State profile · Near median Poor share

Wyoming bridge safety

According to the Federal Highway Administration's 2024 National Bridge Inventory, condition ratings, load ratings, and Poor-condition shares for every public highway bridge in Wyoming.

3,136
Public bridges
30.1%
Good condition
6.5%
Poor condition

Wyoming holds 3,136 public highway bridges (#41 of 52 by inventory) with a 6.51% Poor share (#24 of 52 by Poor share).

That is 6.5% of the state's inventory, against an average of 7.5% across the 54 states and territories with Poor-rated bridges on file, which places it 29 of 54 ordered from the lowest Poor share upward. A bridge is rated Poor when its weakest applicable component scores 4 or below on the inspecting agency's 0-9 scale, so the category is a maintenance and funding signal rather than a closure order or a live crossing-safety verdict.

Inventory: FHWA NBI 2024 · last ETL August 2026

Total Bridges

3,136

Public highway bridges in Wyoming

Good Condition

30.1%

943 bridges rated 7-9

-19.9pp vs 50% benchmark

Poor Condition

6.5%

204 bridges whose lowest applicable component is rated 0-4

-1.0pp vs national avg 7.5%

Wyoming vs national bridge condition

Wyoming - Good condition share 30.1%
National avg

Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).

Wyoming - Poor-condition share 21.7%
National avg

Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.5%.

Wyoming in the national condition pattern

Each point is a state or territory in the FHWA NBI; the highlighted point is this profile.

