US Bridges

LA0044 over Black Bayou

Good

Ascension Parish, Louisiana · 0.5 MI N of LA 621 · Structure no. 610300000610397

Built
2018
7 years old
Condition
Good
inspected October 2024
Type
Slab
Concrete
Length
100 ft
5 main spans
Daily traffic
17,577
2021 count
Owner
State
State Highway Agency

About this bridge

LA0044 over Black Bayou is a concrete slab carrying LA0044 over Black Bayou in Ascension Parish, Louisiana. It was built in 2018, so it is 7 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 17,577 vehicles a day, roughly 10% of them trucks, projected to reach 19,334 by 2041. The structure is 100 ft (30.5 m) long and 43 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesLA0044
CrossesBlack Bayou
Location0.5 MI N of LA 621
RouteState Highway 44
Coordinates30.27695, -90.92132
Functional classUrban Other Principal Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66 US tons
Inventory rating50.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadGreater than HL 93
Structure length100 ft (30.5 m)
Longest span20 ft (6.1 m)
Deck width43 ft (13 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,577 (2021)
Projected traffic19,334 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 LA0044 over Black Bayou built?

It was built in 2018, making it 7 years old in 2025.

What condition is LA0044 over Black 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 October 2024.

How much traffic does LA0044 over Black Bayou carry?

About 17,577 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is LA0044 over Black Bayou?

The structure is 100 ft (30.5 m) long with a longest span of 20 ft (6.1 m) and a deck 43 ft wide.

Who owns LA0044 over Black Bayou?

It is owned by the State Highway Agency.