US Bridges

LA0933 over Henderson Bayou

PoorPosted for load

Ascension Parish, Louisiana · 0.9 M E of LA 44 · Structure no. 610308031800901

Built
1969
56 years old
Condition
Poor
inspected October 2024
Type
Slab
Concrete
Length
38 ft
2 main spans
Daily traffic
6,131
2021 count
Owner
State
State Highway Agency

About this bridge

LA0933 over Henderson Bayou is a concrete slab carrying LA0933 over Henderson Bayou in Ascension Parish, Louisiana. It was built in 1969, so it is 56 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 6,131 vehicles a day, roughly 11% of them trucks, projected to reach 6,744 by 2041. The structure is 38 ft (11.6 m) long and 27 ft wide.

CarriesLA0933
CrossesHenderson Bayou
Location0.9 M E of LA 44
RouteState Highway 933
Coordinates30.31384, -90.90741
Functional classUrban Collector

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
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating15.8 US tons
Inventory rating12.1 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 (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,131 (2021)
Projected traffic6,744 by 2041
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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$234,000
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0933 over Henderson Bayou built?

It was built in 1969, making it 56 years old in 2025.

What condition is LA0933 over Henderson 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 October 2024.

How much traffic does LA0933 over Henderson Bayou carry?

About 6,131 vehicles per day (2021 count), of which roughly 11% are trucks.

How long is LA0933 over Henderson 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 LA0933 over Henderson Bayou?

It is owned by the State Highway Agency.