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

Unknown

Over: WYO 191

Kaycee Marginal, Johnson, WY

Built 1970 ADT: 491

N Fork Road

Unknown

Over: I-25

Kaycee - Buffalo, Johnson, WY

Built 1971 ADT: 1,472

I-25 NBL

Unknown

Over: WYO 196

Kaycee - Buffalo, Johnson, WY

Built 1969 ADT: 309

I-25 SBL

Unknown

Over: WYO 196

Kaycee - Buffalo, Johnson, WY

Built 1969 ADT: 309

I-25 NBL

Unknown

Over: Jo CR 208 (Reno Road)

Kaycee - Buffalo, Johnson, WY

Built 1967 ADT: 97

I-25 SBL

Unknown

Over: Jo CR 208 (Reno Road)

Kaycee - Buffalo, Johnson, WY

Built 1967 ADT: 97

I-25 NBL

Unknown

Over: Jo CR 265 (Middle Fork)

Kaycee - Buffalo, Johnson, WY

Built 1968 ADT: 34

I-25 SBL

Unknown

Over: Jo CR 265 (Middle Fork)

Kaycee - Buffalo, Johnson, WY

Built 1968 ADT: 34

Jo Cnty Rd 13

Unknown

Over: I-25

Kaycee - Buffalo, Johnson, WY

Built 1968 ADT: 1,967

I-25 NBL

Unknown

Over: South Main Street

Buffalo Marginal, Johnson, WY

Built 1971 ADT: 1,659

I-25 SBL

Unknown

Over: South Main Street

Buffalo Marginal, Johnson, WY

Built 1971 ADT: 2,440

I-25 NBL

Unknown

Over: Jo CR 8 (Stockyard Road)

Buffalo Marginal, Johnson, WY

Built 1971 ADT: 89

I-25 SBL

Unknown

Over: Jo CR 8 (Stockyard Road)

Buffalo Marginal, Johnson, WY

Built 1971 ADT: 89

I-25 NBL

Unknown

Over: US 16 (East Hart Street)

Buffalo Marginal, Johnson, WY

Built 1963 ADT: 5,732

I-25 SBL

Unknown

Over: US 16 (East Hart Street)

Buffalo Marginal, Johnson, WY

Built 1963 ADT: 9,911

I-90 EBL

Unknown

Over: Lower Piney Creek Road

Sheridan - Buffalo, Johnson, WY

Built 1966 ADT: 599

I-90 WBL

Unknown

Over: Lower Piney Creek Road

Sheridan - Buffalo, Johnson, WY

Built 1966 ADT: 46

I-90 EBL

Unknown

Over: Jo CR 85 (Shell Creek)

Sheridan - Buffalo, Johnson, WY

Built 1966 ADT: 55

I-90 WBL

Unknown

Over: Jo CR 85 (Shell Creek)

Sheridan - Buffalo, Johnson, WY

Built 1966 ADT: 55

I-90 EBL

Unknown

Over: Jo CR 39 (Lake Ridge Rd)

Sheridan - Buffalo, Johnson, WY

Built 1966 ADT: 97

I-90 WBL

Unknown

Over: Jo CR 213 (Monument Rd)

Sheridan - Buffalo, Johnson, WY

Built 1966 ADT: 389

I-90 EBL

Unknown

Over: Jo CR 1 (Rock Creek Rd)

Sheridan - Buffalo, Johnson, WY

Built 1963 ADT: 165

I-90 EBL

Unknown

Over: North Main Street

Buffalo Marginal, Johnson, WY

Built 1963 ADT: 1,438

I-90 WBL

Unknown

Over: North Main Street

Buffalo Marginal, Johnson, WY

Built 1963 ADT: 249

I-90 EBL

Unknown

Over: US 16

Buffalo Marginal, Johnson, WY

Built 1959 ADT: 2,930

I-90 WBL

Unknown

Over: US 16

Buffalo Marginal, Johnson, WY

Built 1959 ADT: 1,004

I-90 EBL

Unknown

Over: Jo CR 204 (TW Road)

Buffalo - Gillette, Johnson, WY

Built 1959 ADT: 97

I-90 WBL

Unknown

Over: Jo CR 204 (TW Road)

Buffalo - Gillette, Johnson, WY

Built 1959 ADT: 97

I-90 EBL

Unknown

Over: Tipperary Road

Buffalo - Gillette, Johnson, WY

Built 1960 ADT: 97

I-90 WBL

Unknown

Over: Tipperary Road

Buffalo - Gillette, Johnson, WY

Built 1960 ADT: 97

I-90 EBL

Unknown

Over: Jo CR 117 (Cook Road)

Buffalo - Gillette, Johnson, WY

Built 1960 ADT: 89

I-90 WBL

Unknown

Over: Jo CR 117 (Cook Road)

Buffalo - Gillette, Johnson, WY

Built 1960 ADT: 89

I-90 EBL

Unknown

Over: Jo CR 204A (Dry Creek)

Buffalo - Gillette, Johnson, WY

Built 1960 ADT: 97

I-90 WBL

Unknown

Over: Jo CR 204A (Dry Creek)

Buffalo - Gillette, Johnson, WY

Built 1960 ADT: 97

I-90 EBL

Unknown

Over: Crazy Woman Creek Road

Buffalo - Gillette, Johnson, WY

Built 1961 ADT: 89

I-90 WBL

Unknown

Over: Crazy Woman Creek Road

Buffalo - Gillette, Johnson, WY

Built 1961 ADT: 89

I-90 EBL

Unknown

Over: Jo CR 204A (Dry Creek)

Buffalo - Gillette, Johnson, WY

Built 1961 ADT: 97

I-90 WBL

Unknown

Over: Jo CR 204A (Dry Creek)

Buffalo - Gillette, Johnson, WY

Built 1961 ADT: 97

I-90 EBL

Unknown

Over: Schoonover Road

Buffalo - Gillette, Johnson, WY

Built 1961 ADT: 97

I-90 WBL

Unknown

Over: Schoonover Road

Buffalo - Gillette, Johnson, WY

Built 1961 ADT: 97

I-90 EBL

Unknown

Over: Dry Creek Road

Buffalo - Gillette, Johnson, WY

Built 1961 ADT: 89

I-90 WBL

Unknown

Over: Dry Creek Road

Buffalo - Gillette, Johnson, WY

Built 1961 ADT: 89

I-90 EBL

Unknown

Over: Lower Powder River Road

Buffalo - Gillette, Johnson, WY

Built 1961 ADT: 97

I-90 WBL

Unknown

Over: Lower Powder River Road

Buffalo - Gillette, Johnson, WY

Built 1961 ADT: 97

I-90 EBL

Unknown

Over: Dead Horse Creek Road

Buffalo - Gillette, Johnson, WY

Built 1962 ADT: 97

I-90 WBL

Unknown

Over: Dead Horse Creek Road

Buffalo - Gillette, Johnson, WY

Built 1962 ADT: 97

I-90 WBL Off Ramp

Unknown

Over: I-25 - I-90 Ramp

Buffalo Marginal, Johnson, WY

Built 1964 ADT: 1,708

I-90 EBL

Unknown

Over: I-90 to I-25 Ramp

Buffalo Marginal, Johnson, WY

Built 1964 ADT: 130

I-90 WBL

Unknown

Over: Jo CR 1 (Rock Creek Rd)

Sheridan - Buffalo, Johnson, WY

Built 1963 ADT: 249

I-25 NBL

Unknown

Over: WYO 223 (Terry Ranch Rd)

Colorado Line - Cheyenne, Laramie, WY

Built 1964 ADT: 1,070

Showing 201-250 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.