US Bridges

East Fk Lolo CR over Lolo Creek

Fair

Missoula County, Montana · East Fk Lolo · Structure no. 011603000000092

Built
1946
79 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
49 ft
2 main spans
Daily traffic
50
Owner
Federal
U.S. Forest Service

About this bridge

East Fk Lolo CR over Lolo Creek is a wood or timber stringer/multi-beam or girder carrying East Fk Lolo CR over Lolo Creek in Missoula County, Montana. It was built in 1946, so it is 79 years old, older 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 50 vehicles a day, projected to reach 75 by 2045. The structure is 49 ft (14.8 m) long and 16 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

Location

Open in Google Maps
CarriesEast Fk Lolo CR
CrossesLolo Creek
LocationEast Fk Lolo
RouteFederal Lands Road 461
CountyMissoula County
StateMontana
Coordinates46.71269, -114.53288
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.1 US tons
Inventory rating51.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadHS 25 or greater
Structure length49 ft (14.8 m)
Longest span23 ft (7 m)
Deck width16 ft (4.8 m)
Roadway width13 ft (4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (—)
Projected traffic75 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.2 mi (158 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was East Fk Lolo CR over Lolo Creek built?

It was built in 1946, making it 79 years old in 2025.

What condition is East Fk Lolo CR over Lolo Creek 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 November 2023.

How much traffic does East Fk Lolo CR over Lolo Creek carry?

About 50 vehicles per day (latest count).

How long is East Fk Lolo CR over Lolo Creek?

The structure is 49 ft (14.8 m) long with a longest span of 23 ft (7 m) and a deck 16 ft wide.

Who owns East Fk Lolo CR over Lolo Creek?

It is owned by the U.S. Forest Service.