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-25 NBL

Good

Over: Machinery Pass

Cheyenne - Chugwater, Laramie, WY

Built 1967 Load: 28.1 t ADT: 3,271

I-25 SBL

Good

Over: Machinery Pass

Cheyenne - Chugwater, Laramie, WY

Built 1967 Load: 28.1 t ADT: 3,277

I-25 SBL

Good

Over: Machinery Pass

Cheyenne - Chugwater, Laramie, WY

Built 1968 Load: 28.1 t ADT: 3,277

WYO 253

Good

Over: Dry Muddy Creek

Jct Us 20 2687 - South, Natrona, WY

Built 1955 Load: 28.1 t ADT: 460

Pa Cnty Rd R17

Good

Over: Alkali Creek

2.5 Mi. N.W. Of Ralston, Park, WY

Built 1974 Load: 28.1 t ADT: 128

I-90 EBL

Good

Over: Machinery Pass

Sheridan - Buffalo, Sheridan, WY

Built 1968 Load: 28.1 t ADT: 3,447

US 191

Good

Over: East Fork River

Farson - Pinedale, Sublette, WY

Built 1957 Load: 28.1 t ADT: 2,879

I-80 / US 30 Bus

Good

Over: Bitter Creek

Rock Springs, Bridger Ave, Sweetwater, WY

Built 1981 Load: 28.1 t ADT: 5,867

FDR 843

Good

Over: BEAVER CREEK

T 53 N R 63 W SEC 22, Crook, WY

Built 1940 Load: 28.2 t ADT: 100

FDR

Good

Over: N.FORK SHOSHONE

34 MILES WEST OF CODY, WY, Park, WY

Built 1940 Load: 28.2 t ADT: 25

Pa Cnty Rd 4DT

Good

Over: Wood River

11.5 Mi. SW of Meteetsee, Park, WY

Built 2021 Load: 28.2 t ADT: 175

FDR 373

Good

Over: MIDDLE FORK CLEAR CREEK

0.9 MI ON FDR 373, Johnson, WY

Built 1993 Load: 28.5 t ADT: 50

FOREST ROAD 10299

Good

Over: BIG SANDY CREEK

NO DATA ENTERED, Sublette, WY

Built 1974 Load: 28.5 t ADT: 100

NFSR 100

Good

Over: TURPIN CREEK

14.9 MI. NE OF SH 130, Carbon, WY

Built 1958 Load: 28.8 t ADT: 37

We Cnty Rd 54

Good

Over: Black Thunder Creek

32 Miles SW of Newcastle, Weston, WY

Built 2021 Load: 28.8 t ADT: 31

I-80 EBL

Good

Over: Machinery Pass

Rawlins - Laramie, Albany, WY

Built 1969 Load: 29.0 t ADT: 6,163

I-80 WBL

Good

Over: Machinery Pass

Rawlins - Laramie, Albany, WY

Built 1969 Load: 29.0 t ADT: 6,368

WYO 70

Good

Over: Little Snake River

Baggs - Riverside, Carbon, WY

Built 1956 Load: 29.0 t ADT: 835

WYO 130

Good

Over: North Brush Creek

Laramie - Jct WYO 230, Carbon, WY

Built 1934 Load: 29.0 t ADT: 723

US 20

Good

Over: BNSF Railway

Shoshoni - Thermopolis, Fremont, WY

Built 1970 Load: 29.0 t ADT: 2,615

I-25 NBL

Good

Over: S F Crazy Woman Creek

Kaycee - Buffalo, Johnson, WY

Built 1968 Load: 29.0 t ADT: 1,573

I-25 SBL

Good

Over: S F Crazy Woman Creek

Kaycee - Buffalo, Johnson, WY

Built 1968 Load: 29.0 t ADT: 1,472

I-25 NBL

Good

Over: Bull Creek

Kaycee - Buffalo, Johnson, WY

Built 1969 Load: 29.0 t ADT: 1,967

I-25 SBL

Good

Over: Bull Creek

Kaycee - Buffalo, Johnson, WY

Built 1969 Load: 29.0 t ADT: 1,770

I-25 NBL

Good

Over: Horse Creek

Cheyenne - Chugwater, Laramie, WY

Built 1968 Load: 29.0 t ADT: 3,271

WYO 120

Good

