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

GF1 (Ltl Horn Acc)

Fair

Over: Little Big Horn River

T58N R089W S17, Sheridan, WY

Built 1945 Load: 20.2 t ADT: 111

I-80 EBL and WBL

Fair

Over: Unnamed Draw

Laramie - Cheyenne, Albany, WY

Built 1946 Load: 20.2 t ADT: 6,860

FDR

Fair

Over: BURROUGHS CREEK

NO DATA ENTERED, Fremont, WY

Built 1956 Load: 20.4 t ADT: 50

US 189

Fair

Over: South Piney Creek

Kemmerer - Daniel Jct, Sublette, WY

Built 1960 Load: 20.6 t ADT: 2,134

US 16

Fair

Over: Oil Creek

Upton - Newcastle, Weston, WY

Built 1954 Load: 20.6 t ADT: 1,390

WYO 31

Fair

Over: Alkali Creek

Manderson - Hyattville, Big Horn, WY

Built 1948 Load: 20.6 t ADT: 216

Access Road

Fair

Over: Boysen Dam Spillway

15.9 mi S. of Thermopolis, Fremont, WY

Built 1948 Load: 20.7 t ADT: 5

FDR 33

Fair

Over: CRAZY WOMAN CREEK

4.1 MI EAST OF HWY 16, Johnson, WY

Built 1954 Load: 20.7 t ADT: 5

Al Cnty Rd 44A

Fair

Over: Pioneer Canal

2 Miles N. Of Harmony, Albany, WY

Built 1958 Load: 20.7 t ADT: 143

TETON PARK ROAD

Fair

Over: COTTONWOOD CREEK

3 miles north of Moose W, Teton, WY

Built 1963 Load: 20.9 t ADT: 2,941

WYO 51

Fair

Over: Well Creek

Gillette - Moorcroft, Crook, WY

Built 1956 Load: 20.9 t ADT: 1,323

WYO 51

Fair

Over: Donkey Creek

Gillette - Moorcroft, Crook, WY

Built 1956 Load: 20.9 t ADT: 1,323

WYO 31

Fair

Over: Nowood River

Manderson - Hyattville, Big Horn, WY

Built 1952 Load: 20.9 t ADT: 486

WYO 32

Fair

Over: Foster Gulch

Lovell - Emblem, Big Horn, WY

Built 1954 Load: 20.9 t ADT: 346

WYO 320

Fair

Over: Wheatland Creek

Wheatland - Jct Us 26, Platte, WY

Built 1956 Load: 20.9 t ADT: 874

Co Cnty Rd 17

Fair

Over: Hunton Creek

10 Mi S.E. Of Glenrock, Converse, WY

Built 1955 Load: 20.9 t ADT: 181

Cr Cnty Rd 268

Fair

Over: Inyan Kara Creek

15 Mi. S.W. Of Sundance, Crook, WY

Built 1960 Load: 20.9 t ADT: 74

Co Cnty Rd 46

Fair

Over: Hage Draw

T33N R067W S18, Converse, WY

Built 1983 Load: 20.9 t ADT: 56

Bh Cnty Rd L42C

Fair

Over: Big Horn River

Basin, Big Horn, WY

Built 1958 Load: 20.9 t ADT: 207

Fr Cnty Rd 442

Fair

Over: Hornecker Creek

5 Mi Sw Of Lander, Fremont, WY

Built 1950 Load: 20.9 t ADT: 77

I-80 WBL

Fair

Over: Machinery Pass

Rawlins - Laramie, Carbon, WY

Built 1969 Load: 21.2 t ADT: 5,905

WYO 192

Fair

Over: Carpenter Creek

Kaycee - Jct WYO 387, Johnson, WY

Built 1956 Load: 21.2 t ADT: 116

WYO 32

Fair

Over: Sand Creek

Lovell - Emblem, Big Horn, WY

Built 1954 Load: 21.2 t ADT: 346

WYO 434

Fair

Over: Otter Creek

Tensleep - Big Trails, Washakie, WY

Built 1956 Load: 21.2 t ADT: 94

2302: HUDSON-ATLAN

Fair

Over: STRAWBERRY CREEK

12 Mi E S. Pass City WY, Fremont, WY

Built 2005 Load: 21.4 t ADT: 40

FOREST ROAD 10043

Fair

Over: GREYS RIVER

