US Bridges

LA0070 over Avoca Island Cutoff

Fair

Assumption Parish, Louisiana · 5.7 MI N LA 1016-1 · Structure no. 610402320109601

Built
1988
37 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
145 ft
7 main spans
Daily traffic
6,787
2023 count
Owner
State
State Highway Agency

About this bridge

LA0070 over Avoca Island Cutoff is a steel stringer/multi-beam or girder carrying LA0070 over Avoca Island Cutoff in Assumption Parish, Louisiana. It was built in 1988, so it is 37 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 6,787 vehicles a day, roughly 18% of them trucks, projected to reach 7,465 by 2043. The structure is 145 ft (44.2 m) long and 52 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesLA0070
CrossesAvoca Island Cutoff
Location5.7 MI N LA 1016-1
RouteState Highway 70
Coordinates29.99048, -91.19601
Functional classRural Minor Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

MaterialSteel
DeckOpen grating
Main spans7
Design loadHS 20
Structure length145 ft (44.2 m)
Longest span25 ft (7.6 m)
Deck width52 ft (15.8 m)
Roadway width46 ft (14.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,787 (2023)
Projected traffic7,465 by 2043
Trucks18%
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0070 over Avoca Island Cutoff built?

It was built in 1988, making it 37 years old in 2025.

What condition is LA0070 over Avoca Island Cutoff 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 June 2023.

How much traffic does LA0070 over Avoca Island Cutoff carry?

About 6,787 vehicles per day (2023 count), of which roughly 18% are trucks.

How long is LA0070 over Avoca Island Cutoff?

The structure is 145 ft (44.2 m) long with a longest span of 25 ft (7.6 m) and a deck 52 ft wide.

Who owns LA0070 over Avoca Island Cutoff?

It is owned by the State Highway Agency.