Over: Meeteetse Creek

Thermopolis - Cody, Park, WY

Built 1970 Load: 29.0 t ADT: 2,015

Pa Cnty Rd R4A

Good

Over: Bitter Creek

.20 Mi S. Of Garland, Park, WY

Built 1989 Load: 29.0 t ADT: 128

I-25 Service Road

Good

Over: Cottonwood Creek

El Rancho Intg North, Platte, WY

Built 1952 Load: 29.0 t ADT: 57

WYO 530

Good

Over: Henrys Fork River

Green River - Utah Line, Sweetwater, WY

Built 1963 Load: 29.0 t ADT: 988

NFSR 236

Good

Over: SOUTH FRENCH CREEK

10.5 MI. S. FROM SH 130, Carbon, WY

Built 1968 Load: 29.1 t ADT: 11

FR 10210

Good

Over: SWIFT CREEK

2 MI. E. OF AFTON, WY, Lincoln, WY

Built 2010 Load: 29.2 t ADT: 50

ROAD

Good

Over: N. LEIGH CREEK

NO DATA ENTERED, Teton, WY

Built 1983 Load: 29.2 t ADT: 50

Pa Cnty Rd R5B

Good

Over: Willwood Canal

6 Mi. S.E. Of Powell, Park, WY

Built 1999 Load: 29.4 t ADT: 128

I-90 WBL

Good

Over: Machinery Pass

Sheridan - Buffalo, Sheridan, WY

Built 1968 Load: 29.4 t ADT: 3,517

Wa Cnty Rd R13

Good

Over: Upper Hanover Canal

Apprx.4 Mi.S.Of Worland, Washakie, WY

Built 1988 Load: 29.4 t ADT: 362

NO DATA ENTERED

Good

Over: GREYS RIVER

NO DATA ENTERED, Lincoln, WY

Built 2010 Load: 29.5 t ADT: 50

Pa Cnty Rd L11C

Good

Over: Garland Canal

0.5 Miles N. Of Ralston, Park, WY

Built 1960 Load: 29.5 t ADT: 775

US 191

Good

Over: Hoback River

Daniel Jct - Hoback Jct, Sublette, WY

Built 1965 Load: 29.7 t ADT: 2,444

I-25 NBL

Good

Over: Laramie River

Wheatland - Glendo, Platte, WY

Built 1966 Load: 29.8 t ADT: 3,312

I-25 SBL

Good

Over: Laramie River

Wheatland - Glendo, Platte, WY

Built 1966 Load: 29.8 t ADT: 3,390

I-90 EBL

Good

Over: Machinery Pass

Gillette - Moorcroft, Campbell, WY

Built 1976 Load: 29.9 t ADT: 3,552

WYO 450

Good

Over: BNSF Railway

Newcastle - Jct WYO 59, Campbell, WY

Built 1979 Load: 29.9 t ADT: 1,476

I-90 WBL

Good

Over: Donkey Creek

Gillette - Moorcroft, Crook, WY

Built 1969 Load: 29.9 t ADT: 2,564

I-90 EBL

Good

Over: Machinery Pass

Sundance - S Dakota Line, Crook, WY

Built 1976 Load: 29.9 t ADT: 2,700

I-90 EBL

Good

Over: Machinery Pass

Sundance - S Dakota Line, Crook, WY

Built 1977 Load: 29.9 t ADT: 2,700

I-90 WBL

Good

Over: Machinery Pass

Sundance - S Dakota Line, Crook, WY

Built 1977 Load: 29.9 t ADT: 2,745

US 287

Good

Over: Popo Agie River

Lander - Diversion Dam Jt, Fremont, WY

Built 1961 Load: 29.9 t ADT: 4,044

US 26

Good

Over: Pilot Butte Res Of

Diversion D Jt - Riverton, Fremont, WY

Built 1978 Load: 29.9 t ADT: 1,324

I-25 NBL

Good

Over: Machinery Pass

Kaycee - Buffalo, Johnson, WY

Built 1971 Load: 29.9 t ADT: 1,967

I-25 SBL

Good

Over: Machinery Pass

Kaycee - Buffalo, Johnson, WY

Built 1971 Load: 29.9 t ADT: 1,770

Showing 2,301-2,350 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.