US Bridges

Chalona DR over 20 Arpent Canal

Good

St. Bernard Parish, Louisiana · 0.4 Mi. N. of LA 39 · Structure no. 024400000024403

Built
2019
6 years old
Condition
Good
inspected March 2023
Type
Culvert
Concrete
Length
34 ft
1 main span
Daily traffic
352
2024 count
Owner
County
County Highway Agency

About this bridge

Chalona DR over 20 Arpent Canal is a concrete culvert carrying Chalona DR over 20 Arpent Canal in St. Bernard Parish, Louisiana. It was built in 2019, so it is 6 years old, younger 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 352 vehicles a day, projected to reach 387 by 2044. The structure is 34 ft (10.4 m) long and 49 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesChalona DR
Crosses20 Arpent Canal
Location0.4 Mi. N. of LA 39
RouteCity Street 0
CountySt. Bernard Parish
StateLouisiana
Coordinates29.94327, -89.947
Functional classUrban Local

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 protection8 Very GoodNo problems noted.
Culvert9 ExcellentNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.7 US tons
Inventory rating46.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHL 93
Structure length34 ft (10.4 m)
Longest span34 ft (10.4 m)
Deck width49 ft (15 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic352 (2024)
Projected traffic387 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Chalona DR over 20 Arpent Canal built?

It was built in 2019, making it 6 years old in 2025.

What condition is Chalona DR over 20 Arpent 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 March 2023.

How much traffic does Chalona DR over 20 Arpent Canal carry?

About 352 vehicles per day (2024 count).

How long is Chalona DR over 20 Arpent Canal?

The structure is 34 ft (10.4 m) long with a longest span of 34 ft (10.4 m) and a deck 49 ft wide.

Who owns Chalona DR over 20 Arpent Canal?

It is owned by the County Highway Agency.