US Bridges

Capp Lane over Pipestone Creek

Fair

Jefferson County, Montana · 1M W Whitehall · Structure no. 000000000007054

Built
1930
95 years old
Condition
Fair
inspected September 2023
Type
Slab
Concrete
Length
25 ft
1 main span
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

Capp Lane over Pipestone Creek is a concrete slab carrying Capp Lane over Pipestone Creek in Jefferson County, Montana. It was built in 1930, so it is 95 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 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 25 ft (7.5 m) long and 22 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesCapp Lane
CrossesPipestone Creek
Location1M W Whitehall
RouteCounty Highway 22516
CountyJefferson County
StateMontana
Coordinates45.87012, -112.11439
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionSeptember 2023
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
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating36 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length25 ft (7.5 m)
Longest span22 ft (6.6 m)
Deck width22 ft (6.7 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2025)
Projected traffic100 by 2040
Trucks3%
Lanes on structure2
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Capp Lane over Pipestone Creek built?

It was built in 1930, making it 95 years old in 2025.

What condition is Capp Lane over Pipestone 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 September 2023.

How much traffic does Capp Lane over Pipestone Creek carry?

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

How long is Capp Lane over Pipestone Creek?

The structure is 25 ft (7.5 m) long with a longest span of 22 ft (6.6 m) and a deck 22 ft wide.

Who owns Capp Lane over Pipestone Creek?

It is owned by the County Highway Agency.