US Bridges

SH Cnty RD 140 over BNSF Railway

PoorPosted for load

Sheridan County, Wyoming · Parkman · Structure no. ECY

Built
1916
109 years old
Condition
Poor
inspected May 2024
Type
Truss - Thru
Steel
Length
148 ft
1 main span
Daily traffic
136
2024 count
Owner
County
County Highway Agency

About this bridge

SH Cnty RD 140 over BNSF Railway is a steel truss - thru carrying SH Cnty RD 140 over BNSF Railway in Sheridan County, Wyoming. It was built in 1916, so it is 109 years old, older than the Wyoming average of 48.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 136 vehicles a day, roughly 3% of them trucks, projected to reach 190 by 2043. The structure is 148 ft (45.1 m) long and 17 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesSH Cnty RD 140
CrossesBNSF Railway
LocationParkman
RouteCounty Highway 140
CountySheridan County
StateWyoming
Coordinates44.95951, -107.33546
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating15.5 US tons
Inventory rating11.2 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1 (+6 approach)
Design loadUnknown
Structure length148 ft (45.1 m)
Longest span34 ft (10.4 m)
Deck width17 ft (5.2 m)
Roadway width16 ft (4.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic136 (2024)
Projected traffic190 by 2043
Trucks3%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesRailroad
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$768,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was SH Cnty RD 140 over BNSF Railway built?

It was built in 1916, making it 109 years old in 2025.

What condition is SH Cnty RD 140 over BNSF Railway in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2024.

How much traffic does SH Cnty RD 140 over BNSF Railway carry?

About 136 vehicles per day (2024 count), of which roughly 3% are trucks.

How long is SH Cnty RD 140 over BNSF Railway?

The structure is 148 ft (45.1 m) long with a longest span of 34 ft (10.4 m) and a deck 17 ft wide.

Who owns SH Cnty RD 140 over BNSF Railway?

It is owned by the County Highway Agency.