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-90 EBL

Fair

Over: Arch Creek

Moorcroft - Sundance, Crook, WY

Built 1963 Load: 28.8 t ADT: 2,063

I-90 WBL

Fair

Over: Arch Creek

Moorcroft - Sundance, Crook, WY

Built 1963 Load: 28.8 t ADT: 1,833

US 87 Bus

Fair

Over: Wheatland Canal No 2

Wheatland Streets, Platte, WY

Built 1996 Load: 28.8 t ADT: 3,432

I-80 EBL

Fair

Over: Machinery Pass

Rawlins - Laramie, Albany, WY

Built 1968 Load: 29.0 t ADT: 4,887

I-80 WBL

Fair

Over: Machinery Pass

Rawlins - Laramie, Albany, WY

Built 1968 Load: 29.0 t ADT: 6,206

I-80 WBL

Fair

Over: Machinery Pass

Rawlins - Laramie, Carbon, WY

Built 1967 Load: 29.0 t ADT: 5,747

I-80 EBL

Fair

Over: Machinery Pass

Rawlins - Laramie, Carbon, WY

Built 1969 Load: 29.0 t ADT: 5,820

I-80 WBL

Fair

Over: Machinery Pass

Rawlins - Laramie, Carbon, WY

Built 1969 Load: 29.0 t ADT: 5,905

US 287

Fair

Over: Muddy Creek

Muddy Gap Jct-WYO 28 Jct, Carbon, WY

Built 1968 Load: 29.0 t ADT: 546

I-25 NBL

Fair

Over: Deer Creek

Douglas - Casper, Converse, WY

Built 1967 Load: 29.0 t ADT: 4,193

WYO 59

Fair

Over: Box Creek

Douglas - Reno Jct, Converse, WY

Built 1979 Load: 29.0 t ADT: 2,840

Fr Cnty Rd 286

Fair

Over: Sweetwater River

10 Mi Ne Of Jeffrey City, Fremont, WY

Built 1984 Load: 29.0 t ADT: 127

I-25 NBL

Fair

Over: Machinery Pass

Casper - Kaycee, Johnson, WY

Built 1965 Load: 29.0 t ADT: 1,499

I-25 SBL

Fair

Over: Machinery Pass

Casper - Kaycee, Johnson, WY

Built 1965 Load: 29.0 t ADT: 1,439

I-90 WBL

Fair

Over: East Fork Dry Creek

Buffalo - Gillette, Johnson, WY

Built 1960 Load: 29.0 t ADT: 2,000

I-25 SBL

Fair

Over: Horse Creek

Cheyenne - Chugwater, Laramie, WY

Built 1968 Load: 29.0 t ADT: 3,277

I-25 NBL

Fair

Over: Little Bear Creek

Cheyenne - Chugwater, Laramie, WY

Built 1968 Load: 29.0 t ADT: 3,271

I-25 SBL

Fair

Over: Little Bear Creek

Cheyenne - Chugwater, Laramie, WY

Built 1968 Load: 29.0 t ADT: 3,277

WYO 211

Fair

Over: South Fork Horse Creek

Cheyenne - Chugwater, Laramie, WY

Built 1955 Load: 29.0 t ADT: 135

I-80 EBL Off Ramp

Fair

Over: Crow Creek

College Drive Intg, Laramie, WY

Built 1976 Load: 29.0 t ADT: 4,139

WYO 272

Fair

Over: Lance Creek

Jct WYO 270 - North, Niobrara, WY

Built 1969 Load: 29.0 t ADT: 27

Sh Cnty Rd 89

Fair

Over: Wolf Creek

6 Miles N.W. Of Beckton, Sheridan, WY

Built 1986 Load: 29.0 t ADT: 187

Sh Cnty Rd 81

Fair

Over: Big Goose Creek

9 Mi S.W. Of Sheridan, Sheridan, WY

Built 1960 Load: 29.0 t ADT: 111

Spring Drive

Fair

Over: Killpecker Creek

Rock Springs, Sweetwater, WY

Built 1975 Load: 29.0 t ADT: 1,226

U.S. ROUTE 89

Fair

Over: PILGRIM CREEK

7.9 miles northwest of Mo, Teton, WY

Built 1961 Load: 29.0 t ADT: 5,000

FIREHOLE LAKE DRIV

Fair

