US Bridges

S 254 over Redwater River

Fair

Dawson County, Montana · 11.1M NW Richey · Structure no. S00254053+02001

Built
2014
11 years old
Condition
Fair
inspected January 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
304 ft
3 main spans
Daily traffic
66
2023 count
Owner
State
State Highway Agency

About this bridge

S 254 over Redwater River is a prestressed concrete stringer/multi-beam or girder carrying S 254 over Redwater River in Dawson County, Montana. It was built in 2014, so it is 11 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 66 vehicles a day, roughly 12% of them trucks, projected to reach 69 by 2043. The structure is 304 ft (92.7 m) long and 31 ft wide. If it were closed, the detour would be 29.8 mi (48 km).

Location

Open in Google Maps
CarriesS 254
CrossesRedwater River
Location11.1M NW Richey
RouteState Highway 254
CountyDawson County
StateMontana
Coordinates47.71622, -105.25044
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating57 US tons
Inventory rating32 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length304 ft (92.7 m)
Longest span101 ft (30.9 m)
Deck width31 ft (9.5 m)
Roadway width18 ft (5.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic66 (2023)
Projected traffic69 by 2043
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed29.8 mi (48 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was S 254 over Redwater River built?

It was built in 2014, making it 11 years old in 2025.

What condition is S 254 over Redwater River 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 2023.

How much traffic does S 254 over Redwater River carry?

About 66 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is S 254 over Redwater River?

The structure is 304 ft (92.7 m) long with a longest span of 101 ft (30.9 m) and a deck 31 ft wide.

Who owns S 254 over Redwater River?

It is owned by the State Highway Agency.