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

WYO 294

Fair

Over: Garland Canal

Jct Us 14A - North, Park, WY

Built 1957 Load: 29.9 t ADT: 792

WYO 336

Fair

Over: Wildcat Creek

Sheridan - East, Sheridan, WY

Built 1956 Load: 29.9 t ADT: 189

I-90 WBL

Fair

Over: Butler Speath Road

Gillette Marginal, Campbell, WY

Built 1971 Load: 29.9 t ADT: 3,585

I-25 NBL

Fair

Over: Machinery Pass

Glendo - Douglas, Converse, WY

Built 1971 Load: 29.9 t ADT: 3,471

I-90 WBL

Fair

Over: Machinery Pass

Sundance - S Dakota Line, Crook, WY

Built 1976 Load: 29.9 t ADT: 2,745

US 18

Fair

Over: BNSF Railway

Orin Jct - Lusk, Converse, WY

Built 1977 Load: 29.9 t ADT: 2,072

WYO 376

Fair

Over: Bitter Creek

Rock Springs Circumferent, Sweetwater, WY

Built 1977 Load: 29.9 t ADT: 14,824

WYO 95

Fair

Over: Sand Creek

Glenrock - Jct WYO 93, Converse, WY

Built 1977 Load: 29.9 t ADT: 664

I-90 EBL

Fair

Over: Machinery Pass

Sundance - S Dakota Line, Crook, WY

Built 1977 Load: 29.9 t ADT: 2,665

I-90 WBL

Fair

Over: Machinery Pass

Sundance - S Dakota Line, Crook, WY

Built 1977 Load: 29.9 t ADT: 2,674

WYO 487

Fair

Over: Sand Creek

Medicine Bow - Jt WYO 220, Natrona, WY

Built 1981 Load: 29.9 t ADT: 832

US 14

Fair

Over: Horse Creek

Ucross - Jct WYO 59, Campbell, WY

Built 1983 Load: 29.9 t ADT: 1,318

Sh Cnty Rd 53

Fair

Over: Big Goose Creek

Beckton, Sheridan, WY

Built 1987 Load: 29.9 t ADT: 163

Co Cnty Rd 29

Fair

Over: Laprele Creek

10 Miles N.W. Of Douglas, Converse, WY

Built 1992 Load: 29.9 t ADT: 145

Al Cnty Rd 713

Fair

Over: North Laramie River

1 Mi S Of Garrett, Albany, WY

Built 2010 Load: 29.9 t ADT: 19

I-25 SBL

Fair

Over: Machinery Pass

Colorado Line - Cheyenne, Laramie, WY

Built 1963 Load: 30.0 t ADT: 10,038

I-25 SBL

Fair

Over: WYO 196

Kaycee - Buffalo, Johnson, WY

Built 1969 Load: 30.0 t ADT: 1,472

N Seneca Avenue

Fair

Over: Cambria Creek

Newcastle Streets, Weston, WY

Built 1964 Load: 30.0 t ADT: 436

Pa Cnty Rd R7

Fair

Over: Bitter Creek

3 Miles N.E. Of Powell, Park, WY

Built 1966 Load: 30.0 t ADT: 47

Co Cnty Rd 11

Fair

Over: Canal

8 Mi. W. Of Douglas, Converse, WY

Built 1997 Load: 30.0 t ADT: 37

Co Cnty Rd 11

Fair

Over: Canal

8 Mi. W. Of Douglas, Converse, WY

Built 1998 Load: 30.0 t ADT: 37

2411: WILD HORSE O

Fair

Over: MUDDY CREEK

7 mi N of Baggs WY, Carbon, WY

Built 1993 Load: 30.1 t ADT: 50

I-25 SBL

Fair

Over: BNSF Railway

Douglas Marginal, Converse, WY

Built 1967 Load: 30.4 t ADT: 4,292

I-25 NBL

Fair

Over: Middle Fork Powder River

Kaycee Marginal, Johnson, WY

Built 1970 Load: 30.4 t ADT: 1,573

I-25 SBL

Fair

Over: Middle Fork Powder River

Kaycee Marginal, Johnson, WY

Built 1970 Load: 30.4 t ADT: 1,472

I-80 EBL

Fair

Over: Walterscheid Blvd

