US Bridges

US 2 over Swamp Creek

Fair

Lincoln County, Montana · 24M NW Happys Inn · Structure no. P00001046+06351

Built
2013
12 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
54 ft
1 main span
Daily traffic
1,642
2023 count
Owner
State
State Highway Agency

About this bridge

US 2 over Swamp Creek is a prestressed concrete stringer/multi-beam or girder carrying US 2 over Swamp Creek in Lincoln County, Montana. It was built in 2013, so it is 12 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 1,642 vehicles a day, roughly 6% of them trucks, projected to reach 1,773 by 2043. The structure is 54 ft (16.6 m) long and 41 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesUS 2
CrossesSwamp Creek
Location24M NW Happys Inn
RouteU.S. Route 2
StateMontana
Coordinates48.20339, -115.45442
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length54 ft (16.6 m)
Longest span52 ft (16 m)
Deck width41 ft (12.6 m)
Roadway width39 ft (11.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,642 (2023)
Projected traffic1,773 by 2043
Trucks6%
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 Swamp Creek built?

It was built in 2013, making it 12 years old in 2025.

What condition is US 2 over Swamp Creek 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 October 2024.

How much traffic does US 2 over Swamp Creek carry?

About 1,642 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is US 2 over Swamp Creek?

The structure is 54 ft (16.6 m) long with a longest span of 52 ft (16 m) and a deck 41 ft wide.

Who owns US 2 over Swamp Creek?

It is owned by the State Highway Agency.