US Bridges

LA0620 over Bayou Clausa

Fair

West Baton Rouge Parish, Louisiana · LA0620 · Structure no. 616102250201781

Built
1958
67 years old
Condition
Fair
inspected July 2023
Type
Slab
Concrete
Length
100 ft
5 main spans
Daily traffic
2,107
2021 count
Owner
State
State Highway Agency

About this bridge

LA0620 over Bayou Clausa is a concrete slab carrying LA0620 over Bayou Clausa in West Baton Rouge Parish, Louisiana. It was built in 1958, so it is 67 years old, older 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.

It carries about 2,107 vehicles a day, roughly 10% of them trucks, projected to reach 2,317 by 2041. The structure is 100 ft (30.5 m) long and 30 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesLA0620
CrossesBayou Clausa
LocationLA0620
RouteState Highway 620
CountyWest Baton Rouge Parish
StateLouisiana
Coordinates30.53589, -91.32202
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43 US tons
Inventory rating26 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadH 15
Structure length100 ft (30.5 m)
Longest span20 ft (6.1 m)
Deck width30 ft (9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,107 (2021)
Projected traffic2,317 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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$498,000
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0620 over Bayou Clausa built?

It was built in 1958, making it 67 years old in 2025.

What condition is LA0620 over Bayou Clausa 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 July 2023.

How much traffic does LA0620 over Bayou Clausa carry?

About 2,107 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is LA0620 over Bayou Clausa?

The structure is 100 ft (30.5 m) long with a longest span of 20 ft (6.1 m) and a deck 30 ft wide.

Who owns LA0620 over Bayou Clausa?

It is owned by the State Highway Agency.