US Bridges

Mcvey-Mcalpine RD over Int Mcvey CO Road 006

Good

Toole County, Montana · 3M SE Sweetgrass · Structure no. L51008004+03001

Built
1977
48 years old
Condition
Good
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
258 ft
4 main spans
Daily traffic
22
2023 count
Owner
State
State Highway Agency

About this bridge

Mcvey-Mcalpine RD over Int Mcvey CO Road 006 is a prestressed concrete stringer/multi-beam or girder carrying Mcvey-Mcalpine RD over Int Mcvey CO Road 006 in Toole County, Montana. It was built in 1977, so it is 48 years old, older 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 22 vehicles a day, roughly 3% of them trucks, projected to reach 23 by 2043. The structure is 258 ft (78.6 m) long and 32 ft wide.

CarriesMcvey-Mcalpine RD
CrossesInt Mcvey CO Road 006
Location3M SE Sweetgrass
RouteCounty Highway 51008
StateMontana
Coordinates48.94305, -111.93216
Functional classRural Local

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.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52 US tons
Inventory rating28 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length258 ft (78.6 m)
Longest span87 ft (26.4 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22 (2023)
Projected traffic23 by 2043
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 Mcvey-Mcalpine RD over Int Mcvey CO Road 006 built?

It was built in 1977, making it 48 years old in 2025.

What condition is Mcvey-Mcalpine RD over Int Mcvey CO Road 006 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 May 2024.

How much traffic does Mcvey-Mcalpine RD over Int Mcvey CO Road 006 carry?

About 22 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Mcvey-Mcalpine RD over Int Mcvey CO Road 006?

The structure is 258 ft (78.6 m) long with a longest span of 87 ft (26.4 m) and a deck 32 ft wide.

Who owns Mcvey-Mcalpine RD over Int Mcvey CO Road 006?

It is owned by the State Highway Agency.