US Bridges

0402: Cap Wallace over Elk Creek

Good

Missoula County, Montana · 2 MI S of Sunset Hill RD · Structure no. 000000000L59188

Built
1991
34 years old
Condition
Good
inspected August 2024
Type
Slab
Prestressed Concrete
Length
25 ft
1 main span
Daily traffic
25
2022 count
Owner
Federal
Bureau of Land Management

About this bridge

0402: Cap Wallace over Elk Creek is a prestressed concrete slab carrying 0402: Cap Wallace over Elk Creek in Missoula County, Montana. It was built in 1991, so it is 34 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 25 vehicles a day, projected to reach 35 by 2040. The structure is 25 ft (7.6 m) long and 16 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Carries0402: Cap Wallace
CrossesElk Creek
Location2 MI S of Sunset Hill RD
RouteFederal Lands Road 0
StateMontana
Coordinates46.89368, -113.38601
Functional classRural Local

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating25 US tons
Inventory rating19.3 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span24 ft (7.3 m)
Deck width16 ft (4.9 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2022)
Projected traffic35 by 2040
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerBureau of Land Management
Maintained byBureau of Land Management
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 0402: Cap Wallace over Elk Creek built?

It was built in 1991, making it 34 years old in 2025.

What condition is 0402: Cap Wallace over Elk 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 August 2024.

How much traffic does 0402: Cap Wallace over Elk Creek carry?

About 25 vehicles per day (2022 count).

How long is 0402: Cap Wallace over Elk Creek?

The structure is 25 ft (7.6 m) long with a longest span of 24 ft (7.3 m) and a deck 16 ft wide.

Who owns 0402: Cap Wallace over Elk Creek?

It is owned by the Bureau of Land Management.