US Bridges

Lapalco Blvd over Segnette Bayou

GoodPosted for load

Jefferson Parish, Louisiana · 0.9 Mi. S. of US 90 B · Structure no. 022629539900931

Built
1977
48 years old
Condition
Good
inspected September 2023
Type
Girder and Floorbeam System
Steel Continuous
Length
2,467 ft
3 main spans
Daily traffic
2,000
1979 count
Owner
County
County Highway Agency

About this bridge

Lapalco Blvd over Segnette Bayou is a steel continuous girder and floorbeam system carrying Lapalco Blvd over Segnette Bayou in Jefferson Parish, Louisiana. It was built in 1977, so it is 48 years old, older 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. Its operating status is: posted for load restriction.

It carries about 2,000 vehicles a day, projected to reach 2,200 by 1999. The structure is 2,467 ft (751.9 m) long and 33 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesLapalco Blvd
CrossesSegnette Bayou
Location0.9 Mi. S. of US 90 B
RouteCounty Highway 0
CountyJefferson Parish
StateLouisiana
Coordinates29.89536, -90.16164
Functional classUrban Local

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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusPosted for load 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 rating40.3 US tons
Inventory rating31.1 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+25 approach)
Design loadHS 20
Structure length2,467 ft (751.9 m)
Longest span171 ft (52.1 m)
Deck width33 ft (10.2 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,000 (1979)
Projected traffic2,200 by 1999
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway and waterway
Detour if closed98.8 mi (159 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—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Lapalco Blvd over Segnette Bayou built?

It was built in 1977, making it 48 years old in 2025.

What condition is Lapalco Blvd over Segnette 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 September 2023.

How much traffic does Lapalco Blvd over Segnette Bayou carry?

About 2,000 vehicles per day (1979 count).

How long is Lapalco Blvd over Segnette Bayou?

The structure is 2,467 ft (751.9 m) long with a longest span of 171 ft (52.1 m) and a deck 33 ft wide.

Who owns Lapalco Blvd over Segnette Bayou?

It is owned by the County Highway Agency.