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

Water Street

Poor

Over: Canal No 2

9Th And Water Street, Platte, WY

Built 1950 Load: 31.4 t ADT: 131

Fr Cnty Rd 476

Poor

Over: Pilot Canal

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

Built 1970 Load: 31.5 t ADT: 127

Pl Cnty Rd 47

Poor

Over: North Laramie River

5 Mi. N. Of Wheatland, Platte, WY

Built 1990 Load: 31.5 t ADT: 10

Wa Cnty Rd R34

Poor

Over: Spillway Hanover Canal

10 Miles N.E. Of Worland, Washakie, WY

Built 1929 Load: 31.5 t ADT: 117

I-25 SBL

Poor

Over: South Fork Bear Creek

Cheyenne - Chugwater, Laramie, WY

Built 1977 Load: 31.8 t ADT: 3,277

I-25 SBL

Poor

Over: North Laramie River

Wheatland - Glendo, Platte, WY

Built 1966 Load: 31.8 t ADT: 3,390

WYO 89

Poor

Over: Bear River Overflow

Evanston - Utah Line, Uinta, WY

Built 1978 Load: 31.8 t ADT: 1,935

I-90 WBL

Poor

Over: Machinery Pass

Gillette - Moorcroft, Campbell, WY

Built 1976 Load: 32.3 t ADT: 3,644

Jo Cnty Rd 1

Poor

Over: Rock Creek

4 Mi N.E. Of Buffalo, Johnson, WY

Built 1994 Load: 32.4 t ADT: 165

WYO 59

Poor

Over: Mikes Draw

Douglas-Bill, Converse, WY

Built 1980 Load: 32.7 t ADT: 2,840

Go Cnty Rd 136

Poor

Over: Unnamed Draw

5.5 Mi. N. Of Jay-Em, Goshen, WY

Built 1983 Load: 32.7 t ADT: 68

Go Cnty Rd 43E

Poor

Over: Springer Main Lateral

2.5 Miles N.E. Of Yoder, Goshen, WY

Built 1973 Load: 32.7 t ADT: 7

Go Cnty Rd 29C

Poor

Over: Fort Laramie Canal

3 Mi. N. Of Veteran, Goshen, WY

Built 1973 Load: 32.7 t ADT: 168

WYO 120

Poor

Over: Buffalo Creek

Thermop-Meeteetse, Hot Springs, WY

Built 1992 Load: 32.7 t ADT: 1,423

WYO 220

Poor

Over: Sweetwater River

Muddy Gap Jct-WYO 487 Jct, Natrona, WY

Built 1970 Load: 32.7 t ADT: 1,771

WYO 374

Poor

Over: Grease Wood Draw

Jct I-80 - Green River, Sweetwater, WY

Built 1942 Load: 32.7 t ADT: 2,369

Sw Cnty Rd 51

Poor

Over: Little Bitter Creek

6.5 Mi.Sw Of Rock Springs, Sweetwater, WY

Built 1975 Load: 32.7 t ADT: 2,234

WYO 414

Poor

Over: Unnamed Draw

Jct I-80 - Utah Line, Uinta, WY

Built 1961 Load: 32.7 t ADT: 593

US 16

Poor

Over: E Branch Wind Creek

Moorcroft - Upton, Weston, WY

Built 1966 Load: 32.7 t ADT: 1,326

Co Cnty Rd 22

Poor

Over: North Platte River

5 Miles West Of Glenrock, Converse, WY

Built 1992 Load: 33.3 t ADT: 85

Broadway Street

Poor

Over: Big Horn River

Thermopolis, Hot Springs, WY

Built 1968 Load: 33.3 t ADT: 1,685

US 14A

Poor

Over: Sand Draw

Lovell - Burgess Jct, Big Horn, WY

Built 1975 Load: 33.6 t ADT: 1,557

S 6th Street

Poor

Over: UPRR

6Th Street Rawlins, Carbon, WY

Built 1966 Load: 33.6 t ADT: 1,984

Cb Cnty Rd 1

Poor

Over: Medicine Bow River

4 Mi. S. Of Medicine Bow, Carbon, WY

Built 1982 Load: 33.6 t ADT: 82

I-180 NBL

Poor

