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-90 EBL

Unknown

Over: Dry Creek Road

Buffalo - Gillette, Johnson, WY

Built 1961 ADT: 89

I-90 WBL

Unknown

Over: Dry Creek Road

Buffalo - Gillette, Johnson, WY

Built 1961 ADT: 89

I-90 EBL

Unknown

Over: Lower Powder River Road

Buffalo - Gillette, Johnson, WY

Built 1961 ADT: 97

I-90 WBL

Unknown

Over: Lower Powder River Road

Buffalo - Gillette, Johnson, WY

Built 1961 ADT: 97

I-90 EBL

Unknown

Over: Dead Horse Creek Road

Buffalo - Gillette, Johnson, WY

Built 1962 ADT: 97

I-90 WBL

Unknown

Over: Dead Horse Creek Road

Buffalo - Gillette, Johnson, WY

Built 1962 ADT: 97

I-90 WBL Off Ramp

Unknown

Over: I-25 - I-90 Ramp

Buffalo Marginal, Johnson, WY

Built 1964 ADT: 1,708

I-90 EBL

Unknown

Over: I-90 to I-25 Ramp

Buffalo Marginal, Johnson, WY

Built 1964 ADT: 130

I-90 WBL

Unknown

Over: Jo CR 1 (Rock Creek Rd)

Sheridan - Buffalo, Johnson, WY

Built 1963 ADT: 249

FSR 33

Fair

Over: CRAZY WOMAN CREEK

4.5 MI EAST OF HWY 16, Johnson, WY

Built 1961 ADT: 20

Jo Cnty Rd 78

Fair

Over: Red Wall Draw

6 Miles N. Of Barnum, Johnson, WY

Built 1930 Load: 7.3 t ADT: 13

FDR 33

Fair

Over: CRAZY WOMAN CREEK

1.7 MI EAST OF HWY 16, Johnson, WY

Built 1945 Load: 7.5 t ADT: 62

Jo Cnty Rd 212

Fair

Over: French Creek

Buffalo, Johnson, WY

Built 1950 Load: 8.9 t ADT: 390

FDR 394

Fair

Over: FOUR LAKES DITCH

3.0 MI W OF USFS RD 19, Johnson, WY

Built 1989 Load: 9.7 t ADT: 10

Jo Cnty Rd 204A

Fair

Over: Crazy Woman Creek

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

Built 1950 Load: 14.1 t ADT: 97

FDR 33

Fair

Over: CRAZY WOMAN CREEK

4.1 MI EAST OF HWY 16, Johnson, WY

Built 1954 Load: 20.7 t ADT: 5

WYO 192

Fair

Over: Carpenter Creek

Kaycee - Jct WYO 387, Johnson, WY

Built 1956 Load: 21.2 t ADT: 116

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-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 192

