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

Pl Cnty Rd 272

Fair

Over: Laramie River

4 Mi North Of Wheatland, Platte, WY

Built 2007 Load: 43.5 t ADT: 131

Ln Cnty Rd 148

Fair

Over: Fairview Canal

Smoot, Lincoln, WY

Built 1999 Load: 43.5 t ADT: 120

I-25 NBL

Fair

Over: Machinery Pass

Wheatland - Glendo, Platte, WY

Built 1966 Load: 43.7 t ADT: 3,312

WYO 151

Fair

Over: Horse Creek

Lagrange, Goshen, WY

Built 1981 Load: 43.7 t ADT: 1,086

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-80 WBL

Fair

Over: Snowy Range Road

Laramie Marginal, Albany, WY

Built 1997 Load: 44.1 t ADT: 9,014

GRAND LOOP ROAD

Fair

Over: TOWER CREEK

18.2 MI. EAST OF MAMMOTH, Teton, WY

Built 1935 Load: 44.4 t ADT: 1,807

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

WYO 374

Fair

Over: Blacks Fork River

8 mi E of Little America, Sweetwater, WY

Built 1946 Load: 44.5 t ADT: 1,111

WYO 172

Fair

Over: Big Horn River

Lucerne - East, Hot Springs, WY

Built 1959 Load: 44.5 t ADT: 404

WYO 34

Fair

Over: South Sybille Creek

Bosler Jct - Jct I-25, Platte, WY

Built 1982 Load: 44.5 t ADT: 1,287

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 30

Fair

Over: UPRR

Kemmerer-Granger Jct., Sweetwater, WY

Built 1998 Load: 44.5 t ADT: 1,496

WYO 351

Fair

Over: New Fork River

Big Piney Cutoff, Sublette, WY

Built 1994 Load: 44.5 t ADT: 899

Ni Cnty Rd 18

Fair

Over: Sage Creek

14 Mi Ne Of Lusk, Niobrara, WY

Built 1997 Load: 44.5 t ADT: 31

WYO 259

Fair

Over: Teapot Creek

I-25 - Midwest Road, Natrona, WY

Built 1999 Load: 44.5 t ADT: 3,910

US 26

Fair

Over: Wind River

Riverton-Shoshoni, Fremont, WY

Built 2004 Load: 44.5 t ADT: 3,460

WYO 259

Fair

Over: Salt Creek

Jct I-25 - Midwest, Natrona, WY

Built 2000 Load: 44.5 t ADT: 3,910

Lewis Street

Fair

Over: Big Goose Creek

Sheridan, Sheridan, WY

Built 2015 Load: 44.7 t ADT: 3,401

GRAND TETON NP RD

Fair

Over: SNAKE RIVER

JACKSON LAKE DAM, Teton, WY

Built 1911 Load: 45.0 t ADT: 1,800

Na Cnty Rd 305

Fair

Over: North Platte River

Robertson Rd., Natrona, WY

Built 2002 Load: 45.0 t ADT: 7,337

US 189

Fair

Over: UPRR

Kemmerer-Daniel Jct, Lincoln, WY

Built 1983 Load: 45.1 t ADT: 1,277

US 191

Fair

Over: Hoback River

Daniel Jct - Hoback Jct, Teton, WY

Built 1970 Load: 45.4 t ADT: 2,444

US 189

Fair

Over: Faler Creek

Kemmerer - Daniel Jct, Sublette, WY

Built 1981 Load: 45.4 t ADT: 1,380

Na Cnty Rd 410

Fair

Over: Sweetwater River

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

Built 1984 Load: 45.4 t ADT: 11

US 26

Fair

Over: Little Red Creek

Dubois-Diversion Dam, Fremont, WY

Built 1989 Load: 45.4 t ADT: 1,554

Sh Cnty Rd 255

Fair

Over: Clear Creek

1 Mile N. Of Leiter, Sheridan, WY

Built 1993 Load: 45.4 t ADT: 65

WYO 51

Fair

Over: Belle Fourche River

Gillette-Moorecroft, Crook, WY

Built 1994 Load: 45.4 t ADT: 1,323

WYO 450

Fair

Over: Lodgepole Creek

Newcastle-Reno Jct, Weston, WY

Built 2004 Load: 45.4 t ADT: 618

I-80 EBL

Fair

Over: US 287

Laramie Maginal, Albany, WY

Built 1999 Load: 45.4 t ADT: 9,282

WYO 120

Fair

Over: Big Sand Coulee

Cody - Montana St. Line, Park, WY

Built 2002 Load: 45.4 t ADT: 2,016

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

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

WYO 131

Fair

Over: M Fork Popo Agie River

Lander - South, Fremont, WY

Built 1958 Load: 46.3 t ADT: 1,226

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 156

Fair

Over: N Platte River Overflow

Torrington-Lingle Road, Goshen, WY

Built 1985 Load: 46.3 t ADT: 427

WYO 338

Fair

Over: Youngs Creek

Decker Road, Sheridan, WY

Built 1989 Load: 46.3 t ADT: 913

Go Cnty Rd 38C

Fair

Over: Fort Laramie Canal

Ne Of Hawk Springs, Goshen, WY

Built 1993 Load: 46.3 t ADT: 68

Go Cnty Rd 41A

Fair

Over: Cherry Creek Drainage

West Of Torrington, Goshen, WY

Built 1993 Load: 46.3 t ADT: 32

Go Cnty Rd 51C

Fair

Over: Cherry Creek Drainage

Apx 1 Mi E Of Torrington, Goshen, WY

Built 1993 Load: 46.3 t ADT: 276

Go Cnty Rd 68C

Fair

Over: Fort Laramie Canal

4 Miles W. Of Torrington, Goshen, WY

Built 1993 Load: 46.3 t ADT: 68

Sb Cnty Rd 118

Fair

Over: Big Sandy River

35 Miles Se Of Pinedale, Sublette, WY

Built 1995 Load: 46.3 t ADT: 151

WYO 270

Fair

Over: Cherry Creek

Lance Creek-South, Niobrara, WY

Built 1995 Load: 46.3 t ADT: 281

Showing 1,801-1,850 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.