Johnson County, WY

204 public highway bridges

Johnson County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Johnson County, Wyoming contains 204 public highway bridges. Roughly 22.5% are rated “Good,” 46.1% “Fair,” and 2.5% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.

Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

204
Total Bridges
22.5%
Good
46.1%
Fair
2.5%
Poor Condition

Condition Distribution

Good
22.5% (46)
Fair
46.1% (94)
Poor
2.5% (5)

All Bridges (204)

I-25 SBL

Fair

Over: Machinery Pass

Kaycee - Buffalo, Johnson, WY

Built 1968 Load: 28.1 t ADT: 1,770

I-90 EBL

Fair

Over: Machinery Pass

Buffalo - Gillette, Johnson, WY

Built 1961 Load: 28.1 t ADT: 2,110

I-90 WBL

Fair

Over: Machinery Pass

Buffalo - Gillette, Johnson, WY

Built 1961 Load: 28.1 t ADT: 2,033

I-25 NBL

Fair

Over: Machinery Pass

Buffalo Marginal, Johnson, WY

Built 1963 Load: 28.4 t ADT: 2,029

I-25 SBL

Fair

Over: Machinery Pass

Buffalo Marginal, Johnson, WY

Built 1963 Load: 28.4 t ADT: 1,717

I-25 NBL

Fair

Over: Machinery Pass

Casper - Kaycee, Johnson, WY

Built 1965 Load: 29.0 t ADT: 1,499

I-25 SBL

Fair

Over: Machinery Pass

Casper - Kaycee, Johnson, WY

Built 1965 Load: 29.0 t ADT: 1,439

I-90 WBL

Fair

Over: East Fork Dry Creek

Buffalo - Gillette, Johnson, WY

Built 1960 Load: 29.0 t ADT: 2,000

I-90 EBL

Fair

Over: Piney Creek

Sheridan - Buffalo, Johnson, WY

Built 1966 Load: 29.9 t ADT: 3,577

I-90 WBL

Fair

Over: Piney Creek

Sheridan - Buffalo, Johnson, WY

Built 1966 Load: 29.9 t ADT: 3,758

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-25 NBL

Fair

Over: Machinery Pass

Kaycee - Buffalo, Johnson, WY

Built 1968 Load: 30.8 t ADT: 1,758

I-25 SBL

Fair

Over: Machinery Pass

Kaycee - Buffalo, Johnson, WY

Built 1968 Load: 30.8 t ADT: 1,571

I-25 NBL

Fair

Over: Machinery Pass

Kaycee - Buffalo, Johnson, WY

Built 1968 Load: 30.8 t ADT: 1,967

I-90 EBL

Fair

Over: Lake Desmet Ditch

Sheridan - Buffalo, Johnson, WY

Built 1966 Load: 30.8 t ADT: 3,577

I-90 WBL

Fair

Over: Lake Desmet Ditch

Sheridan - Buffalo, Johnson, WY

Built 1966 Load: 30.8 t ADT: 3,758

I-90 EBL

Fair

Over: East Fork Dry Creek

Buffalo - Gillette, Johnson, WY

Built 1960 Load: 30.8 t ADT: 2,080

FDR 28

Fair

Over: N.FORK CRAZY WOMAN CREEK

1.2 MI NORTH OF HWY 16, Johnson, WY

Built 1977 Load: 31.1 t ADT: 10

I-90 EBL

Fair

Over: Powder River

Buffalo - Gillette, Johnson, WY

Built 1961 Load: 31.7 t ADT: 1,820

I-90 WBL

Fair

Over: Powder River

Buffalo - Gillette, Johnson, WY

Built 1961 Load: 31.7 t ADT: 1,833

I-25 SBL

Fair

Over: North Fork Powder River

Kaycee - Buffalo, Johnson, WY

Built 1971 Load: 32.0 t ADT: 1,472

WYO 387

Fair

Over: Meadow Creek

Midwest - Reno Jct, Johnson, WY

Built 1975 Load: 32.7 t ADT: 1,672

Jo Cnty Rd 132

Fair

Over: Clear Creek

Buffalo, Johnson, WY

Built 1976 Load: 32.7 t ADT: 97

Jo Cnty Rd 252

Fair

