US Bridges

Willow Creek RD over Red Rock Coulee 009

Fair

Hill County, Montana · 12M N Havre · Structure no. L21307007+09001

Built
1969
56 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
25 ft
1 main span
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

Willow Creek RD over Red Rock Coulee 009 is a wood or timber stringer/multi-beam or girder carrying Willow Creek RD over Red Rock Coulee 009 in Hill County, Montana. It was built in 1969, so it is 56 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 25 ft (7.5 m) long and 26 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

CarriesWillow Creek RD
CrossesRed Rock Coulee 009
Location12M N Havre
RouteCounty Highway 21307
StateMontana
Coordinates48.71718, -109.72399
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34 US tons
Inventory rating24 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadUnknown
Structure length25 ft (7.5 m)
Longest span23 ft (7 m)
Deck width26 ft (8 m)
Roadway width25 ft (7.7 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 closed14.9 mi (24 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 Willow Creek RD over Red Rock Coulee 009 built?

It was built in 1969, making it 56 years old in 2025.

What condition is Willow Creek RD over Red Rock Coulee 009 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 June 2024.

How much traffic does Willow Creek RD over Red Rock Coulee 009 carry?

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

How long is Willow Creek RD over Red Rock Coulee 009?

The structure is 25 ft (7.5 m) long with a longest span of 23 ft (7 m) and a deck 26 ft wide.

Who owns Willow Creek RD over Red Rock Coulee 009?

It is owned by the County Highway Agency.