State profile · Below national median SD

Wyoming bridge safety

Condition ratings, load ratings, and structural-deficiency data for every public highway bridge in Wyoming — drawn straight from the FHWA National Bridge Inventory.

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

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 rated 0-4

Structurally Deficient

5.4%

172 bridges flagged for repair priority

-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 — Structurally deficient share 18.0%
National avg

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

Condition Distribution

Bridge inventory deck-condition mix — Wyoming (FHWA NBI)

Wyoming26.186733731530964%50.330084878968876%GoodFairPoorStructurally Deficient
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 on the structurally deficient leaderboard (lower share = better)

States are ranked by share of bridges flagged structurally deficient — the FHWA classification for any span where deck, superstructure, or substructure carries a condition rating of 4 or below. Lower percentages indicate stronger maintenance funding and inspection follow-through. States here sit immediately above and below Wyoming on the same metric.

18

Indiana

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

20

Kansas

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

56

Wyoming

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

16

Idaho

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

28

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 composite NBI rating. Each is inspected at least every 24 months.

FIREHOLE LAKE DRIV

Structurally Deficient

Over: THERMAL AREA DRAINAGE

10 +/- MI. SOUTH OF MADIS, Teton, WY

Built 1935 Load: 3.6 t ADT: 1,500

Sb Cnty Rd 175

Structurally Deficient

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

Structurally Deficient

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

Structurally Deficient

Over: Tongue River

7 Mi Nw Of Sheridan, Sheridan, WY

Built 1903 Load: 5.5 t ADT: 179

All Bridges in Wyoming

I-80 EBL

Fair

Over: Machinery Pass

Rawlins - Laramie, Carbon, WY

Built 1967 Load: 32.7 t ADT: 6,360

I-80 WBL

Fair

Over: Machinery Pass

Rawlins - Laramie, Carbon, WY

Built 1967 Load: 32.7 t ADT: 6,418

WYO 220

Fair

Over: Pete Creek

Muddy Gap Jct-WYO 487 Jct, Carbon, WY

Built 1968 Load: 32.7 t ADT: 1,771

WYO 13

Fair

Over: 3 Mile Creek

Rock River - Jct I-80, Carbon, WY

Built 1966 Load: 32.7 t ADT: 192

WYO 487

Fair

Over: Little Medicine Bow Rvr

Medicine Bow - Jt WYO 220, Carbon, WY

Built 1959 Load: 32.7 t ADT: 499

WYO 789

Fair

Over: Cottonwood Creek

Creston Jct-Baggs, Carbon, WY

Built 1957 Load: 32.7 t ADT: 1,793

WYO 130

Fair

Over: Lake Creek

Walcott Jct-Saratoga, Carbon, WY

Built 1979 Load: 32.7 t ADT: 2,065

WYO 70

Fair

Over: West Side Canal

Baggs-Dixon, Carbon, WY

Built 1993 Load: 32.7 t ADT: 835

I-80 EBL and WBL

Fair

Over: Sugar Creek

Rawlins - Laramie, Carbon, WY

Built 2000 Load: 32.7 t ADT: 7,360

US 287

Fair

Over: Camp Creek

Rawlins-Muddy Gap, Carbon, WY

Built 1959 Load: 32.7 t ADT: 2,395

US 30

Fair

Over: Unnamed Draw

Hanna - Medicine Bow, Carbon, WY

Built 1950 Load: 32.7 t ADT: 452

I-25 NBL and SBL

Fair

Over: Six Mile Creek

Douglas - Casper, Converse, WY

Built 1961 Load: 32.7 t ADT: 4,664

I-25 NBL

Fair

Over: Five Mile Creek

Douglas - Casper, Converse, WY

Built 1961 Load: 32.7 t ADT: 4,664

I-25 SBL

Fair

Over: Five Mile Creek

Douglas - Casper, Converse, WY

Built 1961 Load: 32.7 t ADT: 5,429

I-25 NBL and SBL

Fair

Over: Alkali Creek

Douglas - Casper, Converse, WY

Built 1958 Load: 32.7 t ADT: 4,682

I-25 SBL

Fair

Over: Boxelder Creek

Douglas - Casper, Converse, WY

Built 1958 Load: 32.7 t ADT: 5,469

US 18

Fair

Over: Watkins Draw

Orin Jct - Lusk, Converse, WY

Built 1964 Load: 32.7 t ADT: 2,101

WYO 93

Fair

Over: Six Mile Creek

Douglas - North, Converse, WY

Built 1961 Load: 32.7 t ADT: 610

