US Bridges

Race Track RD over Int Racetrack-I 90 001

Fair

Powell County, Montana · 8M S Deer Lodge · Structure no. L39188000+01501

Built
1978
47 years old
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
280 ft
4 main spans
Daily traffic
100
2025 count
Owner
State
State Highway Agency

About this bridge

Race Track RD over Int Racetrack-I 90 001 is a prestressed concrete stringer/multi-beam or girder carrying Race Track RD over Int Racetrack-I 90 001 in Powell County, Montana. It was built in 1978, so it is 47 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 280 ft (85.3 m) long and 34 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesRace Track RD
CrossesInt Racetrack-I 90 001
Location8M S Deer Lodge
RouteCounty Highway 39188
CountyPowell County
StateMontana
Coordinates46.26995, -112.74835
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating48 US tons
Inventory rating30 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length280 ft (85.3 m)
Longest span90 ft (27.4 m)
Deck width34 ft (10.4 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2025)
Projected traffic100 by 2040
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Race Track RD over Int Racetrack-I 90 001 built?

It was built in 1978, making it 47 years old in 2025.

What condition is Race Track RD over Int Racetrack-I 90 001 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 February 2023.

How much traffic does Race Track RD over Int Racetrack-I 90 001 carry?

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

How long is Race Track RD over Int Racetrack-I 90 001?

The structure is 280 ft (85.3 m) long with a longest span of 90 ft (27.4 m) and a deck 34 ft wide.

Who owns Race Track RD over Int Racetrack-I 90 001?

It is owned by the State Highway Agency.