US Bridges

ST Vincent RD over Saint Vincent Bayou

Good

Assumption Parish, Louisiana · 0.4 MI S of LA 402 · Structure no. 610400000610367

Built
2015
10 years old
Condition
Good
inspected November 2024
Type
Slab
Concrete
Length
22 ft
1 main span
Daily traffic
96
2020 count
Owner
County
County Highway Agency

About this bridge

ST Vincent RD over Saint Vincent Bayou is a concrete slab carrying ST Vincent RD over Saint Vincent Bayou in Assumption Parish, Louisiana. It was built in 2015, so it is 10 years old, younger than the Louisiana average of 43 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 96 vehicles a day, projected to reach 105 by 2040. The structure is 22 ft (6.7 m) long and 27 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesST Vincent RD
CrossesSaint Vincent Bayou
Location0.4 MI S of LA 402
RouteCounty Highway 0
Coordinates29.95873, -91.07212
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.9 US tons
Inventory rating53.2 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadGreater than HL 93
Structure length22 ft (6.7 m)
Longest span22 ft (6.7 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic96 (2020)
Projected traffic105 by 2040
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 ST Vincent RD over Saint Vincent Bayou built?

It was built in 2015, making it 10 years old in 2025.

What condition is ST Vincent RD over Saint Vincent Bayou 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 ST Vincent RD over Saint Vincent Bayou carry?

About 96 vehicles per day (2020 count).

How long is ST Vincent RD over Saint Vincent Bayou?

The structure is 22 ft (6.7 m) long with a longest span of 22 ft (6.7 m) and a deck 27 ft wide.

Who owns ST Vincent RD over Saint Vincent Bayou?

It is owned by the County Highway Agency.