US Bridges

S Redstone RD over Wolf Creek 040

Fair

Sheridan County, Montana · 12M S Redstone · Structure no. L46401012+01001

Built
1950
75 years old, rebuilt 2005
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
30 ft
2 main spans
Daily traffic
64
2023 count
Owner
County
County Highway Agency

About this bridge

S Redstone RD over Wolf Creek 040 is a steel stringer/multi-beam or girder carrying S Redstone RD over Wolf Creek 040 in Sheridan County, Montana. It was built in 1950 and reconstructed in 2005, so it is 75 years old, older 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 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 64 vehicles a day, roughly 3% of them trucks, projected to reach 68 by 2043. The structure is 30 ft (9.1 m) long and 24 ft wide. If it were closed, the detour would be 21.7 mi (35 km).

Location

Open in Google Maps
CarriesS Redstone RD
CrossesWolf Creek 040
Location12M S Redstone
RouteCounty Highway 46401
CountySheridan County
StateMontana
Coordinates48.67399, -105.0057
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
Deck7 GoodSome minor problems.
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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating26 US tons
Inventory rating19 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans2
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span16 ft (4.8 m)
Deck width24 ft (7.4 m)
Roadway width20 ft (6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic64 (2023)
Projected traffic68 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.7 mi (35 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$54,000
NavigationNo navigation control on waterway

Frequently asked questions

When was S Redstone RD over Wolf Creek 040 built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 2005.

What condition is S Redstone RD over Wolf Creek 040 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 January 2024.

How much traffic does S Redstone RD over Wolf Creek 040 carry?

About 64 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is S Redstone RD over Wolf Creek 040?

The structure is 30 ft (9.1 m) long with a longest span of 16 ft (4.8 m) and a deck 24 ft wide.

Who owns S Redstone RD over Wolf Creek 040?

It is owned by the County Highway Agency.