US Bridges

US 2 over Swamp Creek

Good

Lincoln County, Montana · 22 Miles Northwest of Hap · Structure no. 000000202005019

Built
2018
7 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
58 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 2018, so it is 7 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 1,642 vehicles a day, roughly 6% of them trucks, projected to reach 1,773 by 2043. The structure is 58 ft (17.8 m) long and 41 ft wide. If it were closed, the detour would be 119.9 mi (193 km).

CarriesUS 2
CrossesSwamp Creek
Location22 Miles Northwest of Hap
RouteU.S. Route 1
StateMontana
Coordinates48.17559, -115.4484
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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64 US tons
Inventory rating46 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length58 ft (17.8 m)
Longest span56 ft (17 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 closed119.9 mi (193 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 2018, making it 7 years old in 2025.

What condition is US 2 over Swamp 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 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 58 ft (17.8 m) long with a longest span of 56 ft (17 m) and a deck 41 ft wide.

Who owns US 2 over Swamp Creek?

It is owned by the State Highway Agency.