US Bridges

US 93 over Sweathouse Creek

Good

Ravalli County, Montana · Victor · Structure no. P00007059+07291

Built
2010
15 years old
Condition
Good
inspected March 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
84 ft
1 main span
Daily traffic
13,924
2023 count
Owner
State
State Highway Agency

About this bridge

US 93 over Sweathouse Creek is a prestressed concrete stringer/multi-beam or girder carrying US 93 over Sweathouse Creek in Ravalli County, Montana. It was built in 2010, so it is 15 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 13,924 vehicles a day, roughly 2% of them trucks, projected to reach 15,108 by 2043. The structure is 84 ft (25.5 m) long and 96 ft wide. If it were closed, the detour would be 78.3 mi (126 km).

CarriesUS 93
CrossesSweathouse Creek
LocationVictor
RouteU.S. Route 93
StateMontana
Coordinates46.42428, -114.14448
Functional classRural Principal Arterial - Other

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57 US tons
Inventory rating26 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 15
Structure length84 ft (25.5 m)
Longest span84 ft (25.5 m)
Deck width96 ft (29.3 m)
Roadway width82 ft (25.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,924 (2023)
Projected traffic15,108 by 2043
Trucks2%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed78.3 mi (126 km)
TollOn a free road
National Highway SystemYes

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$222,000
NavigationNo navigation control on waterway

Frequently asked questions

When was US 93 over Sweathouse Creek built?

It was built in 2010, making it 15 years old in 2025.

What condition is US 93 over Sweathouse 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 March 2024.

How much traffic does US 93 over Sweathouse Creek carry?

About 13,924 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is US 93 over Sweathouse Creek?

The structure is 84 ft (25.5 m) long with a longest span of 84 ft (25.5 m) and a deck 96 ft wide.

Who owns US 93 over Sweathouse Creek?

It is owned by the State Highway Agency.