US Bridges

LA0370 over Bayou Mallet

Fair

Acadia Parish, Louisiana · 1.84M East of LA 13 · Structure no. 030103880201841

Built
1993
32 years old
Condition
Fair
inspected November 2023
Type
Culvert
Steel
Length
39 ft
3 main spans
Daily traffic
1,145
2021 count
Owner
State
State Highway Agency

About this bridge

LA0370 over Bayou Mallet is a steel culvert carrying LA0370 over Bayou Mallet in Acadia Parish, Louisiana. It was built in 1993, so it is 32 years old, younger 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 5 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 1,145 vehicles a day, roughly 13% of them trucks, projected to reach 1,259 by 2041. The structure is 39 ft (11.9 m) long and 76 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesLA0370
CrossesBayou Mallet
Location1.84M East of LA 13
RouteState Highway 370
CountyAcadia Parish
StateLouisiana
Coordinates30.42153, -92.3667
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: 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 rating107.1 US tons
Inventory rating82.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadHS 20
Structure length39 ft (11.9 m)
Longest span7 ft (2.1 m)
Deck width76 ft (23.3 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,145 (2021)
Projected traffic1,259 by 2041
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
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$171,000
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0370 over Bayou Mallet built?

It was built in 1993, making it 32 years old in 2025.

What condition is LA0370 over Bayou Mallet 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 November 2023.

How much traffic does LA0370 over Bayou Mallet carry?

About 1,145 vehicles per day (2021 count), of which roughly 13% are trucks.

How long is LA0370 over Bayou Mallet?

The structure is 39 ft (11.9 m) long with a longest span of 7 ft (2.1 m) and a deck 76 ft wide.

Who owns LA0370 over Bayou Mallet?

It is owned by the State Highway Agency.