US Bridges

US 93 over Lolo Creek

Good

Missoula County, Montana · Lolo · Structure no. P00007082+08731

Built
1965
60 years old, rebuilt 2000
Condition
Good
inspected February 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
123 ft
2 main spans
Daily traffic
20,994
2023 count
Owner
State
State Highway Agency

About this bridge

US 93 over Lolo Creek is a prestressed concrete stringer/multi-beam or girder carrying US 93 over Lolo Creek in Missoula County, Montana. It was built in 1965 and reconstructed in 2000, so it is 60 years old, older 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 20,994 vehicles a day, roughly 1% of them trucks, projected to reach 22,254 by 2043. The structure is 123 ft (37.5 m) long and 94 ft wide. If it were closed, the detour would be 78.3 mi (126 km).

CarriesUS 93
CrossesLolo Creek
LocationLolo
RouteU.S. Route 93
StateMontana
Coordinates46.74978, -114.08301
Functional classRural Principal Arterial - Other

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 evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47 US tons
Inventory rating35.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length123 ft (37.5 m)
Longest span60 ft (18.3 m)
Deck width94 ft (28.7 m)
Roadway width80 ft (24.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,994 (2023)
Projected traffic22,254 by 2043
Trucks1%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed78.3 mi (126 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 over Lolo Creek built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 2000.

What condition is US 93 over Lolo 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 February 2024.

How much traffic does US 93 over Lolo Creek carry?

About 20,994 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is US 93 over Lolo Creek?

The structure is 123 ft (37.5 m) long with a longest span of 60 ft (18.3 m) and a deck 94 ft wide.

Who owns US 93 over Lolo Creek?

It is owned by the State Highway Agency.