US Bridges

LA0384 over Intracoastal Waterway

PoorPosted for load

Calcasieu Parish, Louisiana · 6.5 MI N of LA 1144 · Structure no. 071003820402351

Built
1979
46 years old
Condition
Poor
inspected June 2024
Type
Movable - Swing
Steel
Length
635 ft
1 main span
Daily traffic
1,056
2023 count
Owner
State
State Highway Agency

About this bridge

LA0384 over Intracoastal Waterway is a steel movable - swing carrying LA0384 over Intracoastal Waterway in Calcasieu 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 poor condition with a lowest component rating of 4 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 1,056 vehicles a day, roughly 17% of them trucks, projected to reach 1,161 by 2043. The structure is 635 ft (193.5 m) long and 27 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesLA0384
CrossesIntracoastal Waterway
Location6.5 MI N of LA 1144
RouteState Highway 384
CountyCalcasieu Parish
StateLouisiana
Coordinates30.08184, -93.28598
Functional classRural Major 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating38 US tons
Inventory rating32 US tons

Structure

Structure typeMovable - Swing
MaterialSteel
DeckConcrete, precast panels
Main spans1 (+23 approach)
Design loadHS 20
Structure length635 ft (193.5 m)
Longest span165 ft (50.3 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,056 (2023)
Projected traffic1,161 by 2043
Trucks17%
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$2.6 million
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was LA0384 over Intracoastal Waterway built?

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

What condition is LA0384 over Intracoastal Waterway 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 June 2024.

How much traffic does LA0384 over Intracoastal Waterway carry?

About 1,056 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is LA0384 over Intracoastal Waterway?

The structure is 635 ft (193.5 m) long with a longest span of 165 ft (50.3 m) and a deck 27 ft wide.

Who owns LA0384 over Intracoastal Waterway?

It is owned by the State Highway Agency.