US Bridges

LA0361 over Bayou Coco

Poor

Avoyelles Parish, Louisiana · 6.92 Mi. South of LA 29 · Structure no. 080503750304251

Built
1930
95 years old
Condition
Poor
inspected February 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
58 ft
3 main spans
Daily traffic
668
2021 count
Owner
State
State Highway Agency

About this bridge

LA0361 over Bayou Coco is a wood or timber stringer/multi-beam or girder carrying LA0361 over Bayou Coco in Avoyelles Parish, Louisiana. It was built in 1930, so it is 95 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.

It carries about 668 vehicles a day, roughly 14% of them trucks, projected to reach 734 by 2041. The structure is 58 ft (17.7 m) long and 24 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesLA0361
CrossesBayou Coco
Location6.92 Mi. South of LA 29
RouteState Highway 361
Coordinates30.88302, -92.0514
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionFebruary 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating31 US tons
Inventory rating22 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadH 10
Structure length58 ft (17.7 m)
Longest span19 ft (5.8 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic668 (2021)
Projected traffic734 by 2041
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$315,000
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0361 over Bayou Coco built?

It was built in 1930, making it 95 years old in 2025.

What condition is LA0361 over Bayou Coco 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 February 2024.

How much traffic does LA0361 over Bayou Coco carry?

About 668 vehicles per day (2021 count), of which roughly 14% are trucks.

How long is LA0361 over Bayou Coco?

The structure is 58 ft (17.7 m) long with a longest span of 19 ft (5.8 m) and a deck 24 ft wide.

Who owns LA0361 over Bayou Coco?

It is owned by the State Highway Agency.