Inventory size and Poor-condition share are different measures: Wyoming has 3,136 bridges and a 6.5% Poor-condition share in the 2024 NBI, rank #29 of 54 jurisdictions ordered from the lowest share upward. The dashed comparisons mark the national average state rate and the midpoint of the plotted inventory range; neither is a live safety or closure threshold. Scatter plot of 54 data points. 0%10%20%30%40% 0k20k40k60k Public bridges in inventory (thousands) Poor-condition share (%) WY, Public bridges in inventory (thousands): 3.1k · Poor-condition share (%): 6.51%AL, Public bridges in inventory (thousands): 16.2k · Poor-condition share (%): 3.35%AK, Public bridges in inventory (thousands): 1.7k · Poor-condition share (%): 7.89%AZ, Public bridges in inventory (thousands): 8.6k · Poor-condition share (%): 1.15%AR, Public bridges in inventory (thousands): 13k · Poor-condition share (%): 5.43%CA, Public bridges in inventory (thousands): 25.8k · Poor-condition share (%): 5.91%CO, Public bridges in inventory (thousands): 9k · Poor-condition share (%): 4.82%CT, Public bridges in inventory (thousands): 4.4k · Poor-condition share (%): 4.72%DE, Public bridges in inventory (thousands): 0.9k · Poor-condition share (%): 1.26%DC, Public bridges in inventory (thousands): 0.3k · Poor-condition share (%): 1.95%FL, Public bridges in inventory (thousands): 13k · Poor-condition share (%): 2.79%GA, Public bridges in inventory (thousands): 15.1k · Poor-condition share (%): 1.59%GU, Public bridges in inventory (thousands): 0k · Poor-condition share (%): 12.77%HI, Public bridges in inventory (thousands): 1.2k · Poor-condition share (%): 6.53%ID, Public bridges in inventory (thousands): 4.6k · Poor-condition share (%): 4.9%IL, Public bridges in inventory (thousands): 26.9k · Poor-condition share (%): 9.35%IN, Public bridges in inventory (thousands): 19.5k · Poor-condition share (%): 5.22%IA, Public bridges in inventory (thousands): 23.7k · Poor-condition share (%): 19.16%KS, Public bridges in inventory (thousands): 24.9k · Poor-condition share (%): 5.26%KY, Public bridges in inventory (thousands): 14.5k · Poor-condition share (%): 7.37%LA, Public bridges in inventory (thousands): 12.7k · Poor-condition share (%): 11.48%ME, Public bridges in inventory (thousands): 2.5k · Poor-condition share (%): 15.41%MD, Public bridges in inventory (thousands): 5.5k · Poor-condition share (%): 4.56%MA, Public bridges in inventory (thousands): 5.3k · Poor-condition share (%): 8.88%MI, Public bridges in inventory (thousands): 11.4k · Poor-condition share (%): 11.27%MN, Public bridges in inventory (thousands): 13.5k · Poor-condition share (%): 4.44%MS, Public bridges in inventory (thousands): 16.7k · Poor-condition share (%): 6.03%MO, Public bridges in inventory (thousands): 24.6k · Poor-condition share (%): 8.95%MT, Public bridges in inventory (thousands): 5.2k · Poor-condition share (%): 6.81%NE, Public bridges in inventory (thousands): 15.4k · Poor-condition share (%): 7.9%NV, Public bridges in inventory (thousands): 2.1k · Poor-condition share (%): 1.14%NH, Public bridges in inventory (thousands): 2.5k · Poor-condition share (%): 7.51%NJ, Public bridges in inventory (thousands): 6.8k · Poor-condition share (%): 6.01%NM, Public bridges in inventory (thousands): 4k · Poor-condition share (%): 4.51%NY, Public bridges in inventory (thousands): 17.6k · Poor-condition share (%): 9.43%NC, Public bridges in inventory (thousands): 19.2k · Poor-condition share (%): 6.76%ND, Public bridges in inventory (thousands): 4.3k · Poor-condition share (%): 10.98%OH, Public bridges in inventory (thousands): 26.7k · Poor-condition share (%): 4.74%OK, Public bridges in inventory (thousands): 22.9k · Poor-condition share (%): 7.7%OR, Public bridges in inventory (thousands): 8.3k · Poor-condition share (%): 4.61%PA, Public bridges in inventory (thousands): 23.3k · Poor-condition share (%): 12.58%PR, Public bridges in inventory (thousands): 2.4k · Poor-condition share (%): 13.92%RI, Public bridges in inventory (thousands): 0.8k · Poor-condition share (%): 15.2%SC, Public bridges in inventory (thousands): 9.5k · Poor-condition share (%): 6.17%SD, Public bridges in inventory (thousands): 5.9k · Poor-condition share (%): 16.36%TN, Public bridges in inventory (thousands): 20.4k · Poor-condition share (%): 4.41%TX, Public bridges in inventory (thousands): 56.7k · Poor-condition share (%): 1.23%UT, Public bridges in inventory (thousands): 3.1k · Poor-condition share (%): 2.91%VT, Public bridges in inventory (thousands): 2.9k · Poor-condition share (%): 2.9%VI, Public bridges in inventory (thousands): 0k · Poor-condition share (%): 29.17%VA, Public bridges in inventory (thousands): 14.1k · Poor-condition share (%): 3.39%WA, Public bridges in inventory (thousands): 8.5k · Poor-condition share (%): 5.45%WV, Public bridges in inventory (thousands): 7.3k · Poor-condition share (%): 18.64%WI, Public bridges in inventory (thousands): 14.4k · Poor-condition share (%): 6.52%
Inventory size and Poor-condition share are different measures: Wyoming has 3,136 bridges and a 6.5% Poor-condition share in the 2024 NBI, rank #29 of 54 jurisdictions ordered from the lowest share upward. The dashed comparisons mark the national average state rate and the midpoint of the plotted inventory range; neither is a live safety or closure threshold.

Wyoming vs all states by public bridge inventory

Where this state's FHWA NBI public-highway bridge count sits among every state and territory on PlainBridges

3,136 41st of 54 higher than 13 of 54 states

States and territories, banded by public bridge inventory size

Each bar is a band; taller bars hold more states. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source FHWA National Bridge Inventory · 2024

Read the rank neighborhood for Wyoming

The highlighted point is Wyoming: 3,136 bridges and 6.51% in Poor condition, rank #29 of 54 jurisdictions ordered from the lowest share upward. The five jurisdictions immediately above and below Wyoming on that same Poor-share ordering:

  • Mississippi: 16,739 bridges · 6.03% Poor
  • South Carolina: 9,490 bridges · 6.17% Poor
  • Wyoming: 3,136 bridges · 6.51% Poor
  • Wisconsin: 14,446 bridges · 6.52% Poor
  • Hawaii: 1,195 bridges · 6.53% Poor

The full national sortable table lives on the rankings page.

