US Bridges

Foster RD over American Fork Creek 007

Fair

Wheatland County, Montana · 5M SE Harlowton · Structure no. L54015008+00001

Built
1982
43 years old
Condition
Fair
inspected September 2024
Type
Channel Beam
Prestressed Concrete
Length
33 ft
1 main span
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

Foster RD over American Fork Creek 007 is a prestressed concrete channel beam carrying Foster RD over American Fork Creek 007 in Wheatland County, Montana. It was built in 1982, so it is 43 years old, younger 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 33 ft (10.1 m) long and 19 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesFoster RD
CrossesAmerican Fork Creek 007
Location5M SE Harlowton
RouteCounty Highway 54011
StateMontana
Coordinates46.39261, -109.75829
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
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
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating36 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length33 ft (10.1 m)
Longest span31 ft (9.4 m)
Deck width19 ft (5.8 m)
Roadway width17 ft (5.3 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 closed9.9 mi (16 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 Foster RD over American Fork Creek 007 built?

It was built in 1982, making it 43 years old in 2025.

What condition is Foster RD over American Fork Creek 007 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 2024.

How much traffic does Foster RD over American Fork Creek 007 carry?

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

How long is Foster RD over American Fork Creek 007?

The structure is 33 ft (10.1 m) long with a longest span of 31 ft (9.4 m) and a deck 19 ft wide.

Who owns Foster RD over American Fork Creek 007?

It is owned by the County Highway Agency.