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

WYO 257

Fair

Over: Unnamed Draw

Casper Streets, Natrona, WY

Built 2013 Load: 51.5 t ADT: 1,066

I-80 EBL

Fair

Over: UPRR

Laramie Maginal, Albany, WY

Built 1999 Load: 51.7 t ADT: 9,282

Bh Cnty Rd 57

Fair

Over: Unnamed Draw

10 M Se Jct 789 C Rd 55, Big Horn, WY

Built 1970 Load: 51.7 t ADT: 9

US 89

Fair

Over: Salt River

Afton - Alpine Jct, Lincoln, WY

Built 1960 Load: 51.7 t ADT: 6,794

I-25 NBL

Fair

Over: Middle Bear Creek

Wheatland - Glendo, Platte, WY

Built 1961 Load: 51.7 t ADT: 3,471

I-25 SBL

Fair

Over: Middle Bear Creek

Wheatland - Glendo, Platte, WY

Built 1961 Load: 51.7 t ADT: 3,318

Sb Cnty Rd 150

Fair

Over: Apex Ditch

7 Mi. N.W. Of Daniel Jct, Sublette, WY

Built 1989 Load: 51.7 t ADT: 49

Sb Cnty Rd 108

Fair

Over: Jack Creek

1 Mi. N.E. Of Bondurant, Sublette, WY

Built 1992 Load: 51.7 t ADT: 145

SOUTH ENTRANCE ROA

Fair

Over: CRAWFISH CREEK

1.2 MILES NORTH OF SOUTH, Teton, WY

Built 1934 Load: 51.7 t ADT: 3,952

I-80 Bus

Fair

Over: Blacks Fork River

I-80 Jct - Fort Bridger, Uinta, WY

Built 2006 Load: 51.7 t ADT: 2,772

WYO 59

Fair

Over: Horse Creek

Gillette - Montan Line, Campbell, WY

Built 2015 Load: 52.2 t ADT: 994

Ln Cnty Rd 111

Fair

Over: Salt River

2 Mi Nw Of Etna, Lincoln, WY

Built 1994 Load: 52.2 t ADT: 251

Cl Cnty Rd 96

Fair

Over: Dry Donkey Creek

10 Mi. E. Of Gillette, Campbell, WY

Built 1978 Load: 52.6 t ADT: 150

1st Street

Fair

Over: Smiths Fork River

Mountain View Streets, Uinta, WY

Built 1969 Load: 52.6 t ADT: 71

Warren Peak Road

Fair

Over: Beaver Creek

4 Miles East Of Alva, Crook, WY

Built 1990 Load: 52.9 t ADT: 26

US 20

Fair

Over: Niobrara River

Lusk Streets, 3Rd Street, Niobrara, WY

Built 2003 Load: 52.9 t ADT: 970

Sw Cnty Rd 8

Fair

Over: Green River

Fontenelle - Co. Line, Sweetwater, WY

Built 1991 Load: 53.1 t ADT: 251

Al Cnty Rd 610

Fair

Over: Rock Creek

14 Mi N Of Rock River, Albany, WY

Built 1996 Load: 53.5 t ADT: 21

Al Cnty Rd 57A

Fair

Over: Little Laramie River

14 Mi E.Ne. Of Centennial, Albany, WY

Built 1999 Load: 53.5 t ADT: 51

Ln Cnty Rd 104

Fair

Over: Salt River

4 Miles S. Of Alpine, Lincoln, WY

Built 1991 Load: 53.5 t ADT: 120

Ni Cnty Rd 6

Fair

Over: Alkali Creek

3 Mi. Nw Of Mule Crk Jct, Niobrara, WY

Built 1997 Load: 53.5 t ADT: 33

GRAND LOOP ROAD

Fair

Over: GIBBON RIVER

20.2 MI. SOUTH OF MAMMOTH, Park, WY

Built 1960 Load: 53.5 t ADT: 1,807

WYO 220

Fair

Over: North Platte River

13 Mi Sw Of Casper, Natrona, WY

Built 2002 Load: 53.9 t ADT: 3,066

Pa Cnty Rd 4DT

Fair

Over: Sunshine Supply Canal

14 Miles Sw Of Meeteetse, Park, WY

Built 1973 Load: 54.0 t ADT: 175

WYO 256

Fair

Over: North Platte River

Jct Us 20 2687 - North, Natrona, WY

Built 1971 Load: 54.2 t ADT: 3,014