Material families in Wyoming

Exclusive FHWA material families across all 3,136 bridges in this state; continuous variants fold into the parent family. Orthogonal to the Poor-share scatter above.

Who maintains Wyoming’s inventory

State agency holds 62.9% of the 3,136 public highway bridges filed under Wyoming in the 2024 NBI, the agency-of-record split for this state, not a condition verdict.

When Wyoming’s bridges were built

Pre-1950 construction accounts for 5.2% of the 3,136 bridges with a recorded original year in Wyoming. Era bands are orthogonal to the Poor-share ranking above.

Condition Distribution

Wyoming30.1%63.4%GoodFairPoor
Bridge inventory deck-condition mix - Wyoming (FHWA NBI)

Counties (23)

Albany 124 Big Horn 91 Campbell 152 Carbon 206 Converse 137 Crook 176 Fremont 177 Goshen 106 Hot Springs 39 Johnson 204 Laramie 254 Lincoln 129 Natrona 135 Niobrara 34 Park 187 Platte 160 Sheridan 170 Sublette 109 Sweetwater 191 Teton 119 Uinta 132 Washakie 61 Weston 43

Wyoming vs nearby ranks

Adjacent states by Poor-condition share (lower share = better)

States are ranked by the share of bridges whose lowest applicable component rating is 4 or below. This describes recorded condition; it does not measure funding effectiveness or live crossing safety. States here sit immediately above and below Wyoming on the same metric.

MS

Mississippi

6.03% top marginal rate
Structure
Progressive
Burden @ $100K
$16,739

SC

South Carolina

6.17% top marginal rate
Structure
Progressive
Burden @ $100K
$9,490
Selected

WY

Wyoming

6.51% top marginal rate
Structure
Progressive
Burden @ $100K
$3,136

WI

Wisconsin

6.52% top marginal rate
Structure
Progressive
Burden @ $100K
$14,446

HI

Hawaii

6.53% top marginal rate
Structure
Progressive
Burden @ $100K
$1,195

Bridges Needing Most Attention in Wyoming

Six lowest-condition bridges in Wyoming, ranked by the portal's composite display score. Inspection intervals are risk-based under current NBIS rules.

