US Bridges

I0010 over Bayou Plaquemine

Fair

Acadia Parish, Louisiana · 3.9 MI East LA 91 · Structure no. 030104500413661

Built
1961
64 years old, rebuilt 1973
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
552 ft
11 main spans
Daily traffic
58,865
2021 count
Owner
State
State Highway Agency

About this bridge

I0010 over Bayou Plaquemine is a steel stringer/multi-beam or girder carrying I0010 over Bayou Plaquemine in Acadia Parish, Louisiana. It was built in 1961 and reconstructed in 1973, so it is 64 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 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 58,865 vehicles a day, roughly 22% of them trucks, projected to reach 64,751 by 2041. The structure is 552 ft (168.2 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI0010
CrossesBayou Plaquemine
Location3.9 MI East LA 91
RouteInterstate 10
CountyAcadia Parish
StateLouisiana
Coordinates30.23555, -92.3977
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating83 US tons
Inventory rating49.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans11
Design loadHS 20
Structure length552 ft (168.2 m)
Longest span50 ft (15.2 m)
Deck width40 ft (12.2 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic58,865 (2021)
Projected traffic64,751 by 2041
Trucks22%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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$2.3 million
NavigationNo navigation control on waterway

Frequently asked questions

When was I0010 over Bayou Plaquemine built?

It was built in 1961, making it 64 years old in 2025. It was reconstructed in 1973.

What condition is I0010 over Bayou Plaquemine 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 I0010 over Bayou Plaquemine carry?

About 58,865 vehicles per day (2021 count), of which roughly 22% are trucks.

How long is I0010 over Bayou Plaquemine?

The structure is 552 ft (168.2 m) long with a longest span of 50 ft (15.2 m) and a deck 40 ft wide.

Who owns I0010 over Bayou Plaquemine?

It is owned by the State Highway Agency.