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-90 EBL

Fair

Over: Tom Cat Creek

Moorcroft - Sundance, Crook, WY

Built 1963 Load: 29.9 t ADT: 2,063

I-90 WBL

Fair

Over: Tom Cat Creek

Moorcroft - Sundance, Crook, WY

Built 1963 Load: 29.9 t ADT: 1,833

I-90 WBL

Fair

Over: Machinery Pass

Sundance - S Dakota Line, Crook, WY

Built 1976 Load: 29.9 t ADT: 2,745

I-90 EBL

Fair

Over: Machinery Pass

Sundance - S Dakota Line, Crook, WY

Built 1977 Load: 29.9 t ADT: 2,665

I-90 WBL

Fair

Over: Machinery Pass

Sundance - S Dakota Line, Crook, WY

Built 1977 Load: 29.9 t ADT: 2,674

US 85

Fair

Over: Bear Creek

Cheyenne - Torrington, Goshen, WY

Built 1969 Load: 29.9 t ADT: 2,775

I-90 EBL

Fair

Over: Piney Creek

Sheridan - Buffalo, Johnson, WY

Built 1966 Load: 29.9 t ADT: 3,577

I-90 WBL

Fair

Over: Piney Creek

Sheridan - Buffalo, Johnson, WY

Built 1966 Load: 29.9 t ADT: 3,758

WYO 220

Fair

Over: Eagle Creek

Muddy Gap Jct-WYO 487 Jct, Natrona, WY

Built 1967 Load: 29.9 t ADT: 3,066

WYO 487

Fair

Over: Sand Creek

Medicine Bow - Jt WYO 220, Natrona, WY

Built 1981 Load: 29.9 t ADT: 832

US 18

Fair

Over: Old Woman Creek

Lusk - Mule Creek Jct, Niobrara, WY

Built 1971 Load: 29.9 t ADT: 2,115

NORRIS - CANYON RO

Fair

Over: GIBBON RIVER

0.3 MI. EAST OF NORRIS JC, Park, WY

Built 1966 Load: 29.9 t ADT: 3,500

WYO 114

Fair

Over: Deaver Canal

Powell - Deaver, Park, WY

Built 1965 Load: 29.9 t ADT: 1,054

WYO 294

Fair

Over: Garland Canal

Jct Us 14A - North, Park, WY

Built 1957 Load: 29.9 t ADT: 792

I-25 NBL

Fair

Over: Machinery Pass

Wheatland - Glendo, Platte, WY

Built 1974 Load: 29.9 t ADT: 3,471

I-25 SBL

Fair

Over: Machinery Pass

Wheatland - Glendo, Platte, WY

Built 1974 Load: 29.9 t ADT: 3,318

I-25 NBL

Fair

Over: Horseshoe Creek

Wheatland - Glendo, Platte, WY

Built 1974 Load: 29.9 t ADT: 3,471

I-25 SBL

Fair

Over: Horseshoe Creek

Wheatland - Glendo, Platte, WY

Built 1974 Load: 29.9 t ADT: 3,318

WYO 336

Fair

Over: Wildcat Creek

Sheridan - East, Sheridan, WY

Built 1956 Load: 29.9 t ADT: 189

Sh Cnty Rd 53

Fair

Over: Big Goose Creek

Beckton, Sheridan, WY

Built 1987 Load: 29.9 t ADT: 163

WYO 376

Fair

Over: Bitter Creek

Rock Springs Circumferent, Sweetwater, WY

Built 1977 Load: 29.9 t ADT: 14,824

I-80 EBL

Fair

Over: UPRR / Bear River

Evanston Marginal, Uinta, WY

Built 1967 Load: 29.9 t ADT: 8,046

I-80 WBL

Fair

Over: UPRR / Bear River

Evanston Marginal, Uinta, WY

Built 1967 Load: 29.9 t ADT: 7,664

I-80 EBL

Fair

Over: Blacks Fork River

Evanston - Green River, Uinta, WY

Built 1968 Load: 29.9 t ADT: 6,673

US 16

Fair

Over: Lower Hanover Canal

Worland, Washakie, WY

Built 1951 Load: 29.9 t ADT: 8,517

Co Cnty Rd 11

Fair

Over: Canal