Cr Cnty Rd 180

Fair

Over: Arch Creek

7 Mi. N.E. Of Pine Haven, Crook, WY

Built 1992 Load: 54.4 t ADT: 126

GRAND LOOP ROAD

Fair

Over: BRIDGE BAY INLET

2.0 MI. SOUTH OF LAKE JCT, Teton, WY

Built 1961 Load: 54.4 t ADT: 1,807

Co Cnty Rd 4

Fair

Over: Red Draw

17 Mi. S.W. Of Douglas, Converse, WY

Built 1996 Load: 55.3 t ADT: 98

WYO 237

Fair

Over: West Channel Salt River

Grover-Auburn Road, Lincoln, WY

Built 2004 Load: 55.3 t ADT: 548

Sh Cnty Rd 2

Fair

Over: North Piney Creek

2 Miles W. Of Storey, Sheridan, WY

Built 1914 Load: 55.3 t ADT: 31

Pa Cnty Rd 4DT

Fair

Over: Wood River

12 Miles Sw Of Meteetse, Park, WY

Built 1925 Load: 55.8 t ADT: 175

Connecticut Ave

Fair

Over: Dead Horse Canyon Creek

Rock Springs, Sweetwater, WY

Built 1995 Load: 55.9 t ADT: 1,162

Cb Cnty Rd 291

Fair

Over: Austin Creek

12 Miles N.W. Of Hanna, Carbon, WY

Built 1948 Load: 56.2 t ADT: 121

US 89

Fair

Over: Etna Irrigation Canal

Afton - Alpine Jct, Lincoln, WY

Built 1960 Load: 56.2 t ADT: 6,794

Avoca Avenue

Fair

Over: Little Goose Creek

Sheridan Streets, Sheridan, WY

Built 2005 Load: 56.2 t ADT: 2,886

Cl Cnty Rd 30

Fair

Over: BNSF Railway

10 Mi. S.E. Of Reno Jct, Campbell, WY

Built 1981 Load: 57.2 t ADT: 877

US 14A

Fair

Over: Shoshone River

Cody - Powell, Park, WY

Built 1957 Load: 57.2 t ADT: 7,149

US 89

Fair

Over: Salt River

Afton - Alpine Jct, Lincoln, WY

Built 1960 Load: 57.6 t ADT: 6,794

U.S. ROUTE 89

Fair

Over: CHRISTIAN CREEK

5 miles west of Moran Jun, Teton, WY

Built 1963 Load: 58.0 t ADT: 5,000

U.S. ROUTE 89

Fair

Over: PACIFIC CREEK

1.5 miles west of Moran J, Teton, WY

Built 1958 Load: 58.0 t ADT: 5,000

US 30 / I-80 Bus

Fair

Over: Spring Creek

Laramie - Grand Ave, Albany, WY

Built 1981 Load: 58.1 t ADT: 14,742

US 18

Fair

Over: Niobrara River

Lusk, Niobrara, WY

Built 1988 Load: 58.1 t ADT: 3,162

WYO 296

Fair

Over: Sunlight Creek

Clarks Fork Road, Park, WY

Built 1985 Load: 58.1 t ADT: 832

US 14

Fair

Over: Dry Creek

Cody - Jct WYO 310, Big Horn, WY

Built 1968 Load: 59.0 t ADT: 1,783

Absoroka Drive

Fair

Over: Wind River

Dubois, Fremont, WY

Built 2019 Load: 59.4 t ADT: 2,933

Fawn Creek Road

Fair

Over: Beaver Creek

17 Mi. N. Of Sundance, Crook, WY

Built 2000 Load: 60.8 t ADT: 61

US 30

Fair

Over: UPRR

Cheyenne - Pine Bluffs, Laramie, WY

Built 1954 Load: 60.8 t ADT: 3,643

US 16

Fair

Over: East Tensleep Creek

Buffalo-Tensleep Road, Big Horn, WY

Built 1987 Load: 61.7 t ADT: 797

Cr Cnty Rd 268

Fair

Over: Inyan Kara Creek

16 Mi West Of Sundance, Crook, WY

Built 1991 Load: 61.7 t ADT: 74

Sb Cnty Rd 190

Fair

Over: Duck Creek

1 Mile W Of Pinedale, Sublette, WY

Built 2003 Load: 62.6 t ADT: 49

Showing 2,101-2,150 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.