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

US 20

Fair

Over: Big Horn River

Shoshoni - Thermopolis, Hot Springs, WY

Built 1957 Load: 36.3 t ADT: 2,647

US 26

Fair

Over: Whalen Draw

Guernsey - Lingle, Platte, WY

Built 1962 Load: 36.3 t ADT: 1,667

WYO 72

Fair

Over: I-80

Rawlins - Laramie, Carbon, WY

Built 1968 Load: 36.3 t ADT: 250

US 191

Fair

Over: UPRR

Jct I-80 - Utah Line, Sweetwater, WY

Built 1966 Load: 36.3 t ADT: 3,942

I-90 EBL

Fair

Over: Butler Speath Road

Gillette Marginal, Campbell, WY

Built 1971 Load: 36.3 t ADT: 3,744

WYO 95

Fair

Over: Machinery Pass

Glenrock - Jct WYO 93, Converse, WY

Built 1977 Load: 36.3 t ADT: 664

US 20

Fair

Over: C and NW Railroad

Casper, Natrona, WY

Built 1977 Load: 36.3 t ADT: 11,513

WYO 789

Fair

Over: Little Popo Agie River

Lander - Riverton, Fremont, WY

Built 1975 Load: 36.3 t ADT: 4,232

US 85

Fair

Over: Rawhide Creek

Lingle - Lusk, Goshen, WY

Built 1980 Load: 36.3 t ADT: 897

I-25 SBL

Fair

Over: Machinery Pass

Casper - Kaycee, Natrona, WY

Built 1980 Load: 36.3 t ADT: 1,464

I-25 NBL

Fair

Over: Machinery Pass

Casper - Kaycee, Natrona, WY

Built 1980 Load: 36.3 t ADT: 1,515

Wa Cnty Rd 47

Fair

Over: Nowood River

5 Mi. N.W. Of Tensleep, Washakie, WY

Built 1981 Load: 36.3 t ADT: 523

WYO 59

Fair

Over: BNSF Railway

Douglas - Reno Jct, Converse, WY

Built 1979 Load: 36.3 t ADT: 1,727

WYO 387

Fair

Over: JJ Draw

Midwest - Reno Jct, Johnson, WY

Built 1978 Load: 36.3 t ADT: 1,784

WYO 130

Fair

Over: Pass Creek

Walcott Jct - Saratoga, Carbon, WY

Built 1978 Load: 36.3 t ADT: 1,529

US 287

Fair

Over: M Fork Popo Agie River

Lander Streets, Fremont, WY

Built 1978 Load: 36.3 t ADT: 17,323

US 189

Fair

Over: Prairie Creek

Kemmerer - Daniel Jct, Sublette, WY

Built 1981 Load: 36.3 t ADT: 1,380

WYO 387

Fair

Over: Hay Creek

Midwest - Reno Jct, Campbell, WY

Built 1982 Load: 36.3 t ADT: 2,688

I-90 EBL

Fair

Over: Machinery Pass

Montana Line - Sheridan, Sheridan, WY

Built 1982 Load: 36.3 t ADT: 3,374

I-90 EBL

Fair

Over: Machinery Pass

Montana Line - Sheridan, Sheridan, WY

Built 1982 Load: 36.3 t ADT: 3,374

I-90 WBL

Fair

Over: Machinery Pass

Montana Line - Sheridan, Sheridan, WY

Built 1982 Load: 36.3 t ADT: 3,535

I-90 EBL

Fair

Over: Sh CR 79 (Coal Bank Rd)

Montana Line - Sheridan, Sheridan, WY

Built 1982 Load: 36.3 t ADT: 3,374

I-90 WBL

Fair

Over: Sh CR 79 (Coal Bank Rd)

Montana Line - Sheridan, Sheridan, WY

Built 1982 Load: 36.3 t ADT: 3,535

I-90 EBL

Fair

Over: Sh CR 65 (Barker Road)

Montana Line - Sheridan, Sheridan, WY

Built 1983 Load: 36.3 t ADT: 2,040

I-90 WBL

Fair

Over: Sh CR 65 (Barker Road)

