US Bridges

Barr Creek RD over Willow Creek 026

Good

Lewis and Clark County, Montana · 8M NW Augusta · Structure no. L25421002+09001

Built
1991
34 years old
Condition
Good
inspected October 2024
Type
Slab
Concrete Continuous
Length
60 ft
3 main spans
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

Barr Creek RD over Willow Creek 026 is a concrete continuous slab carrying Barr Creek RD over Willow Creek 026 in Lewis and Clark 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 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 60 ft (18.3 m) long and 26 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesBarr Creek RD
CrossesWillow Creek 026
Location8M NW Augusta
RouteCounty Highway 25421
StateMontana
Coordinates47.51622, -112.51825
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 rating36.8 US tons
Inventory rating28.2 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length60 ft (18.3 m)
Longest span23 ft (7 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 structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 Barr Creek RD over Willow Creek 026 built?

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

What condition is Barr Creek RD over Willow Creek 026 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 October 2024.

How much traffic does Barr Creek RD over Willow Creek 026 carry?

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

How long is Barr Creek RD over Willow Creek 026?

The structure is 60 ft (18.3 m) long with a longest span of 23 ft (7 m) and a deck 26 ft wide.

Who owns Barr Creek RD over Willow Creek 026?

It is owned by the County Highway Agency.