US Bridges

Wyo 345 over Five Mile Creek

Fair

Sheridan County, Wyoming · Montana Line - Sheridan · Structure no. BAR

Built
1952
73 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
101 ft
3 main spans
Daily traffic
501
2024 count
Owner
State
State Highway Agency

About this bridge

Wyo 345 over Five Mile Creek is a steel continuous stringer/multi-beam or girder carrying Wyo 345 over Five Mile Creek in Sheridan County, Wyoming. It was built in 1952, so it is 73 years old, older 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 6 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 501 vehicles a day, roughly 2% of them trucks, projected to reach 701 by 2043. The structure is 101 ft (30.7 m) long and 35 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesWyo 345
CrossesFive Mile Creek
LocationMontana Line - Sheridan
RouteState Highway 345
StateWyoming
Coordinates44.9168, -107.1818
Functional classRural Major 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65 US tons
Inventory rating39 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length101 ft (30.7 m)
Longest span37 ft (11.4 m)
Deck width35 ft (10.7 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic501 (2024)
Projected traffic701 by 2043
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Wyo 345 over Five Mile Creek built?

It was built in 1952, making it 73 years old in 2025.

What condition is Wyo 345 over Five Mile Creek 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 June 2024.

How much traffic does Wyo 345 over Five Mile Creek carry?

About 501 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is Wyo 345 over Five Mile Creek?

The structure is 101 ft (30.7 m) long with a longest span of 37 ft (11.4 m) and a deck 35 ft wide.

Who owns Wyo 345 over Five Mile Creek?

It is owned by the State Highway Agency.