US Bridges

Wisdom RD over Bayou Plaquemine Bruly

Fair

St. Landry Parish, Louisiana · 0.1 MI E of Grapevine RD · Structure no. 034930316920801

Built
1987
38 years old
Condition
Fair
inspected January 2023
Type
Slab
Concrete
Length
76 ft
4 main spans
Daily traffic
250
2020 count
Owner
County
County Highway Agency

About this bridge

Wisdom RD over Bayou Plaquemine Bruly is a concrete slab carrying Wisdom RD over Bayou Plaquemine Bruly in St. Landry Parish, Louisiana. It was built in 1987, so it is 38 years old, younger 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 250 vehicles a day, projected to reach 275 by 2040. The structure is 76 ft (23.2 m) long and 27 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesWisdom RD
CrossesBayou Plaquemine Bruly
Location0.1 MI E of Grapevine RD
RouteCounty Highway 0
CountySt. Landry Parish
StateLouisiana
Coordinates30.52488, -92.13782
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating26.5 US tons
Inventory rating20.4 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length76 ft (23.2 m)
Longest span19 ft (5.8 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2020)
Projected traffic275 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 Wisdom RD over Bayou Plaquemine Bruly built?

It was built in 1987, making it 38 years old in 2025.

What condition is Wisdom RD over Bayou Plaquemine Bruly 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 January 2023.

How much traffic does Wisdom RD over Bayou Plaquemine Bruly carry?

About 250 vehicles per day (2020 count).

How long is Wisdom RD over Bayou Plaquemine Bruly?

The structure is 76 ft (23.2 m) long with a longest span of 19 ft (5.8 m) and a deck 27 ft wide.

Who owns Wisdom RD over Bayou Plaquemine Bruly?

It is owned by the County Highway Agency.