US Bridges

LA0178 over Drainage Canal

PoorPosted for load

St. Landry Parish, Louisiana · 1.3 MI E of LA 357 · Structure no. 034902083001171

Built
1963
62 years old
Condition
Poor
inspected September 2024
Type
Culvert
Steel
Length
22 ft
2 main spans
Daily traffic
1,619
2021 count
Owner
State
State Highway Agency

About this bridge

LA0178 over Drainage Canal is a steel culvert carrying LA0178 over Drainage Canal in St. Landry Parish, Louisiana. It was built in 1963, so it is 62 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 3 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 1,619 vehicles a day, roughly 13% of them trucks, projected to reach 1,780 by 2041. The structure is 22 ft (6.7 m) long and 52 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesLA0178
CrossesDrainage Canal
Location1.3 MI E of LA 357
RouteState Highway 178
CountySt. Landry Parish
StateLouisiana
Coordinates30.42239, -92.1405
Functional classRural Major Collector

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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionSeptember 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 length22 ft (6.7 m)
Longest span10 ft (3 m)
Deck width52 ft (16 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,619 (2021)
Projected traffic1,780 by 2041
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 1963, making it 62 years old in 2025.

What condition is LA0178 over Drainage 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 September 2024.

How much traffic does LA0178 over Drainage Canal carry?

About 1,619 vehicles per day (2021 count), of which roughly 13% are trucks.

How long is LA0178 over Drainage Canal?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m) and a deck 52 ft wide.

Who owns LA0178 over Drainage Canal?

It is owned by the State Highway Agency.