US Bridges

S 273 over Warm Springs Creek

Fair

Deer Lodge County, Montana · 2M NE Anaconda · Structure no. S00273000+07001

Built
1988
37 years old
Condition
Fair
inspected July 2023
Type
Slab
Concrete Continuous
Length
70 ft
3 main spans
Daily traffic
1,000
2023 count
Owner
State
State Highway Agency

About this bridge

S 273 over Warm Springs Creek is a concrete continuous slab carrying S 273 over Warm Springs Creek in Deer Lodge County, Montana. It was built in 1988, so it is 37 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 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 1,000 vehicles a day, projected to reach 1,050 by 2043. The structure is 70 ft (21.3 m) long and 36 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

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CarriesS 273
CrossesWarm Springs Creek
Location2M NE Anaconda
RouteState Highway 273
CountyDeer Lodge County
StateMontana
Coordinates46.13764, -112.89171
Functional classRural Major 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45.7 US tons
Inventory rating35.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length70 ft (21.3 m)
Longest span27 ft (8.2 m)
Deck width36 ft (11.1 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2023)
Projected traffic1,050 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 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 S 273 over Warm Springs Creek built?

It was built in 1988, making it 37 years old in 2025.

What condition is S 273 over Warm Springs Creek 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 July 2023.

How much traffic does S 273 over Warm Springs Creek carry?

About 1,000 vehicles per day (2023 count).

How long is S 273 over Warm Springs Creek?

The structure is 70 ft (21.3 m) long with a longest span of 27 ft (8.2 m) and a deck 36 ft wide.

Who owns S 273 over Warm Springs Creek?

It is owned by the State Highway Agency.