US Bridges

W Fork RD over Limestone Creek 051

Good

Stillwater County, Montana · 3M NW Nye · Structure no. L48201002+00001

Built
2004
21 years old
Condition
Good
inspected November 2024
Type
Tee Beam
Prestressed Concrete
Length
46 ft
1 main span
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

W Fork RD over Limestone Creek 051 is a prestressed concrete tee beam carrying W Fork RD over Limestone Creek 051 in Stillwater County, Montana. It was built in 2004, so it is 21 years old, younger than the Montana average of 47 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 46 ft (14.1 m) long and 24 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesW Fork RD
CrossesLimestone Creek 051
Location3M NW Nye
RouteCounty Highway 48201
StateMontana
Coordinates45.45513, -109.84767
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum 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 length46 ft (14.1 m)
Longest span42 ft (12.7 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 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 closed123.7 mi (199 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 W Fork RD over Limestone Creek 051 built?

It was built in 2004, making it 21 years old in 2025.

What condition is W Fork RD over Limestone Creek 051 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2024.

How much traffic does W Fork RD over Limestone Creek 051 carry?

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

How long is W Fork RD over Limestone Creek 051?

The structure is 46 ft (14.1 m) long with a longest span of 42 ft (12.7 m) and a deck 24 ft wide.

Who owns W Fork RD over Limestone Creek 051?

It is owned by the County Highway Agency.