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

8th Street

Fair

Over: Canal No 2

Wheatland, Platte, WY

Built 1950 Load: 30.7 t ADT: 131

US 287

Fair

Over: UPRR

Laramie - Colo Line, Albany, WY

Built 1956 Load: 30.8 t ADT: 4,624

Snowy Range Road

Fair

Over: Laramie River

Laramie, Albany, WY

Built 1977 Load: 30.8 t ADT: 11,309

I-90 EBL

Fair

Over: Machinery Pass

Gillette - Moorcroft, Campbell, WY

Built 1976 Load: 30.8 t ADT: 3,552

WYO 59

Fair

Over: Spring Creek

Douglas - Reno Jct, Campbell, WY

Built 1979 Load: 30.8 t ADT: 2,891

WYO 51

Fair

Over: BNSF Railway

Gillette-Moorcroft, Campbell, WY

Built 2007 Load: 30.8 t ADT: 1,323

Cb Cnty Rd 2E

Fair

Over: Little Medicine Bow Rvr

3 Mi N.E Of Shirley Basin, Carbon, WY

Built 1991 Load: 30.8 t ADT: 17

I-25 SBL

Fair

Over: Machinery Pass

Douglas - Casper, Converse, WY

Built 1966 Load: 30.8 t ADT: 4,702

I-25 NBL

Fair

Over: Indian Creek

Glendo - Douglas, Converse, WY

Built 1972 Load: 30.8 t ADT: 3,471

I-25 NBL

Fair

Over: Machinery Pass

Glendo - Douglas, Converse, WY

Built 1972 Load: 30.8 t ADT: 3,471

I-25 SBL

Fair

Over: Machinery Pass

Glendo - Douglas, Converse, WY

Built 1972 Load: 30.8 t ADT: 3,318

I-90 EBL

Fair

Over: Beaver Creek

Moorcroft - Sundance, Crook, WY

Built 1960 Load: 30.8 t ADT: 2,134

I-90 WBL

Fair

Over: Beaver Creek

Moorcroft - Sundance, Crook, WY

Built 1960 Load: 30.8 t ADT: 1,900

US 287

Fair

Over: Little Popo Agie River

Muddy Gap Jct-WYO 28 Jct, Fremont, WY

Built 1969 Load: 30.8 t ADT: 602

WYO 789

Fair

Over: Wind River

Lander - Riverton, Fremont, WY

Built 1968 Load: 30.8 t ADT: 12,808

US 287

Fair

Over: Twin Creek

Muddy Gap Jct-WYO 28 Jct, Fremont, WY

Built 1973 Load: 30.8 t ADT: 602

US 26

Fair

Over: Poison Creek

Riverton - Shoshoni, Fremont, WY

Built 1977 Load: 30.8 t ADT: 3,460

US 85

Fair

Over: Rawhide Creek

Lingle - Lusk, Goshen, WY

Built 1974 Load: 30.8 t ADT: 1,306

WYO 431

Fair

Over: Gooseberry Creek

Nieber - Jct WYO 120, Hot Springs, WY

Built 1964 Load: 30.8 t ADT: 184

I-25 NBL

Fair

Over: Machinery Pass

Kaycee - Buffalo, Johnson, WY

Built 1968 Load: 30.8 t ADT: 1,758

I-25 SBL

Fair

Over: Machinery Pass

Kaycee - Buffalo, Johnson, WY

Built 1968 Load: 30.8 t ADT: 1,571

I-25 NBL

Fair

Over: Machinery Pass

Kaycee - Buffalo, Johnson, WY

Built 1968 Load: 30.8 t ADT: 1,967

I-90 EBL

Fair

Over: Lake Desmet Ditch

Sheridan - Buffalo, Johnson, WY

Built 1966 Load: 30.8 t ADT: 3,577

I-90 WBL

Fair

Over: Lake Desmet Ditch

Sheridan - Buffalo, Johnson, WY

Built 1966 Load: 30.8 t ADT: 3,758

I-90 EBL

Fair

Over: East Fork Dry Creek

Buffalo - Gillette, Johnson, WY

Built 1960 Load: 30.8 t ADT: 2,080

US 189

Fair

