US Bridges

LA0178 over Drainage Canal

Fair

Acadia Parish, Louisiana · 0.4 MI NE of LA 95 · Structure no. 030102080100321

Built
1978
47 years old
Condition
Fair
inspected February 2023
Type
Culvert
Steel
Length
30 ft
2 main spans
Daily traffic
3,177
2021 count
Owner
State
State Highway Agency

About this bridge

LA0178 over Drainage Canal is a steel culvert carrying LA0178 over Drainage Canal in Acadia Parish, Louisiana. It was built in 1978, so it is 47 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 3,177 vehicles a day, roughly 13% of them trucks, projected to reach 3,494 by 2041. The structure is 30 ft (9.1 m) long and 65 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesLA0178
CrossesDrainage Canal
Location0.4 MI NE of LA 95
RouteState Highway 178
CountyAcadia Parish
StateLouisiana
Coordinates30.40623, -92.2098
Functional classRural Major 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
Channel and channel protection7 GoodSome minor problems.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 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 geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating82.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span13 ft (4 m)
Deck width65 ft (19.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,177 (2021)
Projected traffic3,494 by 2041
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0178 over Drainage Canal built?

It was built in 1978, making it 47 years old in 2025.

What condition is LA0178 over Drainage Canal 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 February 2023.

How much traffic does LA0178 over Drainage Canal carry?

About 3,177 vehicles per day (2021 count), of which roughly 13% are trucks.

How long is LA0178 over Drainage Canal?

The structure is 30 ft (9.1 m) long with a longest span of 13 ft (4 m) and a deck 65 ft wide.

Who owns LA0178 over Drainage Canal?

It is owned by the State Highway Agency.