US Bridges

Winchester RD over Elk Creek 057

Fair

Sanders County, Montana · 2M S Heron · Structure no. L45056001+02001

Built
1992
33 years old
Condition
Fair
inspected June 2024
Type
Tee Beam
Prestressed Concrete
Length
60 ft
1 main span
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

Winchester RD over Elk Creek 057 is a prestressed concrete tee beam carrying Winchester RD over Elk Creek 057 in Sanders County, Montana. It was built in 1992, so it is 33 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 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 60 ft (18.4 m) long and 18 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesWinchester RD
CrossesElk Creek 057
Location2M S Heron
RouteCounty Highway 45056
StateMontana
Coordinates48.03155, -115.95247
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating36 US tons
Inventory rating36 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length60 ft (18.4 m)
Longest span59 ft (18 m)
Deck width18 ft (5.5 m)
Roadway width15 ft (4.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2025)
Projected traffic100 by 2040
Trucks3%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 Winchester RD over Elk Creek 057 built?

It was built in 1992, making it 33 years old in 2025.

What condition is Winchester RD over Elk Creek 057 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 June 2024.

How much traffic does Winchester RD over Elk Creek 057 carry?

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

How long is Winchester RD over Elk Creek 057?

The structure is 60 ft (18.4 m) long with a longest span of 59 ft (18 m) and a deck 18 ft wide.

Who owns Winchester RD over Elk Creek 057?

It is owned by the County Highway Agency.