US Bridges

Eighty Arpent RD over Delahoussaye Canal

PoorPosted for load

Iberia Parish, Louisiana · 3.4 Miles SE of LA 673 · Structure no. 032329521914201

Built
1967
58 years old
Condition
Poor
inspected October 2024
Type
Slab
Concrete
Length
57 ft
3 main spans
Daily traffic
19
2020 count
Owner
County
County Highway Agency

About this bridge

Eighty Arpent RD over Delahoussaye Canal is a concrete slab carrying Eighty Arpent RD over Delahoussaye Canal in Iberia Parish, Louisiana. It was built in 1967, so it is 58 years old, older than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 19 vehicles a day, projected to reach 20 by 2040. The structure is 57 ft (17.4 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesEighty Arpent RD
CrossesDelahoussaye Canal
Location3.4 Miles SE of LA 673
RouteCounty Highway 0
Coordinates29.86932, -91.69947
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

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.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating22.5 US tons
Inventory rating17.2 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length57 ft (17.4 m)
Longest span19 ft (5.8 m)
Deck width28 ft (8.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19 (2020)
Projected traffic20 by 2040
Trucks—
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

OwnerCounty Highway Agency
Maintained byCounty 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$217,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Eighty Arpent RD over Delahoussaye Canal built?

It was built in 1967, making it 58 years old in 2025.

What condition is Eighty Arpent RD over Delahoussaye Canal in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2024.

How much traffic does Eighty Arpent RD over Delahoussaye Canal carry?

About 19 vehicles per day (2020 count).

How long is Eighty Arpent RD over Delahoussaye Canal?

The structure is 57 ft (17.4 m) long with a longest span of 19 ft (5.8 m) and a deck 28 ft wide.

Who owns Eighty Arpent RD over Delahoussaye Canal?

It is owned by the County Highway Agency.