Louisiana Avenue Extension, Phase II D2

Public Works Project Number: 1299

Project Length (miles): 0.6

Parish District: 1

Construction Estimate: $4,670,185.00

Project Cost: $5,435,000.00

Project Type: Traffic, Roads, & Bridges

Designer: Duplantis Design Group, PC

PROJECT OVERVIEW

The Louisiana Avenue Extension Phase II project plans to extend Louisiana Avenue to Gloria Switch Road. The project involves the construction of a new concrete roadway, full depth replacement of the existing asphalt roadway with concrete, and a concrete roundabout at the new Gloria Switch and Louisiana Avenue intersection. It will also include pedestrian crossings, sidewalks, subsurface drainage, addition of a box culvert, curb and gutter, and a grass median. Overall, the Louisiana Avenue Extension Phase II project will provide significant benefits to the community by improving transportation infrastructure, creating a more efficient traffic flow in the area, ensuring the safety of pedestrians and motorists, and enhancing pedestrian accessibility of the area.

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

Fill mitigation, which serves to maintain overall floodplain storage, will occur on this project. Stormwater detention areas tying to the drainage system are being developed in conjunction with each new LCG road project.

The drainage considerations for this specific project are the following:

A portion or all of this project is located within a Special Flood Hazard Area (SFHA).

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, providing shade, and improving the overall appearance of the corridor. They can also help to mitigate stormwater runoff by allowing rainwater to be absorbed into the soil and plants rather than simply flowing into storm drains or other drainage systems. This can help to reduce the amount of water that needs to be managed by these systems and can also help to prevent flooding and erosion.

This project will construct a subsurface drainage system consisting of storm drain pipes and manholes of various sizes along the project, as well as a bridge over Manor Park Coulee. 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: Removal of existing trees.

*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 the acquisition of right-of-way for the reconstruction of the infrastructure along East Gloria Switch Road, the Louisiana Ave extension, and the intersection of East Butcher Switch Road. This may involve acquiring portions of existing land to create the necessary space for the new infrastructure.