We Cnty Rd 1A

Poor

Over: Beaver Creek

23 Miles Se Of Newcastle, Weston, WY

Built 1933 Load: 0.0 t ADT: 136

Wa Cnty Rd 580

Poor

Over: East Fork Sand Creek

8 Mi+East Of Worland, Washakie, WY

Built 1935 Load: 0.0 t ADT: 4

Fr Cnty Rd 523

Poor

Over: Twin Creek

15 Mi. S.E. Of Lander, Fremont, WY

Built 1932 Load: 0.0 t ADT: 8

FIREHOLE LAKE DRIV

Poor

Over: THERMAL AREA DRAINAGE

10 +/- MI. SOUTH OF MADIS, Teton, WY

Built 1935 Load: 3.6 t ADT: 1,500

Sb Cnty Rd 175

Poor

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

All Bridges in Wyoming

I-25 Service Road

Fair

Over: I-25

Glendo - Douglas, Converse, WY

Built 1971 Load: 23.6 t ADT: 145

Sw Cnty Rd 28

Fair

Over: Means Canal

10 Miles N. Of Farson, Sweetwater, WY

Built 1996 Load: 23.6 t ADT: 10

6902: PATHFINDER R

Fair

Over: NORTH PLATTE RIVER

10 miles SW of Alcova WY, Natrona, WY

Built 1995 Load: 23.7 t ADT: 70

I-90 EBL

Fair

Over: Machinery Pass

Moorcroft - Sundance, Crook, WY

Built 1961 Load: 23.8 t ADT: 2,063

I-90 EBL

Fair

Over: Machinery Pass

Sheridan Marginal, Sheridan, WY

Built 1961 Load: 23.9 t ADT: 3,462

I-90 WBL

Fair

Over: Machinery Pass

Sheridan Marginal, Sheridan, WY

Built 1961 Load: 23.9 t ADT: 3,642

I-90 EBL

Fair

Over: Machinery Pass

Buffalo - Gillette, Johnson, WY

Built 1961 Load: 23.9 t ADT: 2,110

I-90 WBL

Fair

Over: Machinery Pass

Buffalo - Gillette, Johnson, WY

Built 1961 Load: 23.9 t ADT: 2,033

I-90 EBL

Fair

Over: Machinery Pass

Buffalo - Gillette, Campbell, WY

Built 1959 Load: 23.9 t ADT: 2,057

I-90 WBL

Fair

Over: Machinery Pass

Buffalo - Gillette, Campbell, WY

Built 1959 Load: 23.9 t ADT: 2,114

I-90 EBL

Fair

Over: Machinery Pass

Buffalo - Gillette, Campbell, WY

Built 1959 Load: 23.9 t ADT: 2,057

I-90 WBL

Fair

Over: Machinery Pass

Buffalo - Gillette, Campbell, WY

Built 1959 Load: 23.9 t ADT: 2,114

US 20 Service Road

Fair

Over: Elkhorn Creek

East Yellowstone - Casper, Natrona, WY

Built 1957 Load: 23.9 t ADT: 180

US 30

Fair

Over: Smiths Fork River

Border Jct - Sage Jct, Lincoln, WY

Built 1935 Load: 23.9 t ADT: 1,815

US 16

Fair

Over: Alum Creek

Upton - Newcastle, Weston, WY

Built 1957 Load: 23.9 t ADT: 1,390

WYO 314

Fair

Over: Richeau Creek

Jct I-25 - East, Platte, WY

Built 1949 Load: 23.9 t ADT: 122

6214: BAR C ROAD

Fair

Over: MIDDLE FORK POWDER RIVER

4 miles S of Barnum WY, Johnson, WY

Built 1976 Load: 24.0 t ADT: 30

I-80 EBL

Fair

Over: 4 Mile Draw

Rock Springs - Rawlins, Carbon, WY

Built 1959 Load: 24.1 t ADT: 6,579

I-80 WBL

Fair

Over: 4 Mile Draw

Rock Springs - Rawlins, Carbon, WY

Built 1959 Load: 24.1 t ADT: 6,827

WYO 336

Fair

Over: Prairie Dog Creek

Sheridan - East, Sheridan, WY

Built 1956 Load: 24.1 t ADT: 572

WYO 336

Fair

Over: Dutch Creek

Sheridan - East, Sheridan, WY

Built 1956 Load: 24.1 t ADT: 189

WYO 353

Fair

Over: East Fork River

Boulder - Big Sandy, Sublette, WY

Built 1957 Load: 24.1 t ADT: 96

Co Cnty Rd 38

Fair

Over: Unnamed Draw

17 Miles N.E. Of Bill, Converse, WY

Built 1970 Load: 24.1 t ADT: 24

US 30 Service Road

Fair

Over: Twin Creek

Kemmer-Sage Jct.Rd., Lincoln, WY

Built 1959 Load: 24.1 t ADT: 151

I-90 Service Road

Fair

Over: Alkali Creek

Sundance - S Dakota Line, Crook, WY

Built 1956 Load: 24.2 t ADT: 270

1213: WHISTLE CREE

Fair

Over: WHISTLE CREEK

37 mi. NW of Greybull WY, Park, WY

Built 2011 Load: 24.3 t ADT: 30

FOREST ROAD 10125

Fair

Over: SHEEP CREEK

NO DATA ENTERED, Lincoln, WY

Built 1967 Load: 24.3 t ADT: 50

FOREST ROAD 10125

Fair

Over: SHEEP CREEK

NO DATA ENTERED, Lincoln, WY

Built 1967 Load: 24.3 t ADT: 50

FR 10002

Fair

Over: MURPHY CREEK

11 MI. SE. OF ALPINE, Lincoln, WY

Built 1981 Load: 24.3 t ADT: 50

I-80 WBL

Fair

Over: Sw CR 59 (Gaensslen Rd)

