N. St. Antoine Extension

Public Works Project Number: 1105

Project Length (miles): 1.5

Parish District: 1, 5

Construction Estimate: $15,000,000.00

Project Cost: $17,000,000.00

Project Type: Traffic, Roads & Bridges

Designer: Duplantis Design Group, PC

PROJECT OVERVIEW

The North St. Antoine St. Extension project is a construction project aimed at extending and improving the current road infrastructure in the area. The project primarily involves extending North St. Antoine St. from just north of I-10 to Pont Des Mouton. The new corridor will be made up of concrete pavement and will involve curb and gutter, subsurface drainage, relocation of drainage structures, addition of box culverts and slab span bridges, pedestrian sidewalk on the west side of the roadway, and a landscaped median. Overall, the North St. Antoine St. Extension project will provide significant benefits to the local community, including improved road safety, increased connectivity, additional capacity, reduced maintenance costs, and increased resilience to weather-related events.

TYPICAL SECTION

The graphic below provides a conceptual view of the proposed improvements that will be considered for the project.

DRAINAGE AND GREEN INFRASTRUCTURE CONSIDERATIONS

The new corridor will consist of a grass median and grass buffers on both sides of the roadway. These new green spaces will provide numerous benefits such as reducing air pollution, mitigating stormwater runoff, helping to prevent erosion, and improving the overall appearance of the corridor.

This project will remove and replace storm drain pipes and manholes of various sizes along the project. Throughout the project, the construction team will carefully monitor the drainage system to ensure that it is functioning correctly. They will also make any necessary adjustments to the system to ensure that it is optimized for the area's drainage needs.

The new corridor will utilize a closed (sub-surface) system with curb and gutter to collect and transport water runoff quickly to a stormwater system which will aid in the prevention of flooding.

ENVIRONMENTAL CONSIDERATIONS

Minimal environmental considerations have been identified and must be reviewed and potentially addressed. This includes:

• Possible wetland mitigation.

*Note that this is not exhaustive of possible future environmental considerations.

UTILITY CONSIDERATIONS

A preliminary assessment of the project area is provided for the utilities listed below. Potential utility relocation costs will be included in the project budget if the infrastructure is located within the utility’s own servitude.

RIGHT OF WAY CONSIDERATIONS

The project at hand involves significant right-of-way acquisition and construction servitudes, which are necessary for the construction of a new roadway. The right-of-way acquisition process will involve identifying the required areas for the reconstruction of the existing roadway and construction of the new roadway. This will involve a careful analysis of the project plans to determine the amount of land needed to accommodate the new infrastructure.