US Bridges

Dumesnil RD over Vacherie Canal

Fair

St. Mary Parish, Louisiana · 0.52 MI N of LA 83 · Structure no. 035129506913691

Built
1972
53 years old
Condition
Fair
inspected April 2023
Type
Slab
Concrete
Length
38 ft
2 main spans
Daily traffic
50
2022 count
Owner
County
County Highway Agency

About this bridge

Dumesnil RD over Vacherie Canal is a concrete slab carrying Dumesnil RD over Vacherie Canal in St. Mary Parish, Louisiana. It was built in 1972, so it is 53 years old, older than the Louisiana average of 43 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 50 vehicles a day, projected to reach 55 by 2042. The structure is 38 ft (11.6 m) long and 31 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesDumesnil RD
CrossesVacherie Canal
Location0.52 MI N of LA 83
RouteCounty Highway 0
CountySt. Mary Parish
StateLouisiana
Coordinates29.84342, -91.61454
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to 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 rating42.9 US tons
Inventory rating33.2 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length38 ft (11.6 m)
Longest span19 ft (5.8 m)
Deck width31 ft (9.5 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2022)
Projected traffic55 by 2042
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 Dumesnil RD over Vacherie Canal built?

It was built in 1972, making it 53 years old in 2025.

What condition is Dumesnil RD over Vacherie Canal 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 April 2023.

How much traffic does Dumesnil RD over Vacherie Canal carry?

About 50 vehicles per day (2022 count).

How long is Dumesnil RD over Vacherie Canal?

The structure is 38 ft (11.6 m) long with a longest span of 19 ft (5.8 m) and a deck 31 ft wide.

Who owns Dumesnil RD over Vacherie Canal?

It is owned by the County Highway Agency.