Evanston - Green River, Sweetwater, WY

Built 1966 Load: 24.3 t ADT: 8,494

US 191

Fair

Over: Hoback River

Daniel Jct - Hoback Jct, Sublette, WY

Built 1946 Load: 24.3 t ADT: 2,444

WYO 130

Fair

Over: North Platte River

Saratoga, Carbon, WY

Built 1949 Load: 24.3 t ADT: 2,065

IRR BIA RTE 46

Fair

Over: SUB AGENCY DITCH

14.5 KM SW OF RIVERTON, Fremont, WY

Built 1970 Load: 24.5 t ADT: 300

IRR BIA RTE 46

Fair

Over: SUB AGENCY DITCH

11.3 KM SW OF RIVERTON, Fremont, WY

Built 1970 Load: 24.5 t ADT: 300

IRR BIA RTE 101

Fair

Over: LOWER MUDDY CREEK

0.8 KM SW OF JCT 18 & 101, Fremont, WY

Built 1977 Load: 24.5 t ADT: 50

IRR BIA RTE 16

Fair

Over: COOLIDGE CANAL

11.3KM EAST OF WIND RIVER, Fremont, WY

Built 1979 Load: 24.5 t ADT: 300

ROAD 5

Fair

Over: GROS VENTRE RIVER

GROS VENTRE RVR AT KELLY, Teton, WY

Built 1975 Load: 24.5 t ADT: 40

TETON FOREST ACCES

Fair

Over: DITCH CREEK

1 mile north of Moose Jun, Teton, WY

Built 1960 Load: 24.5 t ADT: 300

U.S. ROUTE 89

Fair

Over: CREEK

4 miles south of Moran Ju, Teton, WY

Built 1957 Load: 24.5 t ADT: 3,500

NORTHEAST ENTRANCE

Fair

Over: SODA BUTTE CREEK

2.9 MI. WEST OF NE ENTRAN, Park, WY

Built 1934 Load: 24.5 t ADT: 1,982

NORTHEAST ENTRANCE

Fair

Over: SODA BUTTE CREEK

6.4 miles west of NE Entr, Park, WY

Built 1934 Load: 24.5 t ADT: 1,982

I-90 EBL

Fair

Over: Machinery Pass

Buffalo - Gillette, Johnson, WY

Built 1961 Load: 24.5 t ADT: 2,077

I-90 WBL

Fair

Over: Machinery Pass

Buffalo - Gillette, Johnson, WY

Built 1961 Load: 24.5 t ADT: 2,020

I-90 EBL

Fair

Over: Machinery Pass

Buffalo - Gillette, Campbell, WY

Built 1960 Load: 24.5 t ADT: 1,967

I-90 WBL

Fair

Over: Machinery Pass

Buffalo - Gillette, Campbell, WY

Built 1960 Load: 24.5 t ADT: 1,975

I-90 EBL

Fair

Over: Machinery Pass

Moorcroft - Sundance, Crook, WY

Built 1962 Load: 24.5 t ADT: 2,133

I-90 WBL

Fair

Over: Machinery Pass

Moorcroft - Sundance, Crook, WY

Built 1962 Load: 24.5 t ADT: 1,928

I-90 EBL

Fair

Over: Machinery Pass

Moorcroft - Sundance, Crook, WY

Built 1962 Load: 24.5 t ADT: 2,133

I-90 WBL

Fair

Over: Machinery Pass

Moorcroft - Sundance, Crook, WY

Built 1962 Load: 24.5 t ADT: 1,928

I-90 EBL

Fair

Over: Machinery Pass

Moorcroft - Sundance, Crook, WY

Built 1961 Load: 24.5 t ADT: 2,063

Showing 201-250 of 3,136 bridges

Related

All states → | National rankings → | Understanding conditions → | Retired SD term explained →
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges.

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). Poor condition is an inspection-record category, not a closure or unsafe-to-cross designation. Consult the bridge owner for current status.

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.

What to do with this

Use Wyoming's inventory picture to drill to a county or a specific span.

  • Browse counties in Wyoming and open the highest-Poor shares first. County list
  • See where this state sits among peers on Poor-condition share. State rankings
  • Compare this state with another jurisdiction on the same measures. State compare

NBI condition ratings are inventory snapshots, not live crossing-safety verdicts.

Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. Wyoming Good/Fair/Poor shares and county rollups on this page are computed from the same NBI extract as the national boards; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2024 NBI release. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.