WYO 94

Fair

Over: Esmay Draw

Douglas - South, Converse, WY

Built 1961 Load: 32.7 t ADT: 782

I-25 NBL

Fair

Over: North Platte River

Glendo - Douglas, Converse, WY

Built 1972 Load: 32.7 t ADT: 3,471

I-25 SBL

Fair

Over: North Platte River

Glendo - Douglas, Converse, WY

Built 1972 Load: 32.7 t ADT: 3,318

WYO 59

Fair

Over: Unnamed Draw

Douglas-Bill, Converse, WY

Built 1981 Load: 32.7 t ADT: 2,840

WYO 95

Fair

Over: BNSF Railway

Glenrock-Ross, Converse, WY

Built 1994 Load: 32.7 t ADT: 1,551

US 14

Fair

Over: Belle Fourche River

Moorcroft - Sundance, Crook, WY

Built 1952 Load: 32.7 t ADT: 1,041

I-90 EBL

Fair

Over: Machinery Pass

Gillette - Moorcroft, Crook, WY

Built 1969 Load: 32.7 t ADT: 3,173

I-90 WBL

Fair

Over: Machinery Pass

Gillette - Moorcroft, Crook, WY

Built 1969 Load: 32.7 t ADT: 3,020

I-90 EBL

Fair

Over: Belle Fourche River

Gillette - Moorcroft, Crook, WY

Built 1966 Load: 32.7 t ADT: 2,627

I-90 WBL

Fair

Over: Belle Fourche River

Gillette - Moorcroft, Crook, WY

Built 1966 Load: 32.7 t ADT: 2,564

I-90 EBL and WBL

Fair

Over: Mule Creek

Moorcroft - Sundance, Crook, WY

Built 1962 Load: 32.7 t ADT: 2,063

I-90 EBL and WBL

Fair

Over: Unnamed Draw

Moorcroft - Sundance, Crook, WY

Built 1965 Load: 32.7 t ADT: 2,385

WYO 116 N

Fair

Over: S Fork Sundance Creek

Sundance - Upton, Crook, WY

Built 1948 Load: 32.7 t ADT: 546

WYO 116 N

Fair

Over: Sundance Creek

Sundance - Upton, Crook, WY

Built 1948 Load: 32.7 t ADT: 546

WYO 116 N

Fair

Over: N Fork Sundance Creek

Sundance - Upton, Crook, WY

Built 1948 Load: 32.7 t ADT: 546

US 14

Fair

Over: Unnamed Draw

Moorcroft - Sundance, Crook, WY

Built 1965 Load: 32.7 t ADT: 1,780

Cr Cnty Rd 180

Fair

Over: Inyan Kara Creek

6.5M N.E. Of Pine Haven, Crook, WY

Built 1978 Load: 32.7 t ADT: 126

US 14

Fair

Over: Cabin Creek

Moorcroft Devils Twr Jct, Crook, WY

Built 1987 Load: 32.7 t ADT: 1,041

WYO 585

Fair

Over: Sundance Creek

Sundance, Crook, WY

Built 1989 Load: 32.7 t ADT: 1,634

WYO 585

Fair

Over: Soldier Creek

Four Corners-Sundance Rd, Crook, WY

Built 1990 Load: 32.7 t ADT: 903

I-90 EBL and WBL

Fair

Over: Cundy Creek

Moorcroft - Sundance, Crook, WY

Built 1963 Load: 32.7 t ADT: 2,385

WYO 113

Fair

Over: Wind Creek

Pine Haven Road, Crook, WY

Built 1991 Load: 32.7 t ADT: 1,035

Cr Cnty Rd 142

Fair

Over: Redwater Creek

1.5 Miles N. Of Beulah, Crook, WY

Built 1994 Load: 32.7 t ADT: 77

IRR BIA RTE 12

Fair

Over: LITTLE WIND RIVER

21.7 KM WEST OF RIVERTON, Fremont, WY

Built 1973 Load: 32.7 t ADT: 35

US 287

Fair

Over: Squaw Creek

Lander - Diversion Dam Jt, Fremont, WY

Built 1961 Load: 32.7 t ADT: 9,923

US 287

Fair

Over: Twin Creek

Muddy Gap Jct-WYO 28 Jct, Fremont, WY

Built 1972 Load: 32.7 t ADT: 602

US 20

Fair

Over: Bad Water Creek

Shoshoni - Thermopolis, Fremont, WY

Built 1970 Load: 32.7 t ADT: 2,615

WYO 28

Fair

Over: Little Popo Agie River

Farson - Jct Us 287, Fremont, WY

Built 1968 Load: 32.7 t ADT: 1,751

WYO 136

Fair

Over: Unnamed Draw

Riverton - Gas Hills, Fremont, WY

Built 1961 Load: 32.7 t ADT: 57

US 287

Fair

Over: Little Wind River

Lander - Diversion Dam Jt, Fremont, WY

Built 1963 Load: 32.7 t ADT: 635

Fr Cnty Rd 448

Fair

Over: Pilot Canal

22 Mi. N.W. Of Riverton, Fremont, WY

Built 1979 Load: 32.7 t ADT: 80

Fr Cnty Rd 20

Fair

Over: M F Popo Agie Overflow

0.5 Mi. S. Of Lander, Fremont, WY

Built 1978 Load: 32.7 t ADT: 426

Showing 1,301-1,350 of 3,181 bridges

Related

All states → | National rankings → | Understanding conditions → | SD bridges explained →
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges Editorial.

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). A "structurally deficient" rating is a repair-priority signal, not a closure or unsafe-to-cross designation. Consult a qualified civil engineer before making decisions based on this data.

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.