US Bridges

Lincoln RD over Int Marias Valley RD 007

Fair

Toole County, Montana · 3M S Shelby · Structure no. L51172000+03001

Built
1976
49 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
287 ft
4 main spans
Daily traffic
100
2025 count
Owner
State
State Highway Agency

About this bridge

Lincoln RD over Int Marias Valley RD 007 is a prestressed concrete stringer/multi-beam or girder carrying Lincoln RD over Int Marias Valley RD 007 in Toole County, Montana. It was built in 1976, so it is 49 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 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 287 ft (87.4 m) long and 32 ft wide.

CarriesLincoln RD
CrossesInt Marias Valley RD 007
Location3M S Shelby
RouteCounty Highway 51172
StateMontana
Coordinates48.45091, -111.88382
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating39 US tons
Inventory rating13 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length287 ft (87.4 m)
Longest span107 ft (32.5 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2025)
Projected traffic100 by 2040
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Lincoln RD over Int Marias Valley RD 007 built?

It was built in 1976, making it 49 years old in 2025.

What condition is Lincoln RD over Int Marias Valley RD 007 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 October 2023.

How much traffic does Lincoln RD over Int Marias Valley RD 007 carry?

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

How long is Lincoln RD over Int Marias Valley RD 007?

The structure is 287 ft (87.4 m) long with a longest span of 107 ft (32.5 m) and a deck 32 ft wide.

Who owns Lincoln RD over Int Marias Valley RD 007?

It is owned by the State Highway Agency.