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 89

Poor

Over: Flat Creek

Hoback Jct - Jackson, Teton, WY

Built 1938 Load: 29.9 t ADT: 15,368

I-25 SBL

Poor

Over: Machinery Pass

Glendo - Douglas, Converse, WY

Built 1971 Load: 29.9 t ADT: 3,318

WYO 212

Poor

Over: Crow Creek

College Drive Cheyenne, Laramie, WY

Built 1976 Load: 29.9 t ADT: 13,541

Ui Cnty Rd 157

Poor

Over: Mill Creek

13 Mi. S. Of Evantson, Uinta, WY

Built 1981 Load: 29.9 t ADT: 264

Pa Cnty Rd 3XQ

Poor

Over: Greybull River

23 Miles Ne. Of Meeteetse, Park, WY

Built 1955 Load: 29.9 t ADT: 52

La Cnty Rd 124-2

Poor

Over: Lodgepole Creek

11 Mi Nw Of Cheyenne, Laramie, WY

Built 1935 Load: 30.0 t ADT: 474

I-80 EBL

Poor

Over: Sw CR 53 (White Mtn Rd)

Green River Marginal, Sweetwater, WY

Built 1966 Load: 30.6 t ADT: 7,619

US 191

Poor

Over: Hoback River

Daniel Jct - Hoback Jct, Sublette, WY

Built 1965 Load: 30.6 t ADT: 2,444

I-90 EBL and WBL

Poor

Over: BNSF / US 14/16

Gillette Marginal, Campbell, WY

Built 1972 Load: 30.7 t ADT: 3,794

I-25 SBL

Poor

Over: WYO 223 (Terry Ranch Rd)

Colorado Line - Cheyenne, Laramie, WY

Built 1964 Load: 30.8 t ADT: 10,038

I-25 SBL

Poor

Over: Lodgepole Creek

Cheyenne - Chugwater, Laramie, WY

Built 1970 Load: 30.8 t ADT: 3,277

I-25 SBL

Poor

Over: CR 237-1 (Bristol Ridge)

Cheyenne - Chugwater, Laramie, WY

Built 1968 Load: 30.8 t ADT: 3,277

I-90 EBL

Poor

Over: WYO 342

Sheridan - Buffalo, Sheridan, WY

Built 1968 Load: 30.8 t ADT: 3,427

Hereford Lane

Poor

Over: I-25

Casper Marginal, Natrona, WY

Built 1960 Load: 30.8 t ADT: 7,970

WYO 89

Poor

Over: Bear River

Evanston - Utah Line, Uinta, WY

Built 1978 Load: 30.8 t ADT: 1,935

Sw Cnty Rd 51

Poor

Over: Sweetwater Creek

County Road 51, Sweetwater, WY

Built 1975 Load: 30.8 t ADT: 2,234

I-25 NBL

Poor

Over: Boxelder Creek

Douglas - Casper, Converse, WY

Built 1958 Load: 31.0 t ADT: 4,684

Washakie Avenue

Poor

Over: Lower Hanover Canal

Washakie Ave. Worland, Washakie, WY

Built 1970 Load: 31.0 t ADT: 1,490

Jo Cnty Rd 85

Poor

Over: Rock Creek

11 Mi. N.W. Of Buffalo, Johnson, WY

Built 1976 Load: 31.0 t ADT: 55

Bh Cnty Rd 268

Poor

Over: Medicine Lodge Creek

T50N R089W S31, Big Horn, WY

Built 1970 Load: 31.0 t ADT: 188

I-80 EBL

Poor

Over: CR 123-1 (Southwest Dr)

