US Bridges

Braud RD over Black Bayou

PoorPosted for load

Ascension Parish, Louisiana · 1.8 MI N US 61 LA621 · Structure no. 610330177905631

Built
1980
45 years old
Condition
Poor
inspected February 2024
Type
Slab
Concrete
Length
38 ft
2 main spans
Daily traffic
500
2019 count
Owner
County
County Highway Agency

About this bridge

Braud RD over Black Bayou is a concrete slab carrying Braud RD over Black Bayou in Ascension Parish, Louisiana. It was built in 1980, so it is 45 years old, older than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 500 vehicles a day, projected to reach 550 by 2039. The structure is 38 ft (11.6 m) long and 27 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesBraud RD
CrossesBlack Bayou
Location1.8 MI N US 61 LA621
RouteCounty Highway 0
Coordinates30.29825, -90.9387
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating21.1 US tons
Inventory rating14.3 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans2
Design loadH 15
Structure length38 ft (11.6 m)
Longest span19 ft (5.8 m)
Deck width27 ft (8.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2019)
Projected traffic550 by 2039
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 Braud RD over Black Bayou built?

It was built in 1980, making it 45 years old in 2025.

What condition is Braud RD over Black Bayou in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in February 2024.

How much traffic does Braud RD over Black Bayou carry?

About 500 vehicles per day (2019 count).

How long is Braud RD over Black Bayou?

The structure is 38 ft (11.6 m) long with a longest span of 19 ft (5.8 m) and a deck 27 ft wide.

Who owns Braud RD over Black Bayou?

It is owned by the County Highway Agency.