US Bridges

Kootenai River RD over Pipe Creek

Poor

Lincoln County, Montana · 4M N Libby · Structure no. S00260003+05351

Built
1987
38 years old
Condition
Poor
inspected October 2024
Type
Tee Beam
Prestressed Concrete
Length
72 ft
1 main span
Daily traffic
702
2023 count
Owner
State
State Highway Agency

About this bridge

Kootenai River RD over Pipe Creek is a prestressed concrete tee beam carrying Kootenai River RD over Pipe Creek in Lincoln County, Montana. It was built in 1987, so it is 38 years old, younger than the Montana average of 47 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 702 vehicles a day, projected to reach 737 by 2043. The structure is 72 ft (21.9 m) long and 31 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

CarriesKootenai River RD
CrossesPipe Creek
Location4M N Libby
RouteState Highway 260
StateMontana
Coordinates48.42774, -115.59556
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be 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 rating37.1 US tons
Inventory rating28.5 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length72 ft (21.9 m)
Longest span70 ft (21.3 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic702 (2023)
Projected traffic737 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 km)
TollOn a free road
National Highway SystemNo

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 Kootenai River RD over Pipe Creek built?

It was built in 1987, making it 38 years old in 2025.

What condition is Kootenai River RD over Pipe Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2024.

How much traffic does Kootenai River RD over Pipe Creek carry?

About 702 vehicles per day (2023 count).

How long is Kootenai River RD over Pipe Creek?

The structure is 72 ft (21.9 m) long with a longest span of 70 ft (21.3 m) and a deck 31 ft wide.

Who owns Kootenai River RD over Pipe Creek?

It is owned by the State Highway Agency.