US Bridges

Lil Bitterroot RD over Little Bitterroot RD 061

Good

Lake County, Montana · 7M NE Hot Springs · Structure no. 000000202403258

Built
2024
1 years old
Condition
Good
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
40 ft
1 main span
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

Lil Bitterroot RD over Little Bitterroot RD 061 is a steel stringer/multi-beam or girder carrying Lil Bitterroot RD over Little Bitterroot RD 061 in Lake County, Montana. It was built in 2024, so it is 1 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 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 40 ft (12.1 m) long and 24 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesLil Bitterroot RD
CrossesLittle Bitterroot RD 061
Location7M NE Hot Springs
RouteCounty Highway 24001
StateMontana
Coordinates47.61618, -114.54725
Functional classRural Major Collector

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 protection7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.8 US tons
Inventory rating44 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHL 93
Structure length40 ft (12.1 m)
Longest span39 ft (11.8 m)
Deck width24 ft (7.3 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2025)
Projected traffic100 by 2040
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 Lil Bitterroot RD over Little Bitterroot RD 061 built?

It was built in 2024, making it 1 years old in 2025.

What condition is Lil Bitterroot RD over Little Bitterroot RD 061 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 December 2024.

How much traffic does Lil Bitterroot RD over Little Bitterroot RD 061 carry?

About 100 vehicles per day (2025 count), of which roughly 3% are trucks.

How long is Lil Bitterroot RD over Little Bitterroot RD 061?

The structure is 40 ft (12.1 m) long with a longest span of 39 ft (11.8 m) and a deck 24 ft wide.

Who owns Lil Bitterroot RD over Little Bitterroot RD 061?

It is owned by the County Highway Agency.