US Bridges

SH Cnty RD 139 over BNSF Railway

Fair

Sheridan County, Wyoming · 4 MI N.E. of Sheridan · Structure no. FNF

Built
1988
37 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
121 ft
3 main spans
Daily traffic
891
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

SH Cnty RD 139 over BNSF Railway is a steel continuous stringer/multi-beam or girder carrying SH Cnty RD 139 over BNSF Railway in Sheridan County, Wyoming. It was built in 1988, so it is 37 years old, younger than the Wyoming average of 48.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 891 vehicles a day, roughly 14% of them trucks, projected to reach 1,247 by 2043. The structure is 121 ft (36.9 m) long and 31 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesSH Cnty RD 139
CrossesBNSF Railway
Location4 MI N.E. of Sheridan
RouteCity Street 139
CountySheridan County
StateWyoming
Coordinates44.79531, -106.92734
Functional classUrban Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45 US tons
Inventory rating34 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length121 ft (36.9 m)
Longest span46 ft (14 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic891 (2024)
Projected traffic1,247 by 2043
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$57,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was SH Cnty RD 139 over BNSF Railway built?

It was built in 1988, making it 37 years old in 2025.

What condition is SH Cnty RD 139 over BNSF Railway in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2023.

How much traffic does SH Cnty RD 139 over BNSF Railway carry?

About 891 vehicles per day (2024 count), of which roughly 14% are trucks.

How long is SH Cnty RD 139 over BNSF Railway?

The structure is 121 ft (36.9 m) long with a longest span of 46 ft (14 m) and a deck 31 ft wide.

Who owns SH Cnty RD 139 over BNSF Railway?

It is owned by the City or Municipal Highway Agency.