US Bridges

Lil Bitterroot RD over Little Bitterroot R 063

Good

Lake County, Montana · 7M E Hot Springs · Structure no. L24001034+00001

Built
2013
12 years old
Condition
Good
inspected February 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
60 ft
1 main span
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

Lil Bitterroot RD over Little Bitterroot R 063 is a steel stringer/multi-beam or girder carrying Lil Bitterroot RD over Little Bitterroot R 063 in Lake 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 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 60 ft (18.3 m) long and 20 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesLil Bitterroot RD
CrossesLittle Bitterroot R 063
Location7M E Hot Springs
RouteCounty Highway 24001
CountyLake County
StateMontana
Coordinates47.60692, -114.54091
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 protection8 Very GoodNo problems noted.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.1 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length60 ft (18.3 m)
Longest span56 ft (17.1 m)
Deck width20 ft (6.1 m)
Roadway width19 ft (5.8 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 closed8.1 mi (13 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$144,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Lil Bitterroot RD over Little Bitterroot R 063 built?

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

What condition is Lil Bitterroot RD over Little Bitterroot R 063 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 February 2025.

How much traffic does Lil Bitterroot RD over Little Bitterroot R 063 carry?

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

How long is Lil Bitterroot RD over Little Bitterroot R 063?

The structure is 60 ft (18.3 m) long with a longest span of 56 ft (17.1 m) and a deck 20 ft wide.

Who owns Lil Bitterroot RD over Little Bitterroot R 063?

It is owned by the County Highway Agency.