US Bridges

Swift Dam RD over Sheep Creek 082

Good

Pondera County, Montana · 9M NW Dupuyer · Structure no. L37313008+00001

Built
2014
11 years old
Condition
Good
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
50 ft
1 main span
Daily traffic
40
2023 count
Owner
County
County Highway Agency

About this bridge

Swift Dam RD over Sheep Creek 082 is a steel stringer/multi-beam or girder carrying Swift Dam RD over Sheep Creek 082 in Pondera 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 good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 40 vehicles a day, roughly 3% of them trucks, projected to reach 42 by 2043. The structure is 50 ft (15.2 m) long and 25 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesSwift Dam RD
CrossesSheep Creek 082
Location9M NW Dupuyer
RouteCounty Highway 37313
StateMontana
Coordinates48.17369, -112.65917
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.6 US tons
Inventory rating38.3 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length50 ft (15.2 m)
Longest span49 ft (15 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2023)
Projected traffic42 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Swift Dam RD over Sheep Creek 082 built?

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

What condition is Swift Dam RD over Sheep Creek 082 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 November 2024.

How much traffic does Swift Dam RD over Sheep Creek 082 carry?

About 40 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Swift Dam RD over Sheep Creek 082?

The structure is 50 ft (15.2 m) long with a longest span of 49 ft (15 m) and a deck 25 ft wide.

Who owns Swift Dam RD over Sheep Creek 082?

It is owned by the County Highway Agency.