US Bridges

Enterprise Blvd over Bayou Plaquemine

Good

Iberville Parish, Louisiana · 0.3 MI S/E of LA 77 · Structure no. 612430162911531

Built
2005
20 years old
Condition
Good
inspected December 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
266 ft
4 main spans
Daily traffic
3,094
2022 count
Owner
County
County Highway Agency

About this bridge

Enterprise Blvd over Bayou Plaquemine is a prestressed concrete stringer/multi-beam or girder carrying Enterprise Blvd over Bayou Plaquemine in Iberville 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,094 vehicles a day, projected to reach 3,403 by 2042. The structure is 266 ft (81.1 m) long and 43 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesEnterprise Blvd
CrossesBayou Plaquemine
Location0.3 MI S/E of LA 77
RouteCounty Highway 0
CountyIberville Parish
StateLouisiana
Coordinates30.27286, -91.25972
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating44 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length266 ft (81.1 m)
Longest span46 ft (14 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,094 (2022)
Projected traffic3,403 by 2042
Trucks—
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

OwnerCounty Highway Agency
Maintained byCounty 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 Enterprise Blvd over Bayou Plaquemine built?

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

What condition is Enterprise Blvd over Bayou Plaquemine in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in December 2024.

How much traffic does Enterprise Blvd over Bayou Plaquemine carry?

About 3,094 vehicles per day (2022 count).

How long is Enterprise Blvd over Bayou Plaquemine?

The structure is 266 ft (81.1 m) long with a longest span of 46 ft (14 m) and a deck 43 ft wide.

Who owns Enterprise Blvd over Bayou Plaquemine?

It is owned by the County Highway Agency.