US Bridges

LA0099 over Bayou Chene

Fair

Jefferson Davis Parish, Louisiana · 3.8 MI N of LA 380 · Structure no. 072701980203971

Built
1979
46 years old
Condition
Fair
inspected August 2023
Type
Slab
Concrete Continuous
Length
320 ft
16 main spans
Daily traffic
456
2021 count
Owner
State
State Highway Agency

About this bridge

LA0099 over Bayou Chene is a concrete continuous slab carrying LA0099 over Bayou Chene in Jefferson Davis Parish, Louisiana. It was built in 1979, so it is 46 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 5 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 456 vehicles a day, roughly 17% of them trucks, projected to reach 501 by 2041. The structure is 320 ft (97.5 m) long and 33 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesLA0099
CrossesBayou Chene
Location3.8 MI N of LA 380
RouteState Highway 99
Coordinates30.14606, -92.8174
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56 US tons
Inventory rating33 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans16
Design loadHS 20
Structure length320 ft (97.5 m)
Longest span20 ft (6.1 m)
Deck width33 ft (10 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic456 (2021)
Projected traffic501 by 2041
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0099 over Bayou Chene built?

It was built in 1979, making it 46 years old in 2025.

What condition is LA0099 over Bayou Chene 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 August 2023.

How much traffic does LA0099 over Bayou Chene carry?

About 456 vehicles per day (2021 count), of which roughly 17% are trucks.

How long is LA0099 over Bayou Chene?

The structure is 320 ft (97.5 m) long with a longest span of 20 ft (6.1 m) and a deck 33 ft wide.

Who owns LA0099 over Bayou Chene?

It is owned by the State Highway Agency.