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

I-25 NBL

Fair

Over: US 20 / 26 Connector

Casper Marginal, Natrona, WY

Built 1984 Load: 58.1 t ADT: 6,039

US 18

Fair

Over: Niobrara River

Lusk, Niobrara, WY

Built 1988 Load: 58.1 t ADT: 3,162

I-80 WBL

Fair

Over: UPRR / Killpecker Creek

Rock Springs Marginal, Sweetwater, WY

Built 2005 Load: 58.1 t ADT: 9,377

US 14

Fair

Over: Dry Creek

Cody - Jct WYO 310, Big Horn, WY

Built 1968 Load: 59.0 t ADT: 1,783

Absoroka Drive

Fair

Over: Wind River

Dubois, Fremont, WY

Built 2019 Load: 59.4 t ADT: 2,933

US 30

Fair

Over: I-80

Cheyenne - Nebraska Line, Laramie, WY

Built 1976 Load: 59.9 t ADT: 3,643

US 30

Fair

Over: UPRR

Cheyenne - Pine Bluffs, Laramie, WY

Built 1954 Load: 60.8 t ADT: 3,643

Fawn Creek Road

Fair

Over: Beaver Creek

17 Mi. N. Of Sundance, Crook, WY

Built 2000 Load: 60.8 t ADT: 61

US 16

Fair

Over: East Tensleep Creek

Buffalo-Tensleep Road, Big Horn, WY

Built 1987 Load: 61.7 t ADT: 797

Cr Cnty Rd 268

Fair

Over: Inyan Kara Creek

16 Mi West Of Sundance, Crook, WY

Built 1991 Load: 61.7 t ADT: 74

Sb Cnty Rd 190

Fair

Over: Duck Creek

1 Mile W Of Pinedale, Sublette, WY

Built 2003 Load: 62.6 t ADT: 49

3318: SHELL CREEK

Fair

Over: SAND CREEK

15 mi W of Baggs WY, Sweetwater, WY

Built 2002 Load: 62.9 t ADT: 100

US 26

Fair

Over: Wind River

Dubois-Diversion Dam Jct, Fremont, WY

Built 1983 Load: 63.5 t ADT: 1,554

Al Cnty Rd 57A

Fair

Over: Mill Creek

14 Mi N.E. Of Centennial, Albany, WY

Built 1999 Load: 64.4 t ADT: 51

Logan Avenue

Fair

Over: UPRR

Cheyenne/Dunn Ave, Laramie, WY

Built 2009 Load: 64.4 t ADT: 12,601

I-80 WBL

Fair

Over: I-80 Bus

Evanston - Green River, Uinta, WY

Built 1969 Load: 66.2 t ADT: 6,203

GRAND LOOP ROAD

Fair

Over: GIBBON RIVER

4.9 MI. SOUTH OF NORRIS J, Teton, WY

Built 1936 Load: 67.1 t ADT: 1,807

Co Cnty Rd 53

Fair

Over: S Fork Walker Creek

20 miles NE of Douglas, Converse, WY

Built 1950 Load: 67.3 t ADT: 260

Central Avenue

Fair

Over: I-25

Cheyenne Marginal, Laramie, WY

Built 1984 Load: 69.9 t ADT: 5,329

Wa Cnty Rd 82

Fair

Over: Nowood River

9 Mi Sw Of Big Trails, Washakie, WY

Built 2002 Load: 71.7 t ADT: 59

Ln Cnty Rd 150

Fair

Over: Salt River

1 Mile Sw Of Smoot, Lincoln, WY

Built 2006 Load: 71.7 t ADT: 280

Sh Cnty Rd 74

Fair

Over: East Wolf Creek

7 Mi S Of Ranchester, Sheridan, WY

Built 2003 Load: 73.5 t ADT: 457

Ui Cnty Rd 237

Fair

Over: Blacks Fork River

8 Mi. N.E. Of Lyman, Uinta, WY

Built 1986 Load: 74.4 t ADT: 87

US 287

Fair

Over: UPRR

Laramie Streets, Albany, WY

Built 2005 Load: 74.4 t ADT: 4,821

US 20

Fair

Over: North Platte River

Casper, Natrona, WY

Built 1979 Load: 76.2 t ADT: 12,085

US 16

Fair

