US Bridges

Wyo 59 over BNSF Railway

Fair

Campbell County, Wyoming · Gillette - Mont Line · Structure no. DIJ

Built
1979
46 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
291 ft
3 main spans
Daily traffic
1,336
2024 count
Owner
State
State Highway Agency

About this bridge

Wyo 59 over BNSF Railway is a steel continuous stringer/multi-beam or girder carrying Wyo 59 over BNSF Railway in Campbell County, Wyoming. It was built in 1979, so it is 46 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 1,336 vehicles a day, roughly 22% of them trucks, projected to reach 1,870 by 2043. The structure is 291 ft (88.7 m) long and 39 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesWyo 59
CrossesBNSF Railway
LocationGillette - Mont Line
RouteState Highway 59
CountyCampbell County
StateWyoming
Coordinates44.39796, -105.46084
Functional classRural Minor Arterial

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.1 US tons
Inventory rating29 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length291 ft (88.7 m)
Longest span116 ft (35.4 m)
Deck width39 ft (11.8 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,336 (2024)
Projected traffic1,870 by 2043
Trucks22%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.9 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Wyo 59 over BNSF Railway built?

It was built in 1979, making it 46 years old in 2025.

What condition is Wyo 59 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 July 2024.

How much traffic does Wyo 59 over BNSF Railway carry?

About 1,336 vehicles per day (2024 count), of which roughly 22% are trucks.

How long is Wyo 59 over BNSF Railway?

The structure is 291 ft (88.7 m) long with a longest span of 116 ft (35.4 m) and a deck 39 ft wide.

Who owns Wyo 59 over BNSF Railway?

It is owned by the State Highway Agency.