Blog

August 23, 2017

Tunnel Boring Machine Launches in Charleston

Davis & Floyd is a proud member of the Spring / Fishburne US17 Drainage Improvements Project team for the City of Charleston. Together, we are celebrating the launch of a Tunnel Boring Machine (TBM) that recently entered a 150-foot-deep shaft. Currently, the TBM is underground and headed generally along Septima Clark Parkway to Coming Street. At 12 feet in diameter, this is the largest tunnel to date in the Charleston region and will eventually convey stormwater runoff from flood-prone areas within the drainage basin to a pump station and outfall at the Ashley River (construction starting in 2018). Once all phases of the project are completed, this work will provide reliable