March 19, 2025

Major Construction Underway for Flyover Project in Charleston County

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News Summary

Construction has begun on a $354 million flyover project at the intersection of Main Road and U.S. Highway 17 in Charleston County. This significant endeavor, set to alleviate traffic congestion for West Ashley and Johns Island residents, includes a new interchange and widened roads. The project is expected to be completed by late September 2028, following a series of preliminary preparations. Community feedback indicates a mix of excitement and concern about the potential for increased traffic and changing local dynamics as construction progresses.

Major Construction Underway for $354 Million Flyover Project at Main Road and U.S. Highway 17 in Charleston County

In a significant development for local traffic management, the much-anticipated construction of a flyover at the bustling intersection of **Main Road** and **U.S. Highway 17** began on **March 12, 2025**. This project promises a massive overhaul of the area, which serves as a vital conduit for residents of **West Ashley** and **Johns Island**.

Addressing Traffic Congestion

The flyover initiative is just one part of a larger plan by Charleston County officials aimed at improving traffic flow. Alongside the construction of the flyovers, there are plans for an **interchange** designed to assist drivers in avoiding congestion at the Main Road and Highway 17 intersection. Additionally, a **bridge over CSX Railroad** and a **roundabout** at the intersection of **Main, Chisholm,** and **River Roads** will also be introduced to facilitate smoother transit.

Widening Main Road

To accommodate the anticipated increase in traffic post-construction, Main Road will be widened from **River and Chisholm Roads** to the interchange ramps. This adjustment marks a crucial step in addressing the growing transport needs of the region.

Project Cost and Timeline

Initially part of a broader initiative for **Main Road** stretching from **Bees Ferry Road** to **Betsy Kerrison Parkway**, this traffic improvement project has undergone significant alterations. Originally estimated to cost **$130 million** in 2020, the plans have now escalated in scope and complexity, leading to a revised budget of **$354 million**, making it the largest infrastructure project in Charleston County history. Final project completion is projected for **late September 2028**.

Funding and Preparations

Funding for this major venture comes from the **2016 half-cent transportation sales tax**, designed to enhance road infrastructure across the county. Herb Nimz, the county project manager, has detailed that right-of-way acquisitions and preliminary **test pile assessments** are currently in progress to ensure the structural integrity of the future constructions. Prior to construction beginning in **May 2025**, utility relocations for essential services such as the **Charleston Water System** and **Dominion Energy** are also scheduled.

Community Response

Work Schedule and Public Impact

To minimize disruption, the bulk of road work will primarily occur at night. However, residents should remain aware that traffic delays will still be a possibility, and planning ahead will be key during the construction period. Jamie Jacobs, a West Ashley resident, is hopeful for improved commute times, particularly during peak congestion hours.

Future Considerations

Unfortunately, plans for a **bike and pedestrian bridge** were cut from the project; nevertheless, there are ongoing efforts to ensure that at least a sidewalk will be established. This reflects a dedicated push to enhance accessibility in the area, although many residents will be watching closely to see how effectively traffic issues will be addressed once the improvements are in place.

As the project unfolds over the coming years, it remains clear that the enhancements are set to significantly improve traffic flow at the intersection of Main Road and Highway 17, potentially easing red-light delays and ensuring a smoother travel experience for all local commuters.