Over: UPRR

Lazeart Jct.-Kemmerer, Lincoln, WY

Built 1984 Load: 30.8 t ADT: 1,676

US 189

Fair

Over: UPRR

Lazeart Jct-Kemmerer, Lincoln, WY

Built 1984 Load: 30.8 t ADT: 1,676

WYO 220

Fair

Over: Dry Creek

Muddy Gap Jct-WYO 487 Jct, Natrona, WY

Built 1970 Load: 30.8 t ADT: 1,771

WYO 254

Fair

Over: Casper Creek

Salt Creek Conn Casper, Natrona, WY

Built 1979 Load: 30.8 t ADT: 4,809

WYO 487

Fair

Over: Bates Creek

Medicine Bow - Jt WYO 220, Natrona, WY

Built 1981 Load: 30.8 t ADT: 832

US 14A

Fair

Over: Bitter Creek

Garland-Powell, Park, WY

Built 1970 Load: 30.8 t ADT: 3,533

WYO 120

Fair

Over: Sage Creek

Thermopolis - Cody, Park, WY

Built 1970 Load: 30.8 t ADT: 2,654

WYO 295

Fair

Over: Garland Canal

Powell, Park, WY

Built 1949 Load: 30.8 t ADT: 3,420

WYO 296

Fair

Over: Lake Creek

Jct US 212 - Jct WYO 120, Park, WY

Built 1970 Load: 30.8 t ADT: 832

WYO 120

Fair

Over: Greybull River

Meeteetse, Park, WY

Built 2001 Load: 30.8 t ADT: 2,015

US 26

Fair

Over: BNSF Railway

Dwyer Jct - Guernsey, Platte, WY

Built 1966 Load: 30.8 t ADT: 1,840

Pl Cnty Rd 90

Fair

Over: Wheatland Creek

4 Mi. N. Of Wheatland, Platte, WY

Built 1975 Load: 30.8 t ADT: 609

WYO 320

Fair

Over: Laramie River

Wheatland-Dwyer Jct., Platte, WY

Built 1987 Load: 30.8 t ADT: 874

I-90 WBL

Fair

Over: Goose Creek

Sheridan Marginal, Sheridan, WY

Built 1960 Load: 30.8 t ADT: 3,907

US 87 Bus

Fair

Over: Little Goose Creek

Sheridan - Banner, Sheridan, WY

Built 1939 Load: 30.8 t ADT: 1,647

WYO 338

Fair

Over: BNSF / Goose Creek

Sheridan-Decker Road, Sheridan, WY

Built 1987 Load: 30.8 t ADT: 960

Sh Cnty Rd 139

Fair

Over: BNSF Railway

4 Mi N.E. Of Sheridan, Sheridan, WY

Built 1988 Load: 30.8 t ADT: 889

I-80 EBL

Fair

Over: Machinery Pass

Evanston - Green River, Sweetwater, WY

Built 1967 Load: 30.8 t ADT: 6,937

I-80 WBL

Fair

Over: Machinery Pass

Evanston - Green River, Sweetwater, WY

Built 1967 Load: 30.8 t ADT: 6,699

I-80 EBL

Fair

Over: Blacks Fork River

Evanston - Green River, Sweetwater, WY

Built 1967 Load: 30.8 t ADT: 7,490

WYO 28

Fair

Over: Little Sandy River

Farson - Jct Us 287, Sweetwater, WY

Built 1982 Load: 30.8 t ADT: 1,783

Ui Cnty Rd YC1

Fair

Over: Blacks Fork River

11 Mi S.W. Of Jct S-410, Uinta, WY

Built 1984 Load: 30.8 t ADT: 69

Ui Cnty Rd 261

Fair

Over: Ingersol Wash

Uinta County, Uinta, WY

Built 1985 Load: 30.8 t ADT: 72

Ui Cnty Rd 150

Fair

Over: Bear River

20 Miles S. Of Evanston, Uinta, WY

Built 1994 Load: 30.8 t ADT: 48

US 20

Fair

Over: Cottonwood Creek

Thermopolis - Worland, Washakie, WY

Built 1954 Load: 30.8 t ADT: 1,593

Showing 1,101-1,150 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.