US Bridges

Deschamps LN over Lavalle Creek 022

Good

Missoula County, Montana · 8M NW Missoula · Structure no. L32184001+09001

Built
2009
16 years old
Condition
Good
inspected February 2024
Type
Channel Beam
Prestressed Concrete
Length
60 ft
1 main span
Daily traffic
673
2023 count
Owner
County
County Highway Agency

About this bridge

Deschamps LN over Lavalle Creek 022 is a prestressed concrete channel beam carrying Deschamps LN over Lavalle Creek 022 in Missoula County, Montana. It was built in 2009, so it is 16 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 673 vehicles a day, roughly 3% of them trucks, projected to reach 717 by 2043. The structure is 60 ft (18.4 m) long and 34 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesDeschamps LN
CrossesLavalle Creek 022
Location8M NW Missoula
RouteCounty Highway 32184
StateMontana
Coordinates46.92596, -114.14543
Functional classRural Local

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 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to 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 rating48 US tons
Inventory rating30 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length60 ft (18.4 m)
Longest span59 ft (18 m)
Deck width34 ft (10.5 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic673 (2023)
Projected traffic717 by 2043
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 proposedNone recorded
Estimated improvement cost$153,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Deschamps LN over Lavalle Creek 022 built?

It was built in 2009, making it 16 years old in 2025.

What condition is Deschamps LN over Lavalle Creek 022 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 2024.

How much traffic does Deschamps LN over Lavalle Creek 022 carry?

About 673 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Deschamps LN over Lavalle Creek 022?

The structure is 60 ft (18.4 m) long with a longest span of 59 ft (18 m) and a deck 34 ft wide.

Who owns Deschamps LN over Lavalle Creek 022?

It is owned by the County Highway Agency.