Montana Line - Sheridan, Sheridan, WY

Built 1983 Load: 36.3 t ADT: 2,076

Sh Cnty Rd 28

Fair

Over: Little Goose Creek

0.25 Mi. E. Of Big Horn, Sheridan, WY

Built 1983 Load: 36.3 t ADT: 1,399

I-90 EBL

Fair

Over: Machinery Pass

Montana Line - Sheridan, Sheridan, WY

Built 1983 Load: 36.3 t ADT: 2,040

I-90 EBL

Fair

Over: Machinery Pass

Montana Line - Sheridan, Sheridan, WY

Built 1983 Load: 36.3 t ADT: 2,040

I-90 WBL

Fair

Over: Machinery Pass

Montana Line - Sheridan, Sheridan, WY

Built 1983 Load: 36.3 t ADT: 2,076

I-90 EBL

Fair

Over: Machinery Pass

Montana Line - Sheridan, Sheridan, WY

Built 1983 Load: 36.3 t ADT: 2,040

I-90 WBL

Fair

Over: Machinery Pass

Montana Line - Sheridan, Sheridan, WY

Built 1983 Load: 36.3 t ADT: 2,076

WYO 34

Fair

Over: Bluegrass Creek

Bosler Jct - Wheatland, Platte, WY

Built 1983 Load: 36.3 t ADT: 1,287

Ui Cnty Rd 261

Fair

Over: Chapman Creek

2.5 Mi. N.W. Of Robertson, Uinta, WY

Built 1984 Load: 36.3 t ADT: 72

WYO 157

Fair

Over: North Platte River

Lingle - Barnes, Goshen, WY

Built 1987 Load: 36.3 t ADT: 102

US 16

Fair

Over: Watt Draw

Buffalo-Ucross, Johnson, WY

Built 1986 Load: 36.3 t ADT: 378

US 189

Fair

Over: Labarge Creek

Kemmerer-Big Piney, Lincoln, WY

Built 1985 Load: 36.3 t ADT: 733

US 26

Fair

Over: Meadow Creek

Dubois-Diversion Dam Jct, Fremont, WY

Built 1986 Load: 36.3 t ADT: 1,554

US 26

Fair

Over: Willow Creek

Dubois-Diversion Dam Jct, Fremont, WY

Built 1986 Load: 36.3 t ADT: 1,554

Cl Cnty Rd 98

Fair

Over: Little Powder River

50 Mi N Of Gillette, Campbell, WY

Built 1987 Load: 36.3 t ADT: 17

WYO 120

Fair

Over: Cottonwood Creek

Cody-Montana State Line, Park, WY

Built 1989 Load: 36.3 t ADT: 1,324

US 30

Fair

Over: UPRR

Kemmerer-Sage Junction, Lincoln, WY

Built 1989 Load: 36.3 t ADT: 1,406

Te Cnty Rd 3

Fair

Over: Fish Creek

1.6 Miles North Of Wilson, Teton, WY

Built 1989 Load: 36.3 t ADT: 280

WYO 414

Fair

Over: Smiths Fork River

Mountain View Streets, Uinta, WY

Built 1990 Load: 36.3 t ADT: 1,520

S 8th Street

Fair

Over: Big Horn River

S 8Th St - Thermopolis, Hot Springs, WY

Built 1991 Load: 36.3 t ADT: 266

Al Cnty Rd 740

Fair

Over: Laramie River

2 Miles N. Of Bosler, Albany, WY

Built 1993 Load: 36.3 t ADT: 16

Bh Cnty Rd R5D

Fair

Over: Greybull River

Lanes 40 41, Big Horn, WY

Built 1994 Load: 36.3 t ADT: 74

US 191

Fair

Over: Wildlife Crossing

Pinedale-Daniel Jct Rd, Sublette, WY

Built 1992 Load: 36.3 t ADT: 2,948

Arrowhead Drive

Fair

Over: Cadwell Slough

Saratoga, Carbon, WY

Built 2001 Load: 36.3 t ADT: 59

I-80 EBL

Fair

Over: Rasmussen Road

Rock Springs - Rawlins, Sweetwater, WY

Built 2009 Load: 36.3 t ADT: 6,412

I-80 WBL

Fair

Over: Rasmussen Road

Rock Springs - Rawlins, Sweetwater, WY

Built 2010 Load: 36.3 t ADT: 6,389

Showing 1,501-1,550 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.