US Bridges

S 5 over Redstone Creek

Good

Sheridan County, Montana · 2M SE Redstone · Structure no. P00022023+08941

Built
2011
14 years old
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
101 ft
1 main span
Daily traffic
511
2023 count
Owner
State
State Highway Agency

About this bridge

S 5 over Redstone Creek is a prestressed concrete stringer/multi-beam or girder carrying S 5 over Redstone 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 511 vehicles a day, roughly 18% of them trucks, projected to reach 537 by 2043. The structure is 101 ft (30.8 m) long and 35 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesS 5
CrossesRedstone Creek
Location2M SE Redstone
RouteState Highway 5
StateMontana
Coordinates48.80559, -104.91872
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length101 ft (30.8 m)
Longest span101 ft (30.8 m)
Deck width35 ft (10.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic511 (2023)
Projected traffic537 by 2043
Trucks18%
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 Redstone Creek built?

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

What condition is S 5 over Redstone Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2023.

How much traffic does S 5 over Redstone Creek carry?

About 511 vehicles per day (2023 count), of which roughly 18% are trucks.

How long is S 5 over Redstone Creek?

The structure is 101 ft (30.8 m) long with a longest span of 101 ft (30.8 m) and a deck 35 ft wide.

Who owns S 5 over Redstone Creek?

It is owned by the State Highway Agency.