US Bridges

LA0319 over Intracoastal Canal

Fair

St. Mary Parish, Louisiana · 1.6 MI South of LA 83 · Structure no. 035102390106491

Built
2005
20 years old
Condition
Fair
inspected March 2024
Type
Movable - Bascule
Steel
Length
5,513 ft
2 main spans
Daily traffic
914
2021 count
Owner
State
State Highway Agency

About this bridge

LA0319 over Intracoastal Canal is a steel movable - bascule carrying LA0319 over Intracoastal Canal in St. Mary Parish, Louisiana. It was built in 2005, so it is 20 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 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 914 vehicles a day, roughly 12% of them trucks, projected to reach 1,005 by 2041. The structure is 5,513 ft (1,680.4 m) long and 40 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesLA0319
CrossesIntracoastal Canal
Location1.6 MI South of LA 83
RouteState Highway 319
CountySt. Mary Parish
StateLouisiana
Coordinates29.76504, -91.7887
Functional classRural Minor 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating25 US tons
Inventory rating19.3 US tons

Structure

Structure typeMovable - Bascule
MaterialSteel
DeckOpen grating
Main spans2 (+39 approach)
Design loadHS 20
Structure length5,513 ft (1,680.4 m)
Longest span276 ft (84.1 m)
Deck width40 ft (12.2 m)
Roadway width37 ft (11.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic914 (2021)
Projected traffic1,005 by 2041
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was LA0319 over Intracoastal Canal built?

It was built in 2005, making it 20 years old in 2025.

What condition is LA0319 over Intracoastal Canal 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 March 2024.

How much traffic does LA0319 over Intracoastal Canal carry?

About 914 vehicles per day (2021 count), of which roughly 12% are trucks.

How long is LA0319 over Intracoastal Canal?

The structure is 5,513 ft (1,680.4 m) long with a longest span of 276 ft (84.1 m) and a deck 40 ft wide.

Who owns LA0319 over Intracoastal Canal?

It is owned by the State Highway Agency.