US Bridges

LA0986 over Drainage Canal

Good

West Baton Rouge Parish, Louisiana · 0.6 M E of LA 415@LA 986 · Structure no. 616102280700621

Built
1923
102 years old
Condition
Good
inspected July 2023
Type
Culvert
Concrete
Length
23 ft
5 main spans
Daily traffic
1,204
2021 count
Owner
State
State Highway Agency

About this bridge

LA0986 over Drainage Canal is a concrete culvert carrying LA0986 over Drainage Canal in West Baton Rouge Parish, Louisiana. It was built in 1923, so it is 102 years old, older than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,204 vehicles a day, roughly 11% of them trucks, projected to reach 1,324 by 2041. The structure is 23 ft (7 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesLA0986
CrossesDrainage Canal
Location0.6 M E of LA 415@LA 986
RouteState Highway 986
CountyWest Baton Rouge Parish
StateLouisiana
Coordinates30.46197, -91.23925
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating25 US tons
Inventory rating19.3 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans5
Design loadH 15
Structure length23 ft (7 m)
Longest span4 ft (1.2 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,204 (2021)
Projected traffic1,324 by 2041
Trucks11%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$166,000
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0986 over Drainage Canal built?

It was built in 1923, making it 102 years old in 2025.

What condition is LA0986 over Drainage Canal in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2023.

How much traffic does LA0986 over Drainage Canal carry?

About 1,204 vehicles per day (2021 count), of which roughly 11% are trucks.

How long is LA0986 over Drainage Canal?

The structure is 23 ft (7 m) long with a longest span of 4 ft (1.2 m) and a deck 24 ft wide.

Who owns LA0986 over Drainage Canal?

It is owned by the State Highway Agency.