US Bridges

P00109 over Old Reserve Drive

Good

Flathead County, Montana · Kalispell · Structure no. 000000000007040

Built
2016
9 years old
Condition
Good
inspected January 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
188 ft
3 main spans
Daily traffic
19,964
2023 count
Owner
State
State Highway Agency

About this bridge

P00109 over Old Reserve Drive is a prestressed concrete stringer/multi-beam or girder carrying P00109 over Old Reserve Drive in Flathead County, Montana. It was built in 2016, so it is 9 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 19,964 vehicles a day, roughly 1% of them trucks, projected to reach 21,960 by 2043. The structure is 188 ft (57.2 m) long and 75 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesP00109
CrossesOld Reserve Drive
LocationKalispell
RouteU.S. Route 109
StateMontana
Coordinates48.23556, -114.34056
Functional classUrban Other Principal Arterial

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.6 US tons
Inventory rating49.3 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length188 ft (57.2 m)
Longest span112 ft (34.1 m)
Deck width75 ft (23 m)
Roadway width73 ft (22.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,964 (2023)
Projected traffic21,960 by 2043
Trucks1%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was P00109 over Old Reserve Drive built?

It was built in 2016, making it 9 years old in 2025.

What condition is P00109 over Old Reserve Drive 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 January 2025.

How much traffic does P00109 over Old Reserve Drive carry?

About 19,964 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is P00109 over Old Reserve Drive?

The structure is 188 ft (57.2 m) long with a longest span of 112 ft (34.1 m) and a deck 75 ft wide.

Who owns P00109 over Old Reserve Drive?

It is owned by the State Highway Agency.