US Bridges

Mt Evans Way over Warm Springs Creek 016

PoorPosted for load

Deer Lodge County, Montana · Warm Springs · Structure no. L12163000+01001

Built
1912
113 years old
Condition
Poor
inspected October 2023
Type
Slab
Concrete
Length
28 ft
1 main span
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

Mt Evans Way over Warm Springs Creek 016 is a concrete slab carrying Mt Evans Way over Warm Springs Creek 016 in Deer Lodge County, Montana. It was built in 1912, so it is 113 years old, older than the Montana average of 47 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 28 ft (8.4 m) long and 20 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMt Evans Way
CrossesWarm Springs Creek 016
LocationWarm Springs
RouteCounty Highway 12163
StateMontana
Coordinates46.18046, -112.78599
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating6 US tons
Inventory rating5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length28 ft (8.4 m)
Longest span28 ft (8.4 m)
Deck width20 ft (6.1 m)
Roadway width18 ft (5.4 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 closed1.2 mi (2 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$114,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Mt Evans Way over Warm Springs Creek 016 built?

It was built in 1912, making it 113 years old in 2025.

What condition is Mt Evans Way over Warm Springs Creek 016 in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2023.

How much traffic does Mt Evans Way over Warm Springs Creek 016 carry?

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

How long is Mt Evans Way over Warm Springs Creek 016?

The structure is 28 ft (8.4 m) long with a longest span of 28 ft (8.4 m) and a deck 20 ft wide.

Who owns Mt Evans Way over Warm Springs Creek 016?

It is owned by the County Highway Agency.