US Bridges

Coco RD over Drain Bayou

FairPosted for load

Ascension Parish, Louisiana · 0.1 MI N of LA 73 · Structure no. 610300000610189

Built
2014
11 years old
Condition
Fair
inspected April 2023
Type
Culvert
Concrete
Length
22 ft
2 main spans
Daily traffic
50
2019 count
Owner
County
County Highway Agency

About this bridge

Coco RD over Drain Bayou is a concrete culvert carrying Coco RD over Drain Bayou in Ascension Parish, Louisiana. It was built in 2014, so it is 11 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. Its operating status is: posted for load restriction.

It carries about 50 vehicles a day, projected to reach 55 by 2039. The structure is 22 ft (6.7 m) long and 43 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesCoco RD
CrossesDrain Bayou
Location0.1 MI N of LA 73
RouteCounty Highway 0
Coordinates30.22367, -91.00563
Functional classRural Local

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.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32.2 US tons
Inventory rating24.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length22 ft (6.7 m)
Longest span11 ft (3.4 m)
Deck width43 ft (13.1 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2019)
Projected traffic55 by 2039
Trucks—
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

OwnerCounty Highway Agency
Maintained byCounty 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 Coco RD over Drain Bayou built?

It was built in 2014, making it 11 years old in 2025.

What condition is Coco RD over Drain Bayou 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 April 2023.

How much traffic does Coco RD over Drain Bayou carry?

About 50 vehicles per day (2019 count).

How long is Coco RD over Drain Bayou?

The structure is 22 ft (6.7 m) long with a longest span of 11 ft (3.4 m) and a deck 43 ft wide.

Who owns Coco RD over Drain Bayou?

It is owned by the County Highway Agency.