8 Mi. W. Of Douglas, Converse, WY

Built 1997 Load: 30.0 t ADT: 37

Co Cnty Rd 11

Fair

Over: Canal

8 Mi. W. Of Douglas, Converse, WY

Built 1998 Load: 30.0 t ADT: 37

I-25 SBL

Fair

Over: Machinery Pass

Colorado Line - Cheyenne, Laramie, WY

Built 1963 Load: 30.0 t ADT: 10,038

Pa Cnty Rd R7

Fair

Over: Bitter Creek

3 Miles N.E. Of Powell, Park, WY

Built 1966 Load: 30.0 t ADT: 47

N Seneca Avenue

Fair

Over: Cambria Creek

Newcastle Streets, Weston, WY

Built 1964 Load: 30.0 t ADT: 436

2411: WILD HORSE O

Fair

Over: MUDDY CREEK

7 mi N of Baggs, WY, Carbon, WY

Built 1993 Load: 30.1 t ADT: 50

I-25 SBL

Fair

Over: BNSF Railway

Douglas Marginal, Converse, WY

Built 1967 Load: 30.4 t ADT: 4,292

I-25 NBL

Fair

Over: Middle Fork Powder River

Kaycee Marginal, Johnson, WY

Built 1970 Load: 30.4 t ADT: 1,573

I-25 SBL

Fair

Over: Middle Fork Powder River

Kaycee Marginal, Johnson, WY

Built 1970 Load: 30.4 t ADT: 1,472

Na Cnty Rd 402

Fair

Over: Corral Creek

16 Miles S. Of Casper, Natrona, WY

Built 1970 Load: 30.4 t ADT: 23

Pa Cnty Rd YXD

Fair

Over: Little Boulder Creek

34 Mi. S.W. Of Cody, Park, WY

Built 1956 Load: 30.4 t ADT: 128

US 16

Fair

Over: BNSF Railway

Upton - Newcastle, Weston, WY

Built 1970 Load: 30.4 t ADT: 1,673

Co Cnty Rd 48

Fair

Over: BNSF Railway

12 Miles N.E. Of Douglas, Converse, WY

Built 1978 Load: 30.6 t ADT: 216

Ln Cnty Rd 318

Fair

Over: Green River

6 Mi South Of Labarge, Lincoln, WY

Built 1978 Load: 30.6 t ADT: 27

I-80 WBL

Fair

Over: Medicine Bow River

Rawlins - Laramie, Carbon, WY

Built 1968 Load: 30.7 t ADT: 5,833

I-25 NBL

Fair

Over: Lake Absarraca

Cheyenne Marginal, Laramie, WY

Built 1957 Load: 30.7 t ADT: 12,122

I-25 SBL

Fair

Over: Lake Absarraca

Cheyenne Marginal, Laramie, WY

Built 1957 Load: 30.7 t ADT: 8,596

I-25 NBL

Fair

Over: Lake Absarraca

Cheyenne Marginal, Laramie, WY

Built 1957 Load: 30.7 t ADT: 12,122

I-25 SBL

Fair

Over: Lake Absarraca

Cheyenne Marginal, Laramie, WY

Built 1957 Load: 30.7 t ADT: 8,596

I-80 EBL

Fair

Over: Unnamed Draw

Cheyenne - Nebraska Line, Laramie, WY

Built 1965 Load: 30.7 t ADT: 5,652

I-80 WBL

Fair

Over: Unnamed Draw

Cheyenne - Nebraska Line, Laramie, WY

Built 1965 Load: 30.7 t ADT: 4,732

I-80 Service Road

Fair

Over: Unnamed Draw

Cheyenne - Nebraska Line, Laramie, WY

Built 1966 Load: 30.7 t ADT: 1,243

I-80 WBL On Ramp

Fair

Over: Crow Creek

College Drive Intg, Laramie, WY

Built 1976 Load: 30.7 t ADT: 4,679

I-25 Service Road

Fair

Over: Dugout Creek

WYO 387 Jct - Buffalo, Natrona, WY

Built 1957 Load: 30.7 t ADT: 5

Pa Cnty Rd R5A

Fair

Over: Bitter Creek

1 Mile West Of Garland, Park, WY

Built 1968 Load: 30.7 t ADT: 12

Showing 1,051-1,100 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.