Highway 41 Corridor Improvements

More than a highway widening

Overview

The Highway 41 Corridor Improvements project will address future traffic congestion, enhance road safety and connectivity, and improve multiple major intersections along this corridor.

Reduce congestion within the 41 corridor
Enhance safety throughout the corridor
Improve the transportation system and community connections
Accommodate future traffic projections
Provide connected bicycle and pedestrian accommodations
Minimize community and environmental impacts

Features

The project will include roadway widening, intersection improvements, and the Laurel Hill Parkway, a new local connection road for nearby communities.

Explore these improvements by clicking the tabs below.

Widen Highway 41 to a 4-3-4 configuration, including:

Two travel lanes in each direction from the Wando River Bridge to Dunes West Boulevard/Rivertowne Parkway
One lane in each direction with a center turn lane/median through the Phillips Community
Two travel lanes in each direction from south of Joe Rouse Road to Highway 17

Major improvements to the intersections of Highway 41 & US 17, Highway 41 & Dunes West Boulevard, and US 17 & Winnowing Way/Porchers Bluff Road
Adds traffic signals at new intersections of Highway 41 & Winnowing Way and Highway 41 & Laurel Hill Parkway/Cardinal Hill
Relocates and improves the Park West Boulevard roundabout

Click on the yellow circles to view the intersection designs.

View a detailed map of the project design.

3D Rendering

Benefits

The Highway 41 Corridor Improvements project is more than a highway widening — it’s an opportunity to provide a future where Mt. Pleasant residents and commuters can safely and efficiently access the resources they need, the amenities they enjoy, and the people they love for years to come.

Benefits of the project design include:

Minimization of impacts to the Phillips Community
Elimination of property impacts to Seven Mile at the 41/17 connections
Avoids and minimizes wetland impacts wherever possible

Additional lanes on Highway 41 to ease congestion
Addition of the Laurel Hill Parkway, which will also benefit first responders to access incidents and provide evacuation routes

High visibility bike and pedestrian accommodations at intersections
Multi-use path and community-focused speed limit on Laurel Hill Parkway

Designs that incorporate flood prevention and water quality standards, including diversion of stormwater away from communities
Continued coordination with Charleston County Parks and Recreation for future accommodations in Laurel Hill County Park

Designs that reduce congestion and accommodate future traffic projections for the next 20 years