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

S Sheridan Avenue

Fair

Over: Little Goose Creek

City Of Sheridan, Sheridan, WY

Built 1990 Load: 35.4 t ADT: 5,674

US 14

Fair

Over: South Fork Tongue River

Burgess Jct-Dayton, Sheridan, WY

Built 1994 Load: 35.4 t ADT: 767

WYO 334

Fair

Over: Little Goose Creek

Brundage Lane-Sheridan, Sheridan, WY

Built 1993 Load: 35.4 t ADT: 7,038

WYO 28

Fair

Over: Eden Canal

Farson - Lander Road, Sweetwater, WY

Built 1985 Load: 35.4 t ADT: 1,270

Stagecoach Blvd

Fair

Over: Killpecker Creek

Rock Springs Streets, Sweetwater, WY

Built 1987 Load: 35.4 t ADT: 4,071

I-80 / US 30 Bus

Fair

Over: Bitter Creek

Rock Springs, Dewar Drive, Sweetwater, WY

Built 1991 Load: 35.4 t ADT: 14,199

U.S. ROUTE 89

Fair

Over: GROS VENTRE IRRIGATION D

6.3 miles north of Jackso, Teton, WY

Built 1963 Load: 35.4 t ADT: 8,000

CLIMBERS RANCH ROA

Fair

Over: COTTONWOOD CREEK

4.3 miles northwest of Mo, Teton, WY

Built 2005 Load: 35.4 t ADT: 30

High School Road

Fair

Over: Flat Creek

1 Mile S. Of Jackson, Teton, WY

Built 1983 Load: 35.4 t ADT: 4,092

WYO 411

Fair

Over: Blacks Fork River

Mountain View - Milburne, Uinta, WY

Built 1966 Load: 35.4 t ADT: 737

Ui Cnty Rd

Fair

Over: Bear River

Evanston, Uinta, WY

Built 1988 Load: 35.4 t ADT: 3,346

WYO 450

Fair

Over: Black Thunder Creek

Newcastle - Jct WYO 59, Weston, WY

Built 1981 Load: 35.4 t ADT: 723

WYO 116 S

Fair

Over: Iron Creek

Upton-Clareton Road, Weston, WY

Built 1990 Load: 35.4 t ADT: 309

I-25 NBL

Fair

Over: Laprele Creek

Douglas - Casper, Converse, WY

Built 1958 Load: 35.6 t ADT: 4,682

I-25 NBL

Fair

Over: South Fork Powder River

Casper - Kaycee, Johnson, WY

Built 1960 Load: 35.6 t ADT: 1,499

Wa Cnty Rd L10

Fair

Over: Hanover Canal

2 miles NE of Worland, Washakie, WY

Built 2016 Load: 35.6 t ADT: 301

I-80 WBL

Fair

Over: E F Medicine Bow River

Rawlins - Laramie, Carbon, WY

Built 1969 Load: 35.9 t ADT: 5,833

Cb Cnty Rd 270

Fair

Over: Difficulty Creek

13 Mi. N.E. Of Hanna, Carbon, WY

Built 1985 Load: 35.9 t ADT: 97

Go Cnty Rd 37C

Fair

Over: Fort Laramie Canal

1 Mi. N.W. Of Yoder, Goshen, WY

Built 1997 Load: 36.0 t ADT: 215

FOREST ROAD 10125

Fair

Over: SHEEP CREEK

NO DATA ENTERED, Lincoln, WY

Built 1967 Load: 36.0 t ADT: 50

FOREST ROAD 10125

Fair

Over: SHEEP CREEK

NO DATA ENTERED, Lincoln, WY

Built 1967 Load: 36.0 t ADT: 75

I-90 WBL

Fair

Over: Machinery Pass

Montana Line - Sheridan, Sheridan, WY

Built 1982 Load: 36.0 t ADT: 3,535

Al Cnty Rd 740

Fair

Over: Laramie River

2 Miles N. Of Bosler, Albany, WY

Built 1993 Load: 36.3 t ADT: 16

Bh Cnty Rd R5D

Fair

Over: Greybull River

Lanes 40 41, Big Horn, WY

Built 1994 Load: 36.3 t ADT: 74

WYO 387

Fair