Over: UPRR

Cheyenne, Central Ave, Laramie, WY

Built 1982 Load: 33.6 t ADT: 9,268

Sb Cnty Rd 141

Poor

Over: Piney Creek

T30N R112W S36, Sublette, WY

Built 1986 Load: 33.6 t ADT: 129

Cr Cnty Rd 112

Poor

Over: Donkey Creek

7 Miles W. Of Moorcroft, Crook, WY

Built 1980 Load: 33.9 t ADT: 22

Sb Cnty Rd 136

Poor

Over: New Fork River

2 Mi. Nw Of Boulder, Sublette, WY

Built 1989 Load: 34.2 t ADT: 260

US 191

Poor

Over: Hoback River

Daniel Jct - Hoback Jct, Teton, WY

Built 1966 Load: 34.5 t ADT: 2,444

US 30

Poor

Over: Floodwater Creek

Bosler Jct - Laramie, Albany, WY

Built 1946 Load: 35.4 t ADT: 1,510

US 18

Poor

Over: Lost Creek

Orin Jct - Lusk, Converse, WY

Built 1964 Load: 35.4 t ADT: 2,101

WEST ENTRANCE ROAD

Poor

Over: MADISON RIVER

7.4 MILES EAST OF WEST EN, Teton, WY

Built 1958 Load: 35.4 t ADT: 2,525

I-25 SBL

Poor

Over: South Fork Powder River

Casper - Kaycee, Johnson, WY

Built 1960 Load: 35.9 t ADT: 1,439

I-90 WBL

Poor

Over: Machinery Pass

Montana Line - Sheridan, Sheridan, WY

Built 1983 Load: 36.3 t ADT: 2,076

WYO 376

Poor

Over: UPRR / Bitter Creek

Rock Springs Circumferent, Sweetwater, WY

Built 1981 Load: 36.3 t ADT: 2,593

W 11th Street

Poor

Over: Big Goose Creek

Sheridan Streets, Sheridan, WY

Built 1981 Load: 36.9 t ADT: 1,752

WYO 28

Poor

Over: Green River

Farson-Fontenelle Road, Sweetwater, WY

Built 1985 Load: 37.2 t ADT: 548

Ui Cnty Rd 241

Poor

Over: Smiths Fork Creek

2 Mi. E. Of Mountain View, Uinta, WY

Built 1983 Load: 38.1 t ADT: 181

WYO 220

Poor

Over: Casper Canal

Muddy Gap Jct-WYO 487 Jct, Natrona, WY

Built 1967 Load: 39.0 t ADT: 3,066

WYO 530 SBL

Poor

Over: Green River

Green River, Sweetwater, WY

Built 1982 Load: 39.0 t ADT: 9,754

W Richards Street

Poor

Over: North Platte River

Richards Street (Douglas), Converse, WY

Built 1984 Load: 42.1 t ADT: 5,005

Sb Cnty Rd 123

Poor

Over: New Fork River

2 Iles South Of Pinedale, Sublette, WY

Built 1995 Load: 42.3 t ADT: 840

I-80 Bus

Poor

Over: UPRR

Evanston Streets, Uinta, WY

Built 1984 Load: 45.4 t ADT: 5,995

Te Cnty Rd 2

Poor

Over: Mosquito Creek

T40N R117W S10, Teton, WY

Built 1955 Load: 46.3 t ADT: 877

Converse Avenue

Poor

Over: Dry Creek

Converse Avenue, Laramie, WY

Built 1992 Load: 47.0 t ADT: 9,543

N 2nd Street

Poor

Over: Antelope Creek

T32N R071W S09, Converse, WY

Built 1985 Load: 57.2 t ADT: 398

Wa Cnty Rd 580

Structurally Deficient

Over: East Fork Sand Creek

8 Mi+East Of Worland, Washakie, WY

Built 1935 ADT: 4

We Cnty Rd 1A

Structurally Deficient

Over: Beaver Creek

23 Miles Se Of Newcastle, Weston, WY

Built 1933 ADT: 136

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

Showing 3,101-3,150 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.