Over: Clear Creek

Buffalo, Johnson, WY

Built 1955 Load: 32.7 t ADT: 2,576

Lowr Powder Rvr Rd

Fair

Over: Juniper Draw

South Of I-90, Johnson, WY

Built 1960 Load: 32.7 t ADT: 89

WYO 192

Fair

Over: 15 Mile Draw

10 Miles S.E. Of Kaycee, Johnson, WY

Built 1992 Load: 32.7 t ADT: 229

I-25 NBL

Fair

Over: French Creek

Buffalo Marginal, Johnson, WY

Built 1963 Load: 32.7 t ADT: 2,029

I-25 SBL

Fair

Over: French Creek

Buffalo Marginal, Johnson, WY

Built 1963 Load: 32.7 t ADT: 1,717

I-25 NBL

Fair

Over: M Fork Crazy Woman Creek

Kaycee - Buffalo, Johnson, WY

Built 1968 Load: 33.0 t ADT: 1,573

I-90 EBL

Fair

Over: Clear Creek

Buffalo Marginal, Johnson, WY

Built 1959 Load: 33.6 t ADT: 2,127

I-90 WBL

Fair

Over: Clear Creek

Buffalo Marginal, Johnson, WY

Built 1959 Load: 33.6 t ADT: 2,077

Jo Cnty Rd 40

Fair

Over: Clear Creek

3 Miles N.,E. Of Buffalo, Johnson, WY

Built 1986 Load: 33.6 t ADT: 89

WYO 196

Fair

Over: Muddy Creek

Kaycee-Buffalo, Johnson, WY

Built 1989 Load: 33.6 t ADT: 51

WYO 196

Fair

Over: N F Crazy Woman Creek

Kaycee-Buffalo, Johnson, WY

Built 1989 Load: 33.6 t ADT: 51

Jo Cnty Rd 204B

Fair

Over: Powder River

34 Miles S.E. Of Buffalo, Johnson, WY

Built 1983 Load: 34.5 t ADT: 31

Jo Cnty Rd 51

Fair

Over: Murphy Creek

13 Miles S. Of Kaycee, Johnson, WY

Built 1983 Load: 34.5 t ADT: 53

Jo Cnty Rd 266

Fair

Over: North Fork Powder River

1/4 Mile W. Of Mayowrth, Johnson, WY

Built 1992 Load: 34.5 t ADT: 97

Jo Cnty Rd 13

Fair

Over: Crazy Woman Creek

8 Miles South Of Buffalo, Johnson, WY

Built 1983 Load: 35.4 t ADT: 75

I-25 NBL

Fair

Over: South Fork Powder River

Casper - Kaycee, Johnson, WY

Built 1960 Load: 35.6 t ADT: 1,499

WYO 387

Fair

Over: JJ Draw

Midwest - Reno Jct, Johnson, WY

Built 1978 Load: 36.3 t ADT: 1,784

US 16

Fair

Over: Watt Draw

Buffalo-Ucross, Johnson, WY

Built 1986 Load: 36.3 t ADT: 378

I-90 / US 87 Bus

Fair

Over: French Creek

Buffalo, Main Street, Johnson, WY

Built 1955 Load: 37.2 t ADT: 1,438

I-90 EBL

Fair

Over: Dead Horse Creek

Buffalo - Gillette, Johnson, WY

Built 1962 Load: 37.2 t ADT: 1,823

I-90 WBL

Fair

Over: Dead Horse Creek

Buffalo - Gillette, Johnson, WY

Built 1962 Load: 37.2 t ADT: 1,833

WYO 192

Fair

Over: Powder River

Kaycee - Jct WYO 387, Johnson, WY

Built 1959 Load: 37.2 t ADT: 116

I-25 NBL

Fair

Over: Murphy Creek

Casper - Kaycee, Johnson, WY

Built 1960 Load: 38.5 t ADT: 1,499

I-25 SBL

Fair

Over: Murphy Creek

Casper - Kaycee, Johnson, WY

Built 1960 Load: 38.9 t ADT: 1,439

WYO 196

Fair

Over: Bull Creek

Kaycee-Buffalo, Johnson, WY

Built 1989 Load: 39.9 t ADT: 395

I-25 / US 87 Bus

Fair

Over: Clear Creek

Buffalo Main Street, Johnson, WY

Built 1975 Load: 40.8 t ADT: 5,720

Read our methodology - how this data is sourced, computed, and verified.

Related

Browse all → | Rankings →
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.