US Bridges

LA0330 over Bayou Tigre

FairPosted for load

Vermilion Parish, Louisiana · 4.25 MI N. of LA 685 · Structure no. 035703970304251

Built
1960
65 years old
Condition
Fair
inspected March 2023
Type
Movable - Swing
Steel
Length
323 ft
1 main span
Daily traffic
1,523
2021 count
Owner
State
State Highway Agency

About this bridge

LA0330 over Bayou Tigre is a steel movable - swing carrying LA0330 over Bayou Tigre in Vermilion Parish, Louisiana. It was built in 1960, so it is 65 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 1,523 vehicles a day, roughly 13% of them trucks, projected to reach 1,675 by 2041. The structure is 323 ft (98.5 m) long and 19 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesLA0330
CrossesBayou Tigre
Location4.25 MI N. of LA 685
RouteState Highway 330
CountyVermilion Parish
StateLouisiana
Coordinates29.91709, -91.9987
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating11.8 US tons
Inventory rating9.3 US tons

Structure

Structure typeMovable - Swing
MaterialSteel
DeckOpen grating
Main spans1 (+8 approach)
Design loadH 15
Structure length323 ft (98.5 m)
Longest span163 ft (49.7 m)
Deck width19 ft (5.9 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deck14 ft (4.2 m)

Traffic and service

Average daily traffic1,523 (2021)
Projected traffic1,675 by 2041
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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$1.4 million
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was LA0330 over Bayou Tigre built?

It was built in 1960, making it 65 years old in 2025.

What condition is LA0330 over Bayou Tigre 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 2023.

How much traffic does LA0330 over Bayou Tigre carry?

About 1,523 vehicles per day (2021 count), of which roughly 13% are trucks.

How long is LA0330 over Bayou Tigre?

The structure is 323 ft (98.5 m) long with a longest span of 163 ft (49.7 m) and a deck 19 ft wide.

Who owns LA0330 over Bayou Tigre?

It is owned by the State Highway Agency.