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

Cr Cnty Rd 164

Fair

Over: Little Missouri River

7 Mi N. Of Oshoto, Crook, WY

Built 1990 Load: 33.6 t ADT: 25

WYO 789

Fair

Over: Beaver Creek

Lander - Riverton, Fremont, WY

Built 1976 Load: 33.6 t ADT: 3,514

WYO 28

Fair

Over: Beaver Creek

Farson-Lander, Fremont, WY

Built 1986 Load: 33.6 t ADT: 1,751

US 85

Fair

Over: Fort Laramie Canal

Cheyenne - Torrington, Goshen, WY

Built 1959 Load: 33.6 t ADT: 2,075

US 85

Fair

Over: Interstate Canal

Lingle - Lusk, Goshen, WY

Built 1955 Load: 33.6 t ADT: 1,306

US 85

Fair

Over: Six Mile Creek

Lingle - Lusk, Goshen, WY

Built 1974 Load: 33.6 t ADT: 1,306

US 85

Fair

Over: Rawhide Creek

Lingle - Lusk, Goshen, WY

Built 1980 Load: 33.6 t ADT: 1,306

US 20

Fair

Over: Sand Draw

Thermopolis - Worland, Hot Springs, WY

Built 1948 Load: 33.6 t ADT: 1,593

I-90 EBL

Fair

Over: Clear Creek

Buffalo Marginal, Johnson, WY

Built 1959 Load: 33.6 t ADT: 2,127

I-90 WBL

Fair

Over: Clear Creek

Buffalo Marginal, Johnson, WY

Built 1959 Load: 33.6 t ADT: 2,077

Jo Cnty Rd 40

Fair

Over: Clear Creek

3 Miles N.,E. Of Buffalo, Johnson, WY

Built 1986 Load: 33.6 t ADT: 89

WYO 196

Fair

Over: Muddy Creek

Kaycee-Buffalo, Johnson, WY

Built 1989 Load: 33.6 t ADT: 51

WYO 196

Fair

Over: N F Crazy Woman Creek

Kaycee-Buffalo, Johnson, WY

Built 1989 Load: 33.6 t ADT: 51

MISSILE DRIVE WEST

Fair

Over: CROW CREEK

0.30 miles south of Randa, Laramie, WY

Built 1987 Load: 33.6 t ADT: 700

I-25 NBL

Fair

Over: Middle Fork Bear Creek

Cheyenne - Chugwater, Laramie, WY

Built 1977 Load: 33.6 t ADT: 3,271

I-25 SBL

Fair

Over: Middle Fork Bear Creek

Cheyenne - Chugwater, Laramie, WY

Built 1977 Load: 33.6 t ADT: 3,277

WYO 238

Fair

Over: Salt River

Jct WYO 89 - Auburn, Lincoln, WY

Built 1964 Load: 33.6 t ADT: 811

Ln Cnty Rd 207

Fair

Over: Bear River

1 Mile S.W. Of Cokeville, Lincoln, WY

Built 1989 Load: 33.6 t ADT: 359

WYO 387

Fair

Over: Salt Creek

Jct I-25 - Reno Jct, Natrona, WY

Built 1952 Load: 33.6 t ADT: 427

WYO 220

Fair

Over: Rush Creek

Muddy Gap Jct-WYO 487 Jct, Natrona, WY

Built 1968 Load: 33.6 t ADT: 1,771

WYO 220

Fair

Over: Bates Creek

Muddy Gap Jct-WYO 487 Jct, Natrona, WY

Built 1963 Load: 33.6 t ADT: 3,066

US 20

Fair

Over: Casper Creek

Casper, Natrona, WY

Built 1977 Load: 33.6 t ADT: 11,513

I-25 SBL

Fair

Over: Castle Creek

Casper - Kaycee, Natrona, WY

Built 1980 Load: 33.6 t ADT: 1,464

I-25 NBL

Fair

Over: Castle Creek

Casper - Kaycee, Natrona, WY

Built 1980 Load: 33.6 t ADT: 1,515

Na Cnty Rd 408

Fair

Over: North Platte River

7.5 Miles S.W. Of Alcova, Natrona, WY

Built 1957 Load: 33.6 t ADT: 83

US 20

Fair

Over: Middle Fork Casper Creek

