US Bridges

Lower Valley RD over Ashley Creek 001

Good

Flathead County, Montana · 5M SE Kalispell · Structure no. L15001004+06001

Built
1995
30 years old
Condition
Good
inspected November 2023
Type
Tee Beam
Prestressed Concrete
Length
88 ft
1 main span
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

Lower Valley RD over Ashley Creek 001 is a prestressed concrete tee beam carrying Lower Valley RD over Ashley Creek 001 in Flathead County, Montana. It was built in 1995, so it is 30 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 88 ft (26.9 m) long and 30 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesLower Valley RD
CrossesAshley Creek 001
Location5M SE Kalispell
RouteCounty Highway 15001
StateMontana
Coordinates48.14618, -114.21516
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating23.9 US tons
Inventory rating14.7 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length88 ft (26.9 m)
Longest span88 ft (26.9 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 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 closed6.8 mi (11 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 Lower Valley RD over Ashley Creek 001 built?

It was built in 1995, making it 30 years old in 2025.

What condition is Lower Valley RD over Ashley Creek 001 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 2023.

How much traffic does Lower Valley RD over Ashley Creek 001 carry?

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

How long is Lower Valley RD over Ashley Creek 001?

The structure is 88 ft (26.9 m) long with a longest span of 88 ft (26.9 m) and a deck 30 ft wide.

Who owns Lower Valley RD over Ashley Creek 001?

It is owned by the County Highway Agency.