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 26

Fair

Over: Long Creek

Moran Jct-Dubois, Fremont, WY

Built 1989 Load: 43.5 t ADT: 2,037

US 26

Fair

Over: Haymaker Draw

2.6 Mile N. Of Riverton, Fremont, WY

Built 1988 Load: 43.5 t ADT: 5,796

US 85

Fair

Over: North Platte River

Torrington South Road, Goshen, WY

Built 1994 Load: 43.5 t ADT: 6,899

Ln Cnty Rd 148

Fair

Over: Fairview Canal

Smoot, Lincoln, WY

Built 1999 Load: 43.5 t ADT: 120

Na Cnty Rd 403

Fair

Over: Bolton Creek

20 Mi. S.W. Of Casper, Natrona, WY

Built 1994 Load: 43.5 t ADT: 2

Pa Cnty Rd 6KV

Fair

Over: N Fork Shoshone River

15 Miles West Of Cody, Park, WY

Built 1990 Load: 43.5 t ADT: 266

Pl Cnty Rd 272

Fair

Over: Laramie River

4 Mi North Of Wheatland, Platte, WY

Built 2007 Load: 43.5 t ADT: 131

Sb Cnty Rd 162

Fair

Over: New Fork River

11 Miles North Of Cora, Sublette, WY

Built 1989 Load: 43.5 t ADT: 86

U.S. ROUTE 89

Fair

Over: SNAKE RIVER

2 miles south of North En, Teton, WY

Built 1950 Load: 43.5 t ADT: 5,000

WYO 412

Fair

Over: Big Muddy Creek

.5 Mi South Of Carter, Uinta, WY

Built 2002 Load: 43.5 t ADT: 503

WYO 151

Fair

Over: Horse Creek

Lagrange, Goshen, WY

Built 1981 Load: 43.7 t ADT: 1,086

I-25 NBL

Fair

Over: Machinery Pass

Wheatland - Glendo, Platte, WY

Built 1966 Load: 43.7 t ADT: 3,312

IRR BIA RTE 20

Fair

Over: MILL CREEK

2.1KM S. 17 MI ROAD, Fremont, WY

Built 2010 Load: 43.9 t ADT: 427

I-25 NBL

Fair

Over: UPRR

Colorado Line - Cheyenne, Laramie, WY

Built 1964 Load: 44.4 t ADT: 9,466

I-25 SBL

Fair

Over: UPRR

Colorado Line - Cheyenne, Laramie, WY

Built 1964 Load: 44.4 t ADT: 10,038

OLD GLORY ROAD

Fair

Over: CROW CREEK

0.15 miles north of Missi, Laramie, WY

Built 1983 Load: 44.4 t ADT: 1,870

GRAND LOOP ROAD

Fair

Over: TOWER CREEK

18.2 MI. EAST OF MAMMOTH, Teton, WY

Built 1935 Load: 44.4 t ADT: 1,807

WYO 387

Fair

Over: Unnamed Draw

Midwest - Reno Jct, Campbell, WY

Built 1982 Load: 44.5 t ADT: 2,688

Cl Cnty Rd 99B

Fair

Over: BNSF Railway

20 Mi. S.E. Of Gillette, Campbell, WY

Built 1981 Load: 44.5 t ADT: 150

US 26

Fair

Over: Wind River

Riverton-Shoshoni, Fremont, WY

Built 2004 Load: 44.5 t ADT: 3,460

WYO 172

Fair

Over: Big Horn River

Lucerne - East, Hot Springs, WY

Built 1959 Load: 44.5 t ADT: 404

WYO 259

Fair

Over: Teapot Creek

I-25 - Midwest Road, Natrona, WY

Built 1999 Load: 44.5 t ADT: 3,910

WYO 259

Fair

Over: Salt Creek

Jct I-25 - Midwest, Natrona, WY

Built 2000 Load: 44.5 t ADT: 3,910

Ni Cnty Rd 18

Fair

Over: Sage Creek

14 Mi Ne Of Lusk, Niobrara, WY

Built 1997 Load: 44.5 t ADT: 31

WYO 34

Fair

Over: South Sybille Creek

Bosler Jct - Jct I-25, Platte, WY

Built 1982 Load: 44.5 t ADT: 1,287

WYO 351

