US Bridges

LA0001 over B.Plaquemine

Fair

Iberville Parish, Louisiana · 0.37 M SE of LA 1&LA 77 · Structure no. 612400500614251

Built
1979
46 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
1,458 ft
20 main spans
Daily traffic
10,350
2016 count
Owner
State
State Highway Agency

About this bridge

LA0001 over B.Plaquemine is a prestressed concrete stringer/multi-beam or girder carrying LA0001 over B.Plaquemine in Iberville Parish, Louisiana. It was built in 1979, so it is 46 years old, older than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 10,350 vehicles a day, roughly 9% of them trucks, projected to reach 11,385 by 2036. The structure is 1,458 ft (444.4 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesLA0001
CrossesB.Plaquemine
Location0.37 M SE of LA 1&LA 77
RouteState Highway 1
CountyIberville Parish
StateLouisiana
Coordinates30.29166, -91.23501
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating87 US tons
Inventory rating39 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans20
Design loadHS 20
Structure length1,458 ft (444.4 m)
Longest span94 ft (28.7 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,350 (2016)
Projected traffic11,385 by 2036
Trucks9%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 LA0001 over B.Plaquemine built?

It was built in 1979, making it 46 years old in 2025.

What condition is LA0001 over B.Plaquemine in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2024.

How much traffic does LA0001 over B.Plaquemine carry?

About 10,350 vehicles per day (2016 count), of which roughly 9% are trucks.

How long is LA0001 over B.Plaquemine?

The structure is 1,458 ft (444.4 m) long with a longest span of 94 ft (28.7 m) and a deck 43 ft wide.

Who owns LA0001 over B.Plaquemine?

It is owned by the State Highway Agency.