US Bridges

Section RD over Bayou Poydras

Poor

West Baton Rouge Parish, Louisiana · 62 Ft E LA 413 · Structure no. 616130324912451

Built
1973
52 years old
Condition
Poor
inspected November 2024
Type
Slab
Concrete
Length
32 ft
4 main spans
Daily traffic
500
2020 count
Owner
County
County Highway Agency

About this bridge

Section RD over Bayou Poydras is a concrete slab carrying Section RD over Bayou Poydras in West Baton Rouge Parish, Louisiana. It was built in 1973, so it is 52 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 4 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.

It carries about 500 vehicles a day, projected to reach 550 by 2040. The structure is 32 ft (9.8 m) long and 23 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSection RD
CrossesBayou Poydras
Location62 Ft E LA 413
RouteCounty Highway 0
CountyWest Baton Rouge Parish
StateLouisiana
Coordinates30.54033, -91.40761
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28.5 US tons
Inventory rating22.2 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans4
Design loadHS 20
Structure length32 ft (9.8 m)
Longest span19 ft (5.8 m)
Deck width23 ft (7 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2020)
Projected traffic550 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$144,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Section RD over Bayou Poydras built?

It was built in 1973, making it 52 years old in 2025.

What condition is Section RD over Bayou Poydras 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 November 2024.

How much traffic does Section RD over Bayou Poydras carry?

About 500 vehicles per day (2020 count).

How long is Section RD over Bayou Poydras?

The structure is 32 ft (9.8 m) long with a longest span of 19 ft (5.8 m) and a deck 23 ft wide.

Who owns Section RD over Bayou Poydras?

It is owned by the County Highway Agency.