Fair

Over: New Fork River

Big Piney Cutoff, Sublette, WY

Built 1994 Load: 44.5 t ADT: 899

WYO 374

Fair

Over: Blacks Fork River

8 mi E of Little America, Sweetwater, WY

Built 1946 Load: 44.5 t ADT: 1,111

US 30

Fair

Over: UPRR

Kemmerer-Granger Jct., Sweetwater, WY

Built 1998 Load: 44.5 t ADT: 1,496

Lewis Street

Fair

Over: Big Goose Creek

Sheridan, Sheridan, WY

Built 2015 Load: 44.7 t ADT: 3,401

Na Cnty Rd 305

Fair

Over: North Platte River

Robertson Rd., Natrona, WY

Built 2002 Load: 45.0 t ADT: 7,337

GRAND TETON NP RD

Fair

Over: SNAKE RIVER

JACKSON LAKE DAM, Teton, WY

Built 1911 Load: 45.0 t ADT: 1,800

US 189

Fair

Over: UPRR

Kemmerer-Daniel Jct, Lincoln, WY

Built 1983 Load: 45.1 t ADT: 1,277

WYO 51

Fair

Over: Belle Fourche River

Gillette-Moorecroft, Crook, WY

Built 1994 Load: 45.4 t ADT: 1,323

US 26

Fair

Over: Little Red Creek

Dubois-Diversion Dam, Fremont, WY

Built 1989 Load: 45.4 t ADT: 1,554

Na Cnty Rd 410

Fair

Over: Sweetwater River

43 Miles S.W. Of Casper, Natrona, WY

Built 1984 Load: 45.4 t ADT: 11

WYO 120

Fair

Over: Big Sand Coulee

Cody - Montana St. Line, Park, WY

Built 2002 Load: 45.4 t ADT: 2,016

Sh Cnty Rd 255

Fair

Over: Clear Creek

1 Mile N. Of Leiter, Sheridan, WY

Built 1993 Load: 45.4 t ADT: 65

US 189

Fair

Over: Faler Creek

Kemmerer - Daniel Jct, Sublette, WY

Built 1981 Load: 45.4 t ADT: 1,380

US 191

Fair

Over: Hoback River

Daniel Jct - Hoback Jct, Teton, WY

Built 1970 Load: 45.4 t ADT: 2,444

WYO 390

Fair

Over: Granite Creek

Wilson-Teton Village, Teton, WY

Built 2003 Load: 45.4 t ADT: 4,815

US 26

Fair

Over: Snake River

Hoback Jct - Jackson, Teton, WY

Built 2022 Load: 45.4 t ADT: 11,439

WYO 450

Fair

Over: Lodgepole Creek

Newcastle-Reno Jct, Weston, WY

Built 2004 Load: 45.4 t ADT: 618

Cr Cnty Rd 32

Fair

Over: Little Missouri River

19 Mi N.W. Of Hulett, Crook, WY

Built 1991 Load: 45.7 t ADT: 24

US 14A

Fair

Over: Garland Canal

Cody - Powell, Park, WY

Built 2005 Load: 45.9 t ADT: 5,827

FOREST ROAD 10156

Fair

Over: GREEN RIVER

30 MI NW. OF PINEDALE WY., Sublette, WY

Built 1977 Load: 46.0 t ADT: 150

US 14

Fair

Over: Newton Creek

34 Mi. West Of Cody, Park, WY

Built 2000 Load: 46.1 t ADT: 2,487

I-80 WBL

Fair

Over: UPRR

Laramie Marginal, Albany, WY

Built 2001 Load: 46.3 t ADT: 9,328

Bh Cnty Rd R1C

Fair

Over: Polecat Creek

0.5 Miles S. Of Deaver, Big Horn, WY

Built 1979 Load: 46.3 t ADT: 85

WYO 131

Fair

Over: M Fork Popo Agie River

Lander - South, Fremont, WY

Built 1958 Load: 46.3 t ADT: 1,226

WYO 156

Fair

Over: N Platte River Overflow

Torrington-Lingle Road, Goshen, WY

Built 1985 Load: 46.3 t ADT: 427

Showing 2,001-2,050 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.