US Bridges

Broadhurst RD over Pondera Coulee 013

Fair

Liberty County, Montana · 4M S Tiber Dam · Structure no. L26040001+05001

Built
1977
48 years old
Condition
Fair
inspected December 2023
Type
Channel Beam
Prestressed Concrete
Length
38 ft
1 main span
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

Broadhurst RD over Pondera Coulee 013 is a prestressed concrete channel beam carrying Broadhurst RD over Pondera Coulee 013 in Liberty County, Montana. It was built in 1977, so it is 48 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 6 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 38 ft (11.6 m) long and 26 ft wide. If it were closed, the detour would be 34.2 mi (55 km).

CarriesBroadhurst RD
CrossesPondera Coulee 013
Location4M S Tiber Dam
RouteCounty Highway 26040
StateMontana
Coordinates48.27048, -111.14547
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating60 US tons
Inventory rating37.1 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 15
Structure length38 ft (11.6 m)
Longest span36 ft (11 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2025)
Projected traffic100 by 2040
Trucks3%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed34.2 mi (55 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 Broadhurst RD over Pondera Coulee 013 built?

It was built in 1977, making it 48 years old in 2025.

What condition is Broadhurst RD over Pondera Coulee 013 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 December 2023.

How much traffic does Broadhurst RD over Pondera Coulee 013 carry?

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

How long is Broadhurst RD over Pondera Coulee 013?

The structure is 38 ft (11.6 m) long with a longest span of 36 ft (11 m) and a deck 26 ft wide.

Who owns Broadhurst RD over Pondera Coulee 013?

It is owned by the County Highway Agency.