Cheyenne Marginal, Laramie, WY

Built 1966 Load: 30.4 t ADT: 10,420

I-80 WBL

Fair

Over: Walterscheid Blvd

Cheyenne Marginal, Laramie, WY

Built 1966 Load: 30.4 t ADT: 10,016

I-80 EBL

Fair

Over: I-80 Service Road

Cheyenne - Nebraska Line, Laramie, WY

Built 1967 Load: 30.4 t ADT: 5,226

I-80 WBL

Fair

Over: I-80 Service Road

Cheyenne - Nebraska Line, Laramie, WY

Built 1967 Load: 30.4 t ADT: 4,387

US 16

Fair

Over: BNSF Railway

Upton - Newcastle, Weston, WY

Built 1970 Load: 30.4 t ADT: 1,673

I-25 SBL

Fair

Over: North Center Street

Casper Marginal, Natrona, WY

Built 1958 Load: 30.4 t ADT: 13,026

Na Cnty Rd 402

Fair

Over: Corral Creek

16 Miles S. Of Casper, Natrona, WY

Built 1970 Load: 30.4 t ADT: 23

Pa Cnty Rd YXD

Fair

Over: Little Boulder Creek

34 Mi. S.W. Of Cody, Park, WY

Built 1956 Load: 30.4 t ADT: 128

Co Cnty Rd 48

Fair

Over: BNSF Railway

12 Miles N.E. Of Douglas, Converse, WY

Built 1978 Load: 30.6 t ADT: 216

Ln Cnty Rd 318

Fair

Over: Green River

6 Mi South Of Labarge, Lincoln, WY

Built 1978 Load: 30.6 t ADT: 27

I-25 NBL

Fair

Over: Lake Absarraca

Cheyenne Marginal, Laramie, WY

Built 1957 Load: 30.7 t ADT: 12,122

I-25 SBL

Fair

Over: Lake Absarraca

Cheyenne Marginal, Laramie, WY

Built 1957 Load: 30.7 t ADT: 8,596

I-25 NBL

Fair

Over: Lake Absarraca

Cheyenne Marginal, Laramie, WY

Built 1957 Load: 30.7 t ADT: 12,122

I-25 SBL

Fair

Over: Lake Absarraca

Cheyenne Marginal, Laramie, WY

Built 1957 Load: 30.7 t ADT: 8,596

I-25 NBL

Fair

Over: North McKinley Street

Casper Marginal, Natrona, WY

Built 1958 Load: 30.7 t ADT: 11,987

I-25 Service Road

Fair

Over: Dugout Creek

WYO 387 Jct - Buffalo, Natrona, WY

Built 1957 Load: 30.7 t ADT: 5

I-80 WBL

Fair

Over: Medicine Bow River

Rawlins - Laramie, Carbon, WY

Built 1968 Load: 30.7 t ADT: 5,833

I-80 EBL

Fair

Over: Unnamed Draw

Cheyenne - Nebraska Line, Laramie, WY

Built 1965 Load: 30.7 t ADT: 5,652

I-80 WBL

Fair

Over: Unnamed Draw

Cheyenne - Nebraska Line, Laramie, WY

Built 1965 Load: 30.7 t ADT: 4,732

I-80 Service Road

Fair

Over: Unnamed Draw

Cheyenne - Nebraska Line, Laramie, WY

Built 1966 Load: 30.7 t ADT: 1,243

I-80 WBL On Ramp

Fair

Over: Crow Creek

College Drive Intg, Laramie, WY

Built 1976 Load: 30.7 t ADT: 4,679

I-25 SBL

Fair

Over: North McKinley Street

Casper Marginal, Natrona, WY

Built 1958 Load: 30.7 t ADT: 12,268

8th Street

Fair

Over: Canal No 2

Wheatland, Platte, WY

Built 1950 Load: 30.7 t ADT: 131

Pa Cnty Rd R5A

Fair

Over: Bitter Creek

1 Mile West Of Garland, Park, WY

Built 1968 Load: 30.7 t ADT: 12

I-25 NBL

Fair

Over: WYO 223 (Terry Ranch Rd)

Colorado Line - Cheyenne, Laramie, WY

Built 1964 Load: 30.8 t ADT: 9,466

Showing 601-650 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.