US Bridges

US 93 Bypass over Ashley Creek

Good

Flathead County, Montana · SW Kalispell · Structure no. P00109000+05101

Built
2010
15 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
146 ft
1 main span
Daily traffic
8,967
2023 count
Owner
State
State Highway Agency

About this bridge

US 93 Bypass over Ashley Creek is a prestressed concrete stringer/multi-beam or girder carrying US 93 Bypass over Ashley Creek in Flathead County, Montana. It was built in 2010, so it is 15 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 8,967 vehicles a day, roughly 2% of them trucks, projected to reach 9,864 by 2043. The structure is 146 ft (44.4 m) long and 45 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesUS 93 Bypass
CrossesAshley Creek
LocationSW Kalispell
RouteU.S. Route 109
StateMontana
Coordinates48.15554, -114.29888
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating58 US tons
Inventory rating30 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length146 ft (44.4 m)
Longest span144 ft (44 m)
Deck width45 ft (13.6 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,967 (2023)
Projected traffic9,864 by 2043
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 93 Bypass over Ashley Creek built?

It was built in 2010, making it 15 years old in 2025.

What condition is US 93 Bypass over Ashley Creek 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 October 2024.

How much traffic does US 93 Bypass over Ashley Creek carry?

About 8,967 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is US 93 Bypass over Ashley Creek?

The structure is 146 ft (44.4 m) long with a longest span of 144 ft (44 m) and a deck 45 ft wide.

Who owns US 93 Bypass over Ashley Creek?

It is owned by the State Highway Agency.