US Bridges

Rogers Lake RD over Ashley Creek 098

Fair

Flathead County, Montana · 5M SE Marion · Structure no. L15636000+02001

Built
1999
26 years old
Condition
Fair
inspected July 2023
Type
Channel Beam
Prestressed Concrete
Length
33 ft
1 main span
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

Rogers Lake RD over Ashley Creek 098 is a prestressed concrete channel beam carrying Rogers Lake RD over Ashley Creek 098 in Flathead County, Montana. It was built in 1999, so it is 26 years old, younger than the Montana average of 47 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 33 ft (10 m) long and 30 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesRogers Lake RD
CrossesAshley Creek 098
Location5M SE Marion
RouteCounty Highway 15636
CountyFlathead County
StateMontana
Coordinates48.09498, -114.55163
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being 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 rating33 US tons
Inventory rating18 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length33 ft (10 m)
Longest span33 ft (10 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9 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 closed11.8 mi (19 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 Rogers Lake RD over Ashley Creek 098 built?

It was built in 1999, making it 26 years old in 2025.

What condition is Rogers Lake RD over Ashley Creek 098 in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2023.

How much traffic does Rogers Lake RD over Ashley Creek 098 carry?

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

How long is Rogers Lake RD over Ashley Creek 098?

The structure is 33 ft (10 m) long with a longest span of 33 ft (10 m) and a deck 30 ft wide.

Who owns Rogers Lake RD over Ashley Creek 098?

It is owned by the County Highway Agency.