Casper-Shoshoni, Natrona, WY

Built 1984 Load: 33.6 t ADT: 2,908

Na Cnty Rd 201

Fair

Over: Poison Spider Creek

11 Miles West Of Casper, Natrona, WY

Built 1991 Load: 33.6 t ADT: 937

Ni Cnty Rd 13

Fair

Over: Lance Creek

2 Miles N.E. Of Cow Creek, Niobrara, WY

Built 1983 Load: 33.6 t ADT: 17

BEARTOOTH HIGHWAY

Fair

Over: CLARKS FORK YELLOWSTONE

13.4 MI. EAST OF NE ENTRA, Park, WY

Built 1965 Load: 33.6 t ADT: 1,775

BEARTOOTH HIGHWAY

Fair

Over: CRAZY CREEK

15.1 MI. EAST OF NE ENTRA, Park, WY

Built 1965 Load: 33.6 t ADT: 1,775

WYO 296

Fair

Over: Dead Indian Creek

Clarks Fork Road, Park, WY

Built 1989 Load: 33.6 t ADT: 393

I-25 NBL

Fair

Over: Elkhorn Creek

Glendo - Douglas, Platte, WY

Built 1973 Load: 33.6 t ADT: 3,471

I-25 SBL

Fair

Over: Elkhorn Creek

Glendo - Douglas, Platte, WY

Built 1973 Load: 33.6 t ADT: 3,318

WYO 34

Fair

Over: Lateral No 1

Bosler Jct-Wheatland, Platte, WY

Built 1983 Load: 33.6 t ADT: 702

WYO 337

Fair

Over: Goose Creek

Ft Mackenzie Rd Sheridan, Sheridan, WY

Built 1971 Load: 33.6 t ADT: 3,143

WYO 193

Fair

Over: North Piney Creek

Banner-Story, Sheridan, WY

Built 1986 Load: 33.6 t ADT: 1,510

Sh Cnty Rd 269

Fair

Over: Powder River

16 Miles N. Of Arvada, Sheridan, WY

Built 1989 Load: 33.6 t ADT: 121

US 191

Fair

Over: New Fork River

Pinedale-Daniel Jct, Sublette, WY

Built 1993 Load: 33.6 t ADT: 2,924

WYO 430

Fair

Over: North Alkali Creek

Rock Springs - Colo Line, Sweetwater, WY

Built 1956 Load: 33.6 t ADT: 243

Ui Cnty Rd 204

Fair

Over: Grove Canal

6 Mi. S.E. Of Piedmont, Uinta, WY

Built 1985 Load: 33.6 t ADT: 71

Wa Cnty Rd L15

Fair

Over: Big Horn Canal

2-3 Miles S.W Of Worland, Washakie, WY

Built 1992 Load: 33.6 t ADT: 21

US 16

Fair

Over: Turner Creek

Upton - Newcastle, Weston, WY

Built 1971 Load: 33.6 t ADT: 1,673

WYO 24

Fair

Over: Miller Creek

Jct US 14 - Hulett, Crook, WY

Built 1977 Load: 33.7 t ADT: 1,388

I-25 SBL

Fair

Over: Clear Creek

Cheyenne Marginal, Laramie, WY

Built 1964 Load: 33.7 t ADT: 11,542

FSR 16

Fair

Over: SOUTH TONGUE RIVER

9.7 MI ON FSR 16, Sheridan, WY

Built 1959 Load: 33.7 t ADT: 36

Bh Cnty Rd 199

Fair

Over: Shell Creek

6 Mi. E. Of Greybull, Big Horn, WY

Built 1985 Load: 33.9 t ADT: 127

Cb Cnty Rd 291

Fair

Over: Medicine Bow River

10 Miles N. Of Hanna, Carbon, WY

Built 1983 Load: 33.9 t ADT: 121

Cb Cnty Rd 404

Fair

Over: Pass Creek

T19N R082W S28, Carbon, WY

Built 1986 Load: 33.9 t ADT: 62

US 85

Fair

Over: Lodgepole Creek

Cheyenne-Torrington, Laramie, WY

Built 1987 Load: 33.9 t ADT: 4,001

Belaire Avenue

Fair

Over: Henderson Drainage Ditch

CT050-4, Laramie, WY

Built 1978 Load: 33.9 t ADT: 201

Showing 1,601-1,650 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.