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 SBL

Fair

Over: Machinery Pass

Kaycee - Buffalo, Johnson, WY

Built 1967 Load: 27.4 t ADT: 1,472

I-80 EBL

Fair

Over: Machinery Pass

Laramie - Cheyenne, Laramie, WY

Built 1961 Load: 27.4 t ADT: 6,771

I-80 WBL

Fair

Over: Machinery Pass

Laramie - Cheyenne, Laramie, WY

Built 1961 Load: 27.4 t ADT: 6,876

I-80 EBL

Fair

Over: Machinery Pass

Rock Springs - Rawlins, Sweetwater, WY

Built 1963 Load: 27.4 t ADT: 6,528

I-80 WBL

Fair

Over: Machinery Pass

Rock Springs - Rawlins, Sweetwater, WY

Built 1963 Load: 27.4 t ADT: 6,551

I-80 EBL

Fair

Over: Machinery Pass

Rock Springs - Rawlins, Sweetwater, WY

Built 1962 Load: 27.4 t ADT: 6,618

NFSR 452

Fair

Over: JACK CREEK

NEAR JACK CREEK CG, Carbon, WY

Built 1976 Load: 27.5 t ADT: 50

I-80 Service Road

Fair

Over: Muddy Creek

Cheyenne - Pine Bluffs, Laramie, WY

Built 1974 Load: 27.8 t ADT: 295

Na Cnty Rd 110

Fair

Over: Cloud Creek

18 Miles N. Of Natrona, Natrona, WY

Built 1924 Load: 27.8 t ADT: 1,055

I-25 Service Road

Fair

Over: Chugwater Creek

Cheyenne - Chugwater, Platte, WY

Built 1955 Load: 27.8 t ADT: 86

Pl Cnty Rd 67

Fair

Over: Chugwater Creek

T25N R067W S23, Platte, WY

Built 1979 Load: 27.8 t ADT: 165

I-80 EBL

Fair

Over: Machinery Pass

Rock Springs - Rawlins, Sweetwater, WY

Built 1963 Load: 27.8 t ADT: 7,088

I-80 WBL

Fair

Over: Machinery Pass

Rock Springs - Rawlins, Sweetwater, WY

Built 1963 Load: 27.8 t ADT: 7,114

I-80 EBL

Fair

Over: Machinery Pass

Rock Springs - Rawlins, Sweetwater, WY

Built 1962 Load: 27.8 t ADT: 6,627

I-80 WBL

Fair

Over: Machinery Pass

Rock Springs - Rawlins, Sweetwater, WY

Built 1962 Load: 27.8 t ADT: 6,832

Co Cnty Rd 43

Fair

Over: BNSF Railway

14 Mi N.E. Of Douglas, Converse, WY

Built 1978 Load: 27.9 t ADT: 563

FDR 31

Fair

Over: N FORK CRAZY WOMAN CREEK

9.5 MI N OF HWY 16, Johnson, WY

Built 1977 Load: 27.9 t ADT: 25

FOREST ROAD 10211

Fair

Over: SWIFT CREEK

T32N, R118W, S15, Lincoln, WY

Built 1997 Load: 27.9 t ADT: 50

Reclamation Road

Fair

Over: Shoshone River

5.7 mi W-SW of Cody WY, Park, WY

Built 1986 Load: 27.9 t ADT: 100

US 191

Fair

Over: Hoback River

Daniel Jct - Hoback Jct, Sublette, WY

Built 1966 Load: 27.9 t ADT: 2,444

Ui Cnty Rd 233

Fair

Over: Blacks Fork River

11 Mi. N.E. Of Lyman, Uinta, WY

Built 1931 Load: 27.9 t ADT: 41

I-80 EBL

Fair

Over: Machinery Pass

Rawlins - Laramie, Carbon, WY

Built 1970 Load: 28.1 t ADT: 5,765

I-80 WBL

Fair

Over: Machinery Pass

Rawlins - Laramie, Carbon, WY

Built 1970 Load: 28.1 t ADT: 5,854

WYO 230

Fair

Over: Beaver Creek

Saratoga - Colo Line, Carbon, WY

Built 1981 Load: 28.1 t ADT: 642

I-25 NBL

Fair

Over: Machinery Pass

Douglas - Casper, Converse, WY

Built 1967 Load: 28.1 t ADT: 4,193

