US Bridges

S 5 over Eagle Creek

Fair

Sheridan County, Montana · Redstone · Structure no. P00022021+05881

Built
2011
14 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
191 ft
2 main spans
Daily traffic
323
2023 count
Owner
State
State Highway Agency

About this bridge

S 5 over Eagle Creek is a prestressed concrete stringer/multi-beam or girder carrying S 5 over Eagle Creek in Sheridan County, Montana. It was built in 2011, so it is 14 years old, younger than the Montana average of 47 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 323 vehicles a day, roughly 28% of them trucks, projected to reach 339 by 2043. The structure is 191 ft (58.2 m) long and 35 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesS 5
CrossesEagle Creek
LocationRedstone
RouteState Highway 5
CountySheridan County
StateMontana
Coordinates48.82461, -104.95771
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72 US tons
Inventory rating39 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length191 ft (58.2 m)
Longest span95 ft (28.9 m)
Deck width35 ft (10.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic323 (2023)
Projected traffic339 by 2043
Trucks28%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was S 5 over Eagle Creek built?

It was built in 2011, making it 14 years old in 2025.

What condition is S 5 over Eagle 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 November 2023.

How much traffic does S 5 over Eagle Creek carry?

About 323 vehicles per day (2023 count), of which roughly 28% are trucks.

How long is S 5 over Eagle Creek?

The structure is 191 ft (58.2 m) long with a longest span of 95 ft (28.9 m) and a deck 35 ft wide.

Who owns S 5 over Eagle Creek?

It is owned by the State Highway Agency.