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

I-80 WBL

Unknown

Over: CR 154-1/Egbert South Rd

Cheyenne - Nebraska Line, Laramie, WY

Built 1965 ADT: 295

I-80 EBL

Unknown

Over: La CR 159-2 (Suchomel)

Cheyenne - Nebraska Line, Laramie, WY

Built 1965 ADT: 75

I-80 WBL

Unknown

Over: La CR 159-2 (Suchomel)

Cheyenne - Nebraska Line, Laramie, WY

Built 1965 ADT: 75

I-80 EBL

Unknown

Over: I-80 Service Road

Cheyenne - Nebraska Line, Laramie, WY

Built 1967 ADT: 295

I-80 WBL

Unknown

Over: I-80 Service Road

Cheyenne - Nebraska Line, Laramie, WY

Built 1967 ADT: 295

BNSF Railway

Unknown

Over: Missile Drive

Missile Drive Cheyenne, Laramie, WY

Built 1959 ADT: 4,490

I-80 WBL

Unknown

Over: Morrie Avenue

Cheyenne Marginal, Laramie, WY

Built 1973 ADT: 6,032

US 30

Unknown

Over: I-80

Cheyenne - Nebraska Line, Laramie, WY

Built 1976 ADT: 6,393

BNSF Railway

Unknown

Over: Old Happy Jack Road

Happy Jack Rd - Cheyenne, Laramie, WY

Built 1911 ADT: 1,275

BNSF Railway

Unknown

Over: US 30

Cheyenne, Laramie, WY

Built 1911 ADT: 8,481

WYO 211

Unknown

Over: I-25

Cheyenne Marginal, Laramie, WY

Built 1961 ADT: 6,429

I-80 EBL

Unknown

Over: Burlington Trail Road

Cheyenne Marginal, Laramie, WY

Built 1976 ADT: 410

I-80 WBL

Unknown

Over: Burlington Trail Road

Cheyenne Marginal, Laramie, WY

Built 1976 ADT: 410

I-80 EBL

Unknown

Over: Campstool Road

Cheyenne Marginal, Laramie, WY

Built 1977 ADT: 1,930

I-80 WBL

Unknown

Over: Campstool Road

Cheyenne Marginal, Laramie, WY

Built 1977 ADT: 6,755

WYO 212

Unknown

Over: I-80

Cheyenne Marginal, Laramie, WY

Built 1977 ADT: 10,598

WYO 212

Unknown

Over: UPRR / Campstool Rd

College Drive Cheyenne, Laramie, WY

Built 1977 ADT: 2,263

I-25 NBL

Unknown

Over: CR 123-2/Little Bear Rd

Cheyenne - Chugwater, Laramie, WY

Built 1977 ADT: 295

I-25 SBL

Unknown

Over: La CR 244-1 (Gillapsie)

Cheyenne - Chugwater, Laramie, WY

Built 1977 ADT: 295

I-180 NBL and SBL

Unknown

Over: Deming Drive

Cheyenne, Central Ave, Laramie, WY

Built 1980 ADT: 2,385

Union Pacific RR

Unknown

Over: Ames Avenue

T13N R066W S06, Laramie, WY

Built 1950 ADT: 7,502

Union Pacific RR

Unknown

Over: Ames Avenue

T13N R066W S06, Laramie, WY

Built 1950 ADT: 7,502

Central Avenue

Unknown

Over: I-25

Cheyenne Marginal, Laramie, WY

Built 1984 ADT: 8,596

WYO 215

Unknown

Over: UPRR / US 30

Pine Bluffs - Albin, Laramie, WY

Built 1986 ADT: 295

La Cnty Rd 926

Unknown

Over: I-25

Cheyenne Marginal, Laramie, WY

Built 1995 ADT: 10,460

I-25 NBL

Unknown

Over: Randall Avenue

Cheyenne Marginal, Laramie, WY

Built 2009 ADT: 3,344

I-25 SBL

Unknown

Over: Randall Avenue

Cheyenne Marginal, Laramie, WY

Built 2009 ADT: 3,344

La Cnty Rd 927

Unknown

Over: I-25

Colorado Line - Cheyenne, Laramie, WY

Built 2010 ADT: 9,466

Union Pacific RR

Unknown

Over: La CR 103-2 (Remount)

3 Mi W Of Harriman, Laramie, WY

Built 1930 ADT: 128

I-80 EBL

Unknown

Over: Muddy Creek

Cheyenne - Nebraska Line, Laramie, WY

Built 2017 ADT: 79

I-80 WBL

Unknown

Over: Muddy Creek

Cheyenne - Nebraska Line, Laramie, WY

Built 2015 ADT: 79

I-80 EBL

Unknown

Over: Parsons Street

Cheyenne - Nebraska Line, Laramie, WY

Built 2017 ADT: 2,255

I-80 WBL

Unknown

Over: Parsons Street

Cheyenne - Nebraska Line, Laramie, WY

Built 2015 ADT: 1,945

I-80 EBL

Unknown

Over: La CR 164-1 (Beech St)

Cheyenne - Nebraska Line, Laramie, WY

Built 2016 ADT: 295

I-80 WBL

Unknown

Over: La CR 164-1 (Beech St)

Cheyenne - Nebraska Line, Laramie, WY

Built 2015 ADT: 295

I-80 EBL

Unknown

Over: WYO 217 (Hillsdale Int)

Cheyenne - Nebraska Line, Laramie, WY

Built 2021 ADT: 355

I-80 WBL

Unknown

Over: WYO 217 (Hillsdale Int)

Cheyenne - Nebraska Line, Laramie, WY

Built 2020 ADT: 295

Parsley Blvd

Unknown

Over: I-80

Cheyenne Marginal, Laramie, WY

Built 2022 ADT: 10,016

US 189

Unknown

Over: US 30

Lazeart Jct - Kemmerer, Lincoln, WY

Built 1981 ADT: 1,531

Union Pacific RR

Unknown

Over: US 30 Service Road

Kemmerer - Sage Jct. Rd., Lincoln, WY

Built 1984 ADT: 151

Union Pacific RR

Unknown

Over: US 30

Opal, Lincoln, WY

Built 1986 ADT: 1,496

I-25 NBL

Unknown

Over: Na CR 600 (Blackmore)

Casper Marginal, Natrona, WY

Built 1968 ADT: 3,326

I-25 SBL

Unknown

Over: Na CR 600 (Blackmore)

Casper Marginal, Natrona, WY

Built 1968 ADT: 3,326

BNSF Railway

Unknown

Over: I-25

Casper, Natrona, WY

Built 1958 ADT: 12,268

N Beverly Street

Unknown

Over: I-25

Casper Marginal, Natrona, WY

Built 1960 ADT: 12,268

I-25 NBL

Unknown

Over: North McKinley Street

Casper Marginal, Natrona, WY

Built 1958 ADT: 1,829

I-25 NBL

Unknown

Over: Wardwell Road Intg

Casper Marginal, Natrona, WY

Built 1964 ADT: 2,344

I-25 SBL

Unknown

Over: Wardwell Road Intg

Casper Marginal, Natrona, WY

Built 1964 ADT: 4,717

I-25 NBL

Unknown

Over: Westwinds Road

Casper Marginal, Natrona, WY

Built 1964 ADT: 583

I-25 SBL

Unknown

Over: Westwinds Road

Casper Marginal, Natrona, WY

Built 1964 ADT: 583

Showing 301-350 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.