Fair

Over: Coal Creek

Kaycee - Jct WYO 387, Johnson, WY

Built 1956 Load: 22.5 t ADT: 116

WYO 196

Fair

Over: North Fork Powder River

Kaycee - Buffalo, Johnson, WY

Built 1935 Load: 22.7 t ADT: 309

Jo Cnty Rd 1

Fair

Over: Rock Creek

T51N R082W S15, Johnson, WY

Built 1954 Load: 22.9 t ADT: 249

I-25 NBL

Fair

Over: Machinery Pass

Kaycee - Buffalo, Johnson, WY

Built 1968 Load: 23.2 t ADT: 1,573

I-25 SBL

Fair

Over: Machinery Pass

Kaycee - Buffalo, Johnson, WY

Built 1968 Load: 23.2 t ADT: 1,472

I-90 EBL

Fair

Over: Machinery Pass

Buffalo - Gillette, Johnson, WY

Built 1961 Load: 23.2 t ADT: 2,077

I-90 WBL

Fair

Over: Machinery Pass

Buffalo - Gillette, Johnson, WY

Built 1961 Load: 23.2 t ADT: 2,020

WYO 192

Fair

Over: North Fork Powder River

Kaycee - Jct WYO 387, Johnson, WY

Built 1942 Load: 23.6 t ADT: 229

I-90 EBL

Fair

Over: Machinery Pass

Buffalo - Gillette, Johnson, WY

Built 1961 Load: 23.9 t ADT: 2,110

I-90 WBL

Fair

Over: Machinery Pass

Buffalo - Gillette, Johnson, WY

Built 1961 Load: 23.9 t ADT: 2,033

6214: BAR C ROAD

Fair

Over: MIDDLE FORK POWDER RIVER

4 miles S of Barnum, WY, Johnson, WY

Built 1976 Load: 24.0 t ADT: 30

I-90 EBL

Fair

Over: Machinery Pass

Buffalo - Gillette, Johnson, WY

Built 1961 Load: 24.5 t ADT: 2,077

I-90 WBL

Fair

Over: Machinery Pass

Buffalo - Gillette, Johnson, WY

Built 1961 Load: 24.5 t ADT: 2,020

I-25 NBL

Fair

Over: Machinery Pass

Casper - Kaycee, Johnson, WY

Built 1960 Load: 24.9 t ADT: 1,499

I-25 SBL

Fair

Over: Machinery Pass

Casper - Kaycee, Johnson, WY

Built 1960 Load: 24.9 t ADT: 1,439

I-90 EBL

Fair

Over: Machinery Pass

Buffalo - Gillette, Johnson, WY

Built 1962 Load: 25.1 t ADT: 1,823

I-90 WBL

Fair

Over: Machinery Pass

Buffalo - Gillette, Johnson, WY

Built 1962 Load: 25.1 t ADT: 1,833

I-90 EBL

Fair

Over: Machinery Pass

Sheridan - Buffalo, Johnson, WY

Built 1966 Load: 25.5 t ADT: 3,533

I-90 EBL

Fair

Over: Negro Creek

Buffalo - Gillette, Johnson, WY

Built 1960 Load: 25.5 t ADT: 2,127

I-90 WBL

Fair

Over: Negro Creek

Buffalo - Gillette, Johnson, WY

Built 1960 Load: 25.5 t ADT: 2,077

I-90 WBL

Fair

Over: Machinery Pass

Sheridan - Buffalo, Johnson, WY

Built 1966 Load: 25.8 t ADT: 3,700

Jo Cnty Rd 78

Fair

Over: Middle Fork Powder River

12 Mi. S.E. Of Kaycee, Johnson, WY

Built 1990 Load: 27.0 t ADT: 13

I-25 NBL

Fair

Over: Machinery Pass

Kaycee - Buffalo, Johnson, WY

Built 1968 Load: 27.2 t ADT: 1,573

I-25 SBL

Fair

Over: Machinery Pass

Kaycee - Buffalo, Johnson, WY

Built 1968 Load: 27.2 t ADT: 1,472

I-25 NBL

Fair

Over: Machinery Pass

Kaycee - Buffalo, Johnson, WY

Built 1968 Load: 27.2 t ADT: 1,573

I-25 SBL

Fair

Over: Machinery Pass

Kaycee - Buffalo, Johnson, WY

Built 1968 Load: 27.2 t ADT: 1,472

I-25 NBL

Fair

Over: Machinery Pass

Kaycee - Buffalo, Johnson, WY

Built 1971 Load: 27.2 t ADT: 1,967

I-25 NBL

Fair

Over: Machinery Pass

Kaycee - Buffalo, Johnson, WY

Built 1967 Load: 27.4 t ADT: 1,573

I-25 SBL

Fair

Over: Machinery Pass

Kaycee - Buffalo, Johnson, WY

Built 1967 Load: 27.4 t ADT: 1,472

FDR 31

Fair

Over: N FORK CRAZY WOMAN CREEK

9.5 MI N OF HWY 16, Johnson, WY

Built 1977 Load: 27.9 t ADT: 25

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.