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

US 85

Good

Over: Beaver Creek

Mule Cr Jct-Newcastle, Weston, WY

Built 1993 Load: 32.7 t ADT: 1,079

We Cnty Rd 3

Good

Over: South Beaver Creek

16 Miles S. Of Newcastle, Weston, WY

Built 1997 Load: 32.7 t ADT: 22

WYO 116 S

Good

Over: West Fork Hay Creek

Upton South, Weston, WY

Built 2005 Load: 32.7 t ADT: 286

IRR BIA RTE 101

Good

Over: FIVE MILE CREEK

0.8 KM NE OF JCT 22 & 101, Fremont, WY

Built 1977 Load: 32.8 t ADT: 50

US 30

Good

Over: St Marys Creek

Walcott Jt - Medicine Bow, Carbon, WY

Built 1950 Load: 33.0 t ADT: 648

I-25 SBL

Good

Over: M Fork Crazy Woman Creek

Kaycee - Buffalo, Johnson, WY

Built 1968 Load: 33.0 t ADT: 1,472

4213: SMITHS FORK

Good

Over: Smiths Fork River

15 mi N of SR232 Jct, Lincoln, WY

Built 1963 Load: 33.0 t ADT: 30

NO DATA ENTERED

Good

Over: LABARGE CREEK

NO DATA ENTERED, Lincoln, WY

Built 2009 Load: 33.0 t ADT: 50

10123

Good

Over: BLIND BULL CREEK

T. 34 N. R 116 W. S.9, Lincoln, WY

Built 2003 Load: 33.0 t ADT: 75

Ln Cnty Rd 136

Good

Over: Salt River

4 Mi Nw Of Afton, Lincoln, WY

Built 2016 Load: 33.0 t ADT: 54

Pa Cnty Rd L14B

Good

Over: Shoshone River

8 Mi Sw Of Willwood, Park, WY

Built 2016 Load: 33.0 t ADT: 206

NO DATA ENTERED

Good

Over: GYPSUM CREEK

NO DATA ENTERED, Sublette, WY

Built 2009 Load: 33.0 t ADT: 50

NO DATA ENTERED

Good

Over: TEPEE CREEK

NO DATA ENTERED, Sublette, WY

Built 2009 Load: 33.0 t ADT: 50

I-80 Bus

Good

Over: Laramie River

Laramie, Curtis Street, Albany, WY

Built 1963 Load: 33.3 t ADT: 5,586

WYO 450

Good

Over: Skull Creek

Newcastle-Clareton Road, Weston, WY

Built 1989 Load: 33.3 t ADT: 763

Cl Cnty Rd 17-38N

Good

Over: BNSF Railway

6 mi north of Gillette, Campbell, WY

Built 2019 Load: 33.4 t ADT: 830

WYO 214

Good

Over: Unnamed Draw

Carpenter Road, Laramie, WY

Built 2009 Load: 33.4 t ADT: 1,185

WYO 214

Good

Over: Unnamed Draw

Carpenter Road, Laramie, WY

Built 2009 Load: 33.4 t ADT: 1,185

I-80 WBL

Good

Over: Machinery Pass

Rock Springs Marginal, Sweetwater, WY

Built 2007 Load: 33.4 t ADT: 8,539

Bh Cnty Rd R49

Good

Over: N Fork Paint Rock Creek

Hyattville, Big Horn, WY

Built 1983 Load: 33.6 t ADT: 144

Cl Cnty Rd 29

Good

Over: Wild Horse Creek

2 Miles S.E. Of Echeta, Campbell, WY

Built 1987 Load: 33.6 t ADT: 168

I-80 WBL

Good

Over: UPRR

Rawlins Marginal, Carbon, WY

Built 1963 Load: 33.6 t ADT: 6,522

US 287

Good

Over: Unnamed Draw

Rawlins - Muddy Gap Jct, Carbon, WY

Built 1971 Load: 33.6 t ADT: 2,952

IRR BIA RTE 140

Good

Over: CROW CREEK

0.8 KM NE OF JCT 23 & 140, Fremont, WY

Built 1977 Load: 33.6 t ADT: 5

US 287

Good

Over: Stockpass

Muddy Gap Jct-WYO 28 Jct, Fremont, WY

Built 1973 Load: 33.6 t ADT: 602