Over: BNSF Railway

Basin-Greybull, Big Horn, WY

Built 2005 Load: 78.0 t ADT: 3,295

Co Cnty Rd 30

Fair

Over: Laprele Creek

8 Miles Nw Of Douglas, Converse, WY

Built 1997 Load: 84.4 t ADT: 38

ENTRANCE ROAD

Fair

Over: BELLE FOURCHE RIVER

26.6 MILES NORTHEAST OF I, Crook, WY

Built 1980 Load: 86.2 t ADT: 1,000

NO DATA ENTERED

Fair

Over: NO DATA ENTERED

NO DATA ENTERED, Park, WY

Built 1960 Load: 88.1 t ADT: 50

Co Cnty Rd 43

Fair

Over: Dry Creek

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

Built 1960 Load: 89.8 t ADT: 563

Ln Cnty Rd 134

Fair

Over: Stump Creek

1.9 Miles West Of Auburn, Lincoln, WY

Built 1988 Load: 89.8 t ADT: 120

Bh Cnty Rd R5C

Fair

Over: Farmers Canal

12 Miles West Of Otto, Big Horn, WY

Built 1994 Load: 89.8 t ADT: 20

Skyline Drive

Fair

Over: BNSF Railway

Guernsey State Park, Platte, WY

Built 1998 Load: 91.6 t ADT: 206

Cb Cnty Rd 408

Fair

Over: Jack Creek

3 Mi. N.W. Of Saratoga, Carbon, WY

Built 1982 Load: 99.6 t ADT: 97

County Road 90

Fair

Over: Ft Laramie Canal

4.1 mi W-SW of Ft Laramie, Goshen, WY

Built 1915 Load: 99.9 t ADT: 2

County Road 60

Fair

Over: Ft Laramie Canal

5.2 mi W-NW of Veteran WY, Goshen, WY

Built 1913 Load: 99.9 t ADT: 2

IRR BIA RTE 101

Fair

Over: MUDDY CREEK

4 KM SOUTH OF MAIL CAMP, Fremont, WY

Built 1975 Load: 99.9 t ADT: 90

Bh Cnty Rd R2C

Fair

Over: Whistle Creek

8 Miles S.W. Of Byron, Big Horn, WY

Built 1994 Load: 99.9 t ADT: 18

Co Cnty Rd 24

Fair

Over: Laprele Creek

25 Miles Sw Of Douglas, Converse, WY

Built 2009 Load: 99.9 t ADT: 52

NFSR

Good

Over: SUNLIGHT CREEK

NO DATA ENTERED, Park, WY

Built 1972 ADT: 50

FDR

Good

Over: WARM SPRINGS CREEK

NO DATA ENTERED, Fremont, WY

Built 1981 ADT: 50

LUCERNE

Good

Over: LINWOOD

.3 MI E JCT WYO-530, Sweetwater, WY

Built 1963 ADT: 20

FOREST ROAD 10138

Good

Over: LITTLE GREYS RIVER

10 MI. EAST OF ALPINE WY., Lincoln, WY

Built 1968 ADT: 50

NO DATA ENTERED

Good

Over: GROS VENTRE RIVER

NO DATA ENTERED, Teton, WY

Built 2009 ADT: 75

NO DATA ENTERED

Good

Over: DARBY CREEK

NO DATA ENTERED, Teton, WY

Built 2019 ADT: 50

Pl Cnty Rd 204

Good

Over: Laramie River

9.5 mi west of Wheatland, Platte, WY

Built 2016 Load: 0.0 t ADT: 14

Forest Road 443

Good

Over: COW CREEK

3 MI N OF SH 70, Carbon, WY

Built 1986 Load: 9.1 t ADT: 12

FDR

Good

Over: LITTLE POPO AGIE RIVER

T31N R100W S32, Fremont, WY

Built 2011 Load: 10.0 t ADT: 50

FOREST ROAD 10303

Good

Over: BIG SANDY CREEK

NO DATA ENTERED, Sublette, WY

Built 2006 Load: 12.0 t ADT: 50

I-25 Service Road

Good

Over: Sheep Creek

Bar Nunn North, Natrona, WY

Built 1950 Load: 12.4 t ADT: 85

Showing 1,951-2,000 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.