Cheyenne Marginal, Laramie, WY

Built 1965 Load: 31.4 t ADT: 10,420

Water Street

Poor

Over: Canal No 2

9Th And Water Street, Platte, WY

Built 1950 Load: 31.4 t ADT: 131

Fr Cnty Rd 476

Poor

Over: Pilot Canal

10 Mi N.W. Of Riverton, Fremont, WY

Built 1970 Load: 31.5 t ADT: 127

Pl Cnty Rd 47

Poor

Over: North Laramie River

5 Mi. N. Of Wheatland, Platte, WY

Built 1990 Load: 31.5 t ADT: 10

Wa Cnty Rd R34

Poor

Over: Spillway Hanover Canal

10 Miles N.E. Of Worland, Washakie, WY

Built 1929 Load: 31.5 t ADT: 117

I-25 SBL

Poor

Over: North Laramie River

Wheatland - Glendo, Platte, WY

Built 1966 Load: 31.8 t ADT: 3,390

I-25 SBL

Poor

Over: South Fork Bear Creek

Cheyenne - Chugwater, Laramie, WY

Built 1977 Load: 31.8 t ADT: 3,277

WYO 89

Poor

Over: Bear River Overflow

Evanston - Utah Line, Uinta, WY

Built 1978 Load: 31.8 t ADT: 1,935

I-90 WBL

Poor

Over: Machinery Pass

Gillette - Moorcroft, Campbell, WY

Built 1976 Load: 32.3 t ADT: 3,644

Jo Cnty Rd 1

Poor

Over: Rock Creek

4 Mi N.E. Of Buffalo, Johnson, WY

Built 1994 Load: 32.4 t ADT: 165

WYO 220

Poor

Over: Sweetwater River

Muddy Gap Jct-WYO 487 Jct, Natrona, WY

Built 1970 Load: 32.7 t ADT: 1,771

US 16

Poor

Over: E Branch Wind Creek

Moorcroft - Upton, Weston, WY

Built 1966 Load: 32.7 t ADT: 1,326

WYO 414

Poor

Over: Unnamed Draw

Jct I-80 - Utah Line, Uinta, WY

Built 1961 Load: 32.7 t ADT: 593

WYO 374

Poor

Over: Grease Wood Draw

Jct I-80 - Green River, Sweetwater, WY

Built 1942 Load: 32.7 t ADT: 2,369

Go Cnty Rd 136

Poor

Over: Unnamed Draw

5.5 Mi. N. Of Jay-Em, Goshen, WY

Built 1983 Load: 32.7 t ADT: 68

Sw Cnty Rd 51

Poor

Over: Little Bitter Creek

6.5 Mi.Sw Of Rock Springs, Sweetwater, WY

Built 1975 Load: 32.7 t ADT: 2,234

Go Cnty Rd 43E

Poor

Over: Springer Main Lateral

2.5 Miles N.E. Of Yoder, Goshen, WY

Built 1973 Load: 32.7 t ADT: 7

Go Cnty Rd 29C

Poor

Over: Fort Laramie Canal

3 Mi. N. Of Veteran, Goshen, WY

Built 1973 Load: 32.7 t ADT: 168

WYO 59

Poor

Over: Mikes Draw

Douglas-Bill, Converse, WY

Built 1980 Load: 32.7 t ADT: 2,840

WYO 120

Poor

Over: Buffalo Creek

Thermop-Meeteetse, Hot Springs, WY

Built 1992 Load: 32.7 t ADT: 1,423

Broadway Street

Poor

Over: Big Horn River

Thermopolis, Hot Springs, WY

Built 1968 Load: 33.3 t ADT: 1,685

Co Cnty Rd 22

Poor

Over: North Platte River

5 Miles West Of Glenrock, Converse, WY

Built 1992 Load: 33.3 t ADT: 85

I-25 NBL

Poor

Over: US 85

Cheyenne - Chugwater, Laramie, WY

Built 1957 Load: 33.6 t ADT: 5,943

S 6th Street

Poor

Over: UPRR

6Th Street Rawlins, Carbon, WY

Built 1966 Load: 33.6 t ADT: 1,984

US 14A

Poor

Over: Sand Draw

Lovell - Burgess Jct, Big Horn, WY

Built 1975 Load: 33.6 t ADT: 1,557

WYO 450

Poor

Over: BNSF Railway

Newcastle - Jct WYO 59, Campbell, WY

Built 1980 Load: 33.6 t ADT: 1,476

I-180 NBL

Poor

Over: UPRR

Cheyenne Central Ave, Laramie, WY

Built 1982 Load: 33.6 t ADT: 9,268

Cb Cnty Rd 1

Poor

Over: Medicine Bow River

4 Mi. S. Of Medicine Bow, Carbon, WY

Built 1982 Load: 33.6 t ADT: 82

Sb Cnty Rd 141

Poor

Over: Piney Creek

T30N R112W S36, Sublette, WY

Built 1986 Load: 33.6 t ADT: 129

WYO 376

Poor

Over: WYO 430

Rock Springs Circumferent, Sweetwater, WY

Built 1980 Load: 33.9 t ADT: 1,545

Showing 3,051-3,100 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.