NO DATA ENTERED, Lincoln, WY

Built 1967 Load: 21.4 t ADT: 50

I-25 NBL

Fair

Over: Wardwell Road Intg

Casper Marginal, Natrona, WY

Built 1964 Load: 21.6 t ADT: 3,476

I-25 SBL

Fair

Over: Wardwell Road Intg

Casper Marginal, Natrona, WY

Built 1964 Load: 21.6 t ADT: 3,547

I-25 Service Road

Fair

Over: South Fork Powder River

WYO 387 Jct - Buffalo, Johnson, WY

Built 1932 Load: 21.6 t ADT: 79

I-25 NBL

Fair

Over: Jo CR 208 (Reno Road)

Kaycee - Buffalo, Johnson, WY

Built 1967 Load: 21.6 t ADT: 1,573

Wa Cnty Rd 580A

Fair

Over: Nowood River

1 Mi S.W. Of Tensleep, Washakie, WY

Built 1935 Load: 21.6 t ADT: 16

IRR BIA RTE 31

Fair

Over: MEADOW CREEK

1.5 KM SE OF CROWHEART, Fremont, WY

Built 1970 Load: 21.7 t ADT: 50

NFSR 206

Fair

Over: SOUTH FRENCH CREEK

9.3 MI. S. OF SH 130, Carbon, WY

Built 1960 Load: 21.7 t ADT: 26

FOREST ROAD 30100

Fair

Over: SOUTH FK. SPREAD CKEEK

12 MI. SE. OF MORAN WY, Teton, WY

Built 1971 Load: 21.7 t ADT: 100

NO DATA ENTERED

Fair

Over: BLACKROCK CREEK

NO DATA ENTERED, Teton, WY

Built 1969 Load: 21.7 t ADT: 50

GRAND LOOP ROAD

Fair

Over: GARDNER RIVER

1.6 MI. SOUTHEAST OF MAMM, Park, WY

Built 1939 Load: 21.8 t ADT: 4,350

WYO 432

Fair

Over: Upper Hanover Canal

Worland - Nieber, Washakie, WY

Built 1958 Load: 21.8 t ADT: 233

Cl Cnty Rd 18

Fair

Over: N Fork Dead Horse Creek

21 Mi. S.W. Of Gilletee, Campbell, WY

Built 1965 Load: 21.8 t ADT: 75

I-80 EBL

Fair

Over: Machinery Pass

Rawlins - Laramie, Carbon, WY

Built 1969 Load: 21.9 t ADT: 5,820

I-90 EBL

Fair

Over: Machinery Pass

Buffalo - Gillette, Johnson, WY

Built 1960 Load: 21.9 t ADT: 2,080

I-90 WBL

Fair

Over: Machinery Pass

Buffalo - Gillette, Johnson, WY

Built 1960 Load: 21.9 t ADT: 2,000

WYO 159

Fair

Over: Interstate Canal

Torrington - North, Goshen, WY

Built 1953 Load: 21.9 t ADT: 96

La Cnty Rd 143-2

Fair

Over: Lodgepole Creek

2 Miles N. Of Hillsdale, Laramie, WY

Built 1958 Load: 21.9 t ADT: 278

FSR

Fair

Over: BLACKWATER CREEK

34 MILES W OF CODY WY, Park, WY

Built 1971 Load: 22.0 t ADT: 50

I-80 EBL

Fair

Over: Machinery Pass

Rock Springs - Rawlins, Sweetwater, WY

Built 1960 Load: 22.2 t ADT: 6,463

I-80 WBL

Fair

Over: Machinery Pass

Rock Springs - Rawlins, Sweetwater, WY

Built 1960 Load: 22.2 t ADT: 6,419

I-90 Service Road

Fair

Over: Sundance Creek

Sundance - S Dakota Line, Crook, WY

Built 1954 Load: 22.2 t ADT: 440

US 85

Fair

Over: Cherry Creek

Cheyenne - Torrington, Goshen, WY

Built 1953 Load: 22.2 t ADT: 9,384

WYO 294

Fair

Over: Alkali Creek

Jct Us 14A - North, Park, WY

Built 1957 Load: 22.2 t ADT: 792

WYO 319

Fair

Over: Middle Fork Bear Creek

Jct I-25 - Glendo, Platte, WY

Built 1922 Load: 22.2 t ADT: 179

Showing 101-150 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.