US Bridges

LA3066-S over Plaquemine Bayou/Ind Vil

Fair

Iberville Parish, Louisiana · LA3066-S · Structure no. 612402300106531

Built
1971
54 years old
Condition
Fair
inspected March 2023
Type
Movable - Swing
Steel
Length
302 ft
1 main span
Daily traffic
2,287
2021 count
Owner
State
State Highway Agency

About this bridge

LA3066-S over Plaquemine Bayou/Ind Vil is a steel movable - swing carrying LA3066-S over Plaquemine Bayou/Ind Vil in Iberville Parish, Louisiana. It was built in 1971, so it is 54 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.

It carries about 2,287 vehicles a day, roughly 14% of them trucks, projected to reach 2,515 by 2041. The structure is 302 ft (92 m) long and 32 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesLA3066-S
CrossesPlaquemine Bayou/Ind Vil
LocationLA3066-S
RouteState Highway 3066
CountyIberville Parish
StateLouisiana
Coordinates30.2574, -91.31282
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
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 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
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65 US tons
Inventory rating39 US tons

Structure

Structure typeMovable - Swing
MaterialSteel
DeckOpen grating
Main spans1 (+8 approach)
Design loadHS 20
Structure length302 ft (92 m)
Longest span0 ft (0 m)
Deck width32 ft (9.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,287 (2021)
Projected traffic2,515 by 2041
Trucks14%
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 proposedNone recorded
Estimated improvement cost—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was LA3066-S over Plaquemine Bayou/Ind Vil built?

It was built in 1971, making it 54 years old in 2025.

What condition is LA3066-S over Plaquemine Bayou/Ind Vil 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 LA3066-S over Plaquemine Bayou/Ind Vil carry?

About 2,287 vehicles per day (2021 count), of which roughly 14% are trucks.

How long is LA3066-S over Plaquemine Bayou/Ind Vil?

The structure is 302 ft (92 m) long and a deck 32 ft wide.

Who owns LA3066-S over Plaquemine Bayou/Ind Vil?

It is owned by the State Highway Agency.