US Bridges

Vandalia RD over Vandalia South Canal 011

FairPosted for load

Valley County, Montana · Vandalia · Structure no. L53501002+09001

Built
1991
34 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
72 ft
1 main span
Daily traffic
29
2023 count
Owner
County
County Highway Agency

About this bridge

Vandalia RD over Vandalia South Canal 011 is a steel stringer/multi-beam or girder carrying Vandalia RD over Vandalia South Canal 011 in Valley County, Montana. It was built in 1991, so it is 34 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. Its operating status is: posted for load restriction.

It carries about 29 vehicles a day, roughly 10% of them trucks, projected to reach 30 by 2043. The structure is 72 ft (21.8 m) long and 28 ft wide. If it were closed, the detour would be 18 mi (29 km).

CarriesVandalia RD
CrossesVandalia South Canal 011
LocationVandalia
RouteCounty Highway 53411
StateMontana
Coordinates48.35744, -106.90775
Functional classRural Major Collector

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating47 US tons
Inventory rating36 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length72 ft (21.8 m)
Longest span66 ft (20.1 m)
Deck width28 ft (8.4 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29 (2023)
Projected traffic30 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 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$146,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Vandalia RD over Vandalia South Canal 011 built?

It was built in 1991, making it 34 years old in 2025.

What condition is Vandalia RD over Vandalia South Canal 011 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 November 2024.

How much traffic does Vandalia RD over Vandalia South Canal 011 carry?

About 29 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Vandalia RD over Vandalia South Canal 011?

The structure is 72 ft (21.8 m) long with a longest span of 66 ft (20.1 m) and a deck 28 ft wide.

Who owns Vandalia RD over Vandalia South Canal 011?

It is owned by the County Highway Agency.