US 287

Good

Over: Stockpass

Muddy Gap Jct-WYO 28 Jct, Fremont, WY

Built 1973 Load: 33.6 t ADT: 602

US 287

Good

Over: Stockpass

Muddy Gap Jct-WYO 28 Jct, Fremont, WY

Built 1973 Load: 33.6 t ADT: 602

US 287

Good

Over: Beaver Creek

Muddy Gap Jct-WYO 28 Jct, Fremont, WY

Built 1959 Load: 33.6 t ADT: 915

I-25 NBL

Good

Over: Dugout Creek

Casper - Kaycee, Natrona, WY

Built 1979 Load: 33.6 t ADT: 1,499

I-25 SBL

Good

Over: Dugout Creek

Casper - Kaycee, Natrona, WY

Built 1979 Load: 33.6 t ADT: 1,439

Bryan Stock Trail

Good

Over: North Platte River

Casper, Natrona, WY

Built 1982 Load: 33.6 t ADT: 2,878

W 13th Street

Good

Over: Garden Creek

13Th St - Casper, Natrona, WY

Built 1992 Load: 33.6 t ADT: 6,940

US 20

Good

Over: S Fork Niobrara River

Lusk - Nebr. State Line, Niobrara, WY

Built 1986 Load: 33.6 t ADT: 525

WYO 335

Good

Over: Colorado Colony Ditch

Sheridan - South, Sheridan, WY

Built 1974 Load: 33.6 t ADT: 184

NO DATA ENTERED

Good

Over: NORTH COTTONWOOD CREEK

NO DATA ENTERED, Sublette, WY

Built 2009 Load: 33.6 t ADT: 50

Te Cnty Rd 1

Good

Over: Flat Creek

5 Mi Sw Of Jackson, Teton, WY

Built 2011 Load: 33.6 t ADT: 2,388

FDR 27

Good

Over: WEST TENSLEEP CREEK

6.3 MI NORTH OF HWY 16, Big Horn, WY

Built 1966 Load: 34.0 t ADT: 10

Cb Cnty Rd 660

Good

Over: Beaver Creek

7 Mi. NE of Riverside, Carbon, WY

Built 2021 Load: 34.0 t ADT: 68

4106: SQUAW ROAD

Good

Over: DRY SANDY CREEK

18 miles NE Farson, WY, Sublette, WY

Built 2017 Load: 34.0 t ADT: 25

Cr Cnty Rd 179

Good

Over: Arch Creek

18 Mi. S.E. Of Moorcroft, Crook, WY

Built 2019 Load: 34.3 t ADT: 28

IRR BIA RTE 33

Good

Over: COOLIDGE CANAL

3.2 KM SW OF ETHETE, Fremont, WY

Built 1994 Load: 34.3 t ADT: 10

ROAD

Good

Over: SALT RIVER

NO DATA ENTERED, Lincoln, WY

Built 1983 Load: 34.3 t ADT: 50

US 20

Good

Over: Casper Canal

Casper - Shoshoni, Natrona, WY

Built 1976 Load: 34.3 t ADT: 2,908

WYO 310

Good

Over: Wyo Development Co Canal

Wheatland West, Platte, WY

Built 2014 Load: 34.3 t ADT: 214

WYO 13

Good

Over: Big Harrison Ditch

Rock River - Jct I-80, Carbon, WY

Built 1976 Load: 34.5 t ADT: 192

Fr Cnty Rd 334

Good

Over: Coolidge Canal

3 Mi Se Of Ethete, Fremont, WY

Built 2012 Load: 34.5 t ADT: 1,152

ENTRANCE ROAD (FUT

Good

Over: LARAMIE RIVER

0.6 MILES WEST OF FORT LA, Goshen, WY

Built 1976 Load: 34.5 t ADT: 50

WYO 154

Good

Over: Cherry Creek

Yoder-Torrington, Goshen, WY

Built 1986 Load: 34.5 t ADT: 520

I-25 NBL

Good

Over: Machinery Pass

Casper - Kaycee, Natrona, WY

Built 1972 Load: 34.5 t ADT: 2,677

I-25 SBL

Good

Over: Machinery Pass

Casper - Kaycee, Natrona, WY

Built 1972 Load: 34.5 t ADT: 2,648

Showing 2,651-2,700 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.