US Bridges

I0049 over Chemard Bayou

Fair

De Soto Parish, Louisiana · 2.24 MI South of LA 177 · Structure no. 041604550700902

Built
1987
38 years old
Condition
Fair
inspected July 2024
Type
Slab
Concrete
Length
260 ft
13 main spans
Daily traffic
28,142
2021 count
Owner
State
State Highway Agency

About this bridge

I0049 over Chemard Bayou is a concrete slab carrying I0049 over Chemard Bayou in De Soto Parish, Louisiana. It was built in 1987, so it is 38 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.

It carries about 28,142 vehicles a day, roughly 36% of them trucks, projected to reach 30,956 by 2041. The structure is 260 ft (79.2 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI0049
CrossesChemard Bayou
Location2.24 MI South of LA 177
RouteInterstate 49
Coordinates31.9347, -93.4365
Functional classRural Principal Arterial - Interstate

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 protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating45 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans13
Design loadHS 20
Structure length260 ft (79.2 m)
Longest span20 ft (6.1 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic28,142 (2021)
Projected traffic30,956 by 2041
Trucks36%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I0049 over Chemard Bayou built?

It was built in 1987, making it 38 years old in 2025.

What condition is I0049 over Chemard 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 July 2024.

How much traffic does I0049 over Chemard Bayou carry?

About 28,142 vehicles per day (2021 count), of which roughly 36% are trucks.

How long is I0049 over Chemard Bayou?

The structure is 260 ft (79.2 m) long with a longest span of 20 ft (6.1 m) and a deck 43 ft wide.

Who owns I0049 over Chemard Bayou?

It is owned by the State Highway Agency.