Over: THERMAL AREA DRAINAGE

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

Built 1935 Load: 29.0 t ADT: 1,500

I-80 WBL

Fair

Over: Blacks Fork River

Evanston - Green River, Uinta, WY

Built 1968 Load: 29.0 t ADT: 6,304

I-80 WBL

Fair

Over: Smiths Fork Creek

Evanston - Green River, Uinta, WY

Built 1968 Load: 29.0 t ADT: 6,304

WYO 450

Fair

Over: Mush Creek

Newcastle-Clareton Road, Weston, WY

Built 1989 Load: 29.0 t ADT: 763

I-25 NBL

Fair

Over: North Platte River

Douglas Marginal, Converse, WY

Built 1966 Load: 29.1 t ADT: 3,618

I-25 NBL

Fair

Over: Machinery Pass

Colorado Line - Cheyenne, Laramie, WY

Built 1963 Load: 29.4 t ADT: 9,466

WYO 789

Fair

Over: UPRR

Creston Jct - Colo Line, Sweetwater, WY

Built 1965 Load: 29.4 t ADT: 1,193

NO DATA ENTERED

Fair

Over: GREYS RIVER

NO DATA ENTERED, Lincoln, WY

Built 2010 Load: 29.5 t ADT: 50

FOREST ROAD 30400

Fair

Over: GROS VENTRE RIVER

20 MI. NE. OF JACKSON WY, Teton, WY

Built 1969 Load: 29.5 t ADT: 450

US 20

Fair

Over: BNSF Railway

Shoshoni - Thermopolis, Hot Springs, WY

Built 1959 Load: 29.7 t ADT: 2,647

Pa Cnty Rd 1BH

Fair

Over: Clarks Fork Yellowstone

7 Mi. N.E. Of Clark, Park, WY

Built 1972 Load: 29.7 t ADT: 33

US 191

Fair

Over: Hoback River

Daniel Jct - Hoback Jct, Sublette, WY

Built 1965 Load: 29.7 t ADT: 2,444

FDR

Fair

Over: BROOKS LAKE CREEK

NO DATA ENTERED, Fremont, WY

Built 1973 Load: 29.8 t ADT: 50

La Cnty Rd 123-1

Fair

Over: Clear Creek

Southwest Drive Cheyenne, Laramie, WY

Built 1965 Load: 29.8 t ADT: 2,111

WYO 13

Fair

Over: Rock Creek

Rock River - Jct I-80, Albany, WY

Built 1966 Load: 29.9 t ADT: 192

Al Cnty Rd 713

Fair

Over: North Laramie River

1 Mi S Of Garrett, Albany, WY

Built 2010 Load: 29.9 t ADT: 19

US 14A

Fair

Over: Yellowtail Reservoir

Lovell - Burgess Jct, Big Horn, WY

Built 1971 Load: 29.9 t ADT: 810

I-90 WBL

Fair

Over: Machinery Pass

Gillette - Moorcroft, Campbell, WY

Built 1976 Load: 29.9 t ADT: 3,644

US 14

Fair

Over: Horse Creek

Ucross - Jct WYO 59, Campbell, WY

Built 1983 Load: 29.9 t ADT: 1,318

I-80 EBL

Fair

Over: Medicine Bow River

Rawlins - Laramie, Carbon, WY

Built 1968 Load: 29.9 t ADT: 5,745

I-25 NBL

Fair

Over: Machinery Pass

Glendo - Douglas, Converse, WY

Built 1971 Load: 29.9 t ADT: 3,471

US 18

Fair

Over: BNSF Railway

Orin Jct - Lusk, Converse, WY

Built 1977 Load: 29.9 t ADT: 2,072

WYO 95

Fair

Over: Sand Creek

Glenrock - Jct WYO 93, Converse, WY

Built 1977 Load: 29.9 t ADT: 664

Co Cnty Rd 29

Fair

Over: Laprele Creek

10 Miles N.W. Of Douglas, Converse, WY

Built 1992 Load: 29.9 t ADT: 145

I-90 EBL

Fair

Over: Donkey Creek

Gillette - Moorcroft, Crook, WY

Built 1969 Load: 29.9 t ADT: 2,627

Showing 1,001-1,050 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.