US Bridges

Southfork Ave over Drain Bayou

FairPosted for load

East Baton Rouge Parish, Louisiana · .20 MI N.Sherwood Fr.Blvd · Structure no. 611730251910321

Built
1983
42 years old
Condition
Fair
inspected December 2023
Type
Slab
Concrete
Length
57 ft
3 main spans
Daily traffic
2,436
2019 count
Owner
City
City or Municipal Highway Agency

About this bridge

Southfork Ave over Drain Bayou is a concrete slab carrying Southfork Ave over Drain Bayou in East Baton Rouge Parish, Louisiana. It was built in 1983, so it is 42 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 5 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 2,436 vehicles a day, projected to reach 2,679 by 2039. The structure is 57 ft (17.4 m) long and 36 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesSouthfork Ave
CrossesDrain Bayou
Location.20 MI N.Sherwood Fr.Blvd
RouteCounty Highway 0
CountyEast Baton Rouge Parish
StateLouisiana
Coordinates30.42149, -91.05447
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating27.1 US tons
Inventory rating21.1 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length57 ft (17.4 m)
Longest span19 ft (5.8 m)
Deck width36 ft (11 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,436 (2019)
Projected traffic2,679 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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Southfork Ave over Drain Bayou built?

It was built in 1983, making it 42 years old in 2025.

What condition is Southfork Ave 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 December 2023.

How much traffic does Southfork Ave over Drain Bayou carry?

About 2,436 vehicles per day (2019 count).

How long is Southfork Ave over Drain Bayou?

The structure is 57 ft (17.4 m) long with a longest span of 19 ft (5.8 m) and a deck 36 ft wide.

Who owns Southfork Ave over Drain Bayou?

It is owned by the City or Municipal Highway Agency.