Over: Hay Creek

Midwest - Reno Jct, Campbell, WY

Built 1982 Load: 36.3 t ADT: 2,688

Cl Cnty Rd 98

Fair

Over: Little Powder River

50 Mi N Of Gillette, Campbell, WY

Built 1987 Load: 36.3 t ADT: 17

WYO 130

Fair

Over: Pass Creek

Walcott Jct - Saratoga, Carbon, WY

Built 1978 Load: 36.3 t ADT: 1,529

Arrowhead Drive

Fair

Over: Cadwell Slough

Saratoga, Carbon, WY

Built 2001 Load: 36.3 t ADT: 59

WYO 95

Fair

Over: Machinery Pass

Glenrock - Jct WYO 93, Converse, WY

Built 1977 Load: 36.3 t ADT: 664

WYO 59

Fair

Over: BNSF Railway

Douglas - Reno Jct, Converse, WY

Built 1979 Load: 36.3 t ADT: 1,727

I-90 EBL

Fair

Over: Wind Creek

Moorcroft - Sundance, Crook, WY

Built 1962 Load: 36.3 t ADT: 2,133

I-90 WBL

Fair

Over: Wind Creek

Moorcroft - Sundance, Crook, WY

Built 1962 Load: 36.3 t ADT: 1,928

WYO 789

Fair

Over: Little Popo Agie River

Lander - Riverton, Fremont, WY

Built 1975 Load: 36.3 t ADT: 4,232

US 287

Fair

Over: M Fork Popo Agie River

Lander Streets, Fremont, WY

Built 1978 Load: 36.3 t ADT: 17,323

US 26

Fair

Over: Meadow Creek

Dubois-Diversion Dam Jct, Fremont, WY

Built 1986 Load: 36.3 t ADT: 1,554

US 26

Fair

Over: Willow Creek

Dubois-Diversion Dam Jct, Fremont, WY

Built 1986 Load: 36.3 t ADT: 1,554

US 85

Fair

Over: Rawhide Creek

Lingle - Lusk, Goshen, WY

Built 1980 Load: 36.3 t ADT: 897

WYO 157

Fair

Over: North Platte River

Lingle - Barnes, Goshen, WY

Built 1987 Load: 36.3 t ADT: 102

US 20

Fair

Over: Big Horn River

Shoshoni - Thermopolis, Hot Springs, WY

Built 1957 Load: 36.3 t ADT: 2,647

S 8th Street

Fair

Over: Big Horn River

S 8Th St - Thermopolis, Hot Springs, WY

Built 1991 Load: 36.3 t ADT: 266

WYO 387

Fair

Over: JJ Draw

Midwest - Reno Jct, Johnson, WY

Built 1978 Load: 36.3 t ADT: 1,784

US 16

Fair

Over: Watt Draw

Buffalo-Ucross, Johnson, WY

Built 1986 Load: 36.3 t ADT: 378

I-80 EBL

Fair

Over: UPRR

Laramie - Cheyenne, Laramie, WY

Built 1958 Load: 36.3 t ADT: 6,552

US 30

Fair

Over: UPRR / Twin Creek

Sage Jct - Kemmerer, Lincoln, WY

Built 1970 Load: 36.3 t ADT: 1,406

US 189

Fair

Over: Labarge Creek

Kemmerer-Big Piney, Lincoln, WY

Built 1985 Load: 36.3 t ADT: 733

US 30

Fair

Over: UPRR

Kemmerer-Sage Junction, Lincoln, WY

Built 1989 Load: 36.3 t ADT: 1,406

I-25 NBL

Fair

Over: Machinery Pass

Douglas - Casper, Natrona, WY

Built 1966 Load: 36.3 t ADT: 4,193

I-25 SBL

Fair

Over: Machinery Pass

Douglas - Casper, Natrona, WY

Built 1966 Load: 36.3 t ADT: 4,702

US 20

Fair

Over: C and NW Railroad

Casper, Natrona, WY

Built 1977 Load: 36.3 t ADT: 11,513

I-25 SBL

Fair

Over: Machinery Pass

Casper - Kaycee, Natrona, WY

Built 1980 Load: 36.3 t ADT: 1,464

Showing 1,751-1,800 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.