US Bridges

Red Bridge RD over American Fork Creek 015

Good

Wheatland County, Montana · 6M SE Harlowton · Structure no. L54012004+02001

Built
1993
32 years old
Condition
Good
inspected October 2024
Type
Tee Beam
Prestressed Concrete
Length
67 ft
1 main span
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

Red Bridge RD over American Fork Creek 015 is a prestressed concrete tee beam carrying Red Bridge RD over American Fork Creek 015 in Wheatland County, Montana. It was built in 1993, so it is 32 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 67 ft (20.4 m) long and 26 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesRed Bridge RD
CrossesAmerican Fork Creek 015
Location6M SE Harlowton
RouteCounty Highway 54012
StateMontana
Coordinates46.3732, -109.79629
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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47 US tons
Inventory rating36 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length67 ft (20.4 m)
Longest span65 ft (19.8 m)
Deck width26 ft (8 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 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 Red Bridge RD over American Fork Creek 015 built?

It was built in 1993, making it 32 years old in 2025.

What condition is Red Bridge RD over American Fork Creek 015 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 Red Bridge RD over American Fork Creek 015 carry?

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

How long is Red Bridge RD over American Fork Creek 015?

The structure is 67 ft (20.4 m) long with a longest span of 65 ft (19.8 m) and a deck 26 ft wide.

Who owns Red Bridge RD over American Fork Creek 015?

It is owned by the County Highway Agency.