US Bridges

US 2 over Rock Creek Canal

Fair

Valley County, Montana · 4M E Hinsdale · Structure no. P00001517+08091

Built
1996
29 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
60 ft
1 main span
Daily traffic
1,414
2023 count
Owner
State
State Highway Agency

About this bridge

US 2 over Rock Creek Canal is a prestressed concrete stringer/multi-beam or girder carrying US 2 over Rock Creek Canal in Valley County, Montana. It was built in 1996, so it is 29 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 1,414 vehicles a day, roughly 11% of them trucks, projected to reach 1,485 by 2043. The structure is 60 ft (18.3 m) long and 42 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesUS 2
CrossesRock Creek Canal
Location4M E Hinsdale
RouteU.S. Route 2
StateMontana
Coordinates48.3974, -106.9852
Functional classRural Principal Arterial - Other

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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58 US tons
Inventory rating32 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length60 ft (18.3 m)
Longest span59 ft (18 m)
Deck width42 ft (12.9 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,414 (2023)
Projected traffic1,485 by 2043
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 2 over Rock Creek Canal built?

It was built in 1996, making it 29 years old in 2025.

What condition is US 2 over Rock Creek Canal 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 May 2024.

How much traffic does US 2 over Rock Creek Canal carry?

About 1,414 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is US 2 over Rock Creek Canal?

The structure is 60 ft (18.3 m) long with a longest span of 59 ft (18 m) and a deck 42 ft wide.

Who owns US 2 over Rock Creek Canal?

It is owned by the State Highway Agency.