US Bridges

Frontage Road 011 over Lost Creek 037

Fair

Deer Lodge County, Montana · 3M N Warm Springs · Structure no. L12148003+04001

Built
1931
94 years old, rebuilt 1946
Condition
Fair
inspected January 2024
Type
Tee Beam
Concrete
Length
37 ft
1 main span
Daily traffic
916
2023 count
Owner
State
State Highway Agency

About this bridge

Frontage Road 011 over Lost Creek 037 is a concrete tee beam carrying Frontage Road 011 over Lost Creek 037 in Deer Lodge County, Montana. It was built in 1931 and reconstructed in 1946, so it is 94 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 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 916 vehicles a day, roughly 2% of them trucks, projected to reach 980 by 2043. The structure is 37 ft (11.3 m) long and 39 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesFrontage Road 011
CrossesLost Creek 037
Location3M N Warm Springs
RouteState Highway 81011
CountyDeer Lodge County
StateMontana
Coordinates46.21855, -112.77375
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 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 geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39 US tons
Inventory rating30 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckOther
Main spans1
Design loadH 15
Structure length37 ft (11.3 m)
Longest span35 ft (10.7 m)
Deck width39 ft (11.8 m)
Roadway width36 ft (11.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic916 (2023)
Projected traffic980 by 2043
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Frontage Road 011 over Lost Creek 037 built?

It was built in 1931, making it 94 years old in 2025. It was reconstructed in 1946.

What condition is Frontage Road 011 over Lost Creek 037 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 January 2024.

How much traffic does Frontage Road 011 over Lost Creek 037 carry?

About 916 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is Frontage Road 011 over Lost Creek 037?

The structure is 37 ft (11.3 m) long with a longest span of 35 ft (10.7 m) and a deck 39 ft wide.

Who owns Frontage Road 011 over Lost Creek 037?

It is owned by the State Highway Agency.