I-25 SBL

Fair

Over: Machinery Pass

Douglas - Casper, Converse, WY

Built 1967 Load: 28.1 t ADT: 4,702

I-25 SBL

Fair

Over: Machinery Pass

Douglas - Casper, Converse, WY

Built 1966 Load: 28.1 t ADT: 4,702

I-90 EBL

Fair

Over: Machinery Pass

Sundance Marginal, Crook, WY

Built 1972 Load: 28.1 t ADT: 2,744

I-90 WBL

Fair

Over: Machinery Pass

Sundance Marginal, Crook, WY

Built 1972 Load: 28.1 t ADT: 2,777

I-90 Service Road

Fair

Over: Sundance Creek

Sundance - S Dakota Line, Crook, WY

Built 1954 Load: 28.1 t ADT: 270

US 26

Fair

Over: Leclair Canal No 2

Diversion D Jt - Riverton, Fremont, WY

Built 1978 Load: 28.1 t ADT: 5,263

I-25 SBL

Fair

Over: Machinery Pass

Kaycee - Buffalo, Johnson, WY

Built 1968 Load: 28.1 t ADT: 1,770

I-90 EBL

Fair

Over: Machinery Pass

Buffalo - Gillette, Johnson, WY

Built 1961 Load: 28.1 t ADT: 2,110

I-90 WBL

Fair

Over: Machinery Pass

Buffalo - Gillette, Johnson, WY

Built 1961 Load: 28.1 t ADT: 2,033

US 20/26/87

Fair

Over: Claude Creek

East Yellowstone - Casper, Natrona, WY

Built 1957 Load: 28.1 t ADT: 2,833

NORTHEAST ENTRANCE

Fair

Over: LAMAR RIVER

5.3 MI. EAST OF TOWER JCT, Park, WY

Built 2012 Load: 28.1 t ADT: 2,000

I-25 SBL

Fair

Over: South Bear Creek

Wheatland - Glendo, Platte, WY

Built 1961 Load: 28.1 t ADT: 3,318

I-25 SBL

Fair

Over: Machinery Pass

Glendo - Douglas, Platte, WY

Built 1972 Load: 28.1 t ADT: 3,318

I-90 EBL

Fair

Over: Machinery Pass

Sheridan - Buffalo, Sheridan, WY

Built 1968 Load: 28.1 t ADT: 3,447

I-90 WBL

Fair

Over: Machinery Pass

Sheridan - Buffalo, Sheridan, WY

Built 1968 Load: 28.1 t ADT: 3,517

US 189

Fair

Over: Horse Creek

Kemmerer - Daniel Jct, Sublette, WY

Built 1969 Load: 28.1 t ADT: 1,380

US 191

Fair

Over: Hoback River

Daniel Jct - Hoback Jct, Sublette, WY

Built 1978 Load: 28.1 t ADT: 1,868

Culbertson Avenue

Fair

Over: Lower Hanover Canal

City Of Worland, Washakie, WY

Built 1950 Load: 28.1 t ADT: 638

I-25 NBL

Fair

Over: BNSF Railway

Douglas Marginal, Converse, WY

Built 1967 Load: 28.4 t ADT: 3,618

I-25 NBL

Fair

Over: Machinery Pass

Douglas - Casper, Converse, WY

Built 1966 Load: 28.4 t ADT: 4,193

I-25 NBL

Fair

Over: Machinery Pass

Buffalo Marginal, Johnson, WY

Built 1963 Load: 28.4 t ADT: 2,029

I-25 SBL

Fair

Over: Machinery Pass

Buffalo Marginal, Johnson, WY

Built 1963 Load: 28.4 t ADT: 1,717

FDR

Fair

Over: LODGEPOLE CREEK

CRANDALL RANGER STATION, Park, WY

Built 1991 Load: 28.5 t ADT: 50

FOREST ROAD 10046

Fair

Over: SOUTH COTTONWOOD CREEK

NO DATA ENTERED, Sublette, WY

Built 1984 Load: 28.5 t ADT: 20

US 310

Fair

Over: Shoshone River

Lovell - Deaver, Big Horn, WY

Built 1965 Load: 28.8 t ADT: 4,191

Showing 951-1,000 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.