077

WYO 410

Fair

Over: Smiths Fork Creek

Robertson - West, Uinta, WY

Built 1960 Load: 25.5 t ADT: 175

FOREST ROAD 10080

Fair

Over: WILLOW CREEK

3 MI. E. OF TURNERVILLE, Lincoln, WY

Built 1975 Load: 25.6 t ADT: 50

I-90 EBL

Fair

Over: Machinery Pass

Buffalo - Gillette, Campbell, WY

Built 1962 Load: 25.8 t ADT: 1,823

I-80 EBL

Fair

Over: Machinery Pass

Rawlins - Laramie, Carbon, WY

Built 1967 Load: 25.8 t ADT: 5,739

WYO 172

Fair

Over: Kirby Creek

Lucerne - East, Hot Springs, WY

Built 1953 Load: 25.8 t ADT: 404

I-90 WBL

Fair

Over: Machinery Pass

Sheridan - Buffalo, Johnson, WY

Built 1966 Load: 25.8 t ADT: 3,700

WYO 320

Fair

Over: Wheatland Creek

Wheatland - Jct Us 26, Platte, WY

Built 1956 Load: 25.8 t ADT: 2,218

3306: MUDDY CREEK

Fair

Over: MUDDY CREEK

27 Miles SW Rawlins, WY, Carbon, WY

Built 1985 Load: 25.9 t ADT: 25

FOREST ROAD 10079

Fair

Over: DRY CREEK

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

Built 1979 Load: 25.9 t ADT: 50

FOREST ROAD 10079

Fair

Over: DRY CREEK

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

Built 1979 Load: 25.9 t ADT: 50

I-90 WBL

Fair

Over: Machinery Pass

Buffalo - Gillette, Campbell, WY

Built 1962 Load: 26.1 t ADT: 1,833

I-25 NBL

Fair

Over: Machinery Pass

Cheyenne - Chugwater, Laramie, WY

Built 1970 Load: 26.1 t ADT: 3,271

I-25 SBL

Fair

Over: Machinery Pass

Cheyenne - Chugwater, Laramie, WY

Built 1970 Load: 26.1 t ADT: 3,277

I-25 Service Road

Fair

Over: South Fork Bear Creek

Cheyenne - Chugwater, Laramie, WY

Built 1954 Load: 26.1 t ADT: 34

I-25 Service Road

Fair

Over: North Fork Bear Creek

Cheyenne - Chugwater, Laramie, WY

Built 1954 Load: 26.1 t ADT: 34

Ln Cnty Rd 125

Fair

Over: Salt River

0.5 Miles W. Of Thayne, Lincoln, WY

Built 1980 Load: 26.1 t ADT: 153

Na Cnty Rd 117

Fair

Over: Unnamed Draw

1 Mile East Of Edgerton, Natrona, WY

Built 1967 Load: 26.1 t ADT: 6

WYO 354

Fair

Over: Green River

Daniel Jct - West, Sublette, WY

Built 1959 Load: 26.1 t ADT: 382

FOREST ROAD 30100

Fair

Over: NORTH FK. SPREAD CK.

11 MI. SE. OF MORAN WY, Teton, WY

Built 1968 Load: 26.2 t ADT: 55

WYO 230

Fair

Over: Pioneer Canal

Laramie - Colo Line, Albany, WY

Built 1964 Load: 26.3 t ADT: 1,409

Bh Cnty Rd R16D

Fair

Over: Greybull River

1.5 Miles South Of Otto, Big Horn, WY

Built 1978 Load: 26.3 t ADT: 164

WYO 51

Fair

Over: Donkey Creek Overflow

Gillette - Moorcroft, Campbell, WY

Built 1952 Load: 26.3 t ADT: 1,323

WYO 59

Fair

Over: BNSF Railway

Gillette - Mont Line, Campbell, WY

Built 1979 Load: 26.3 t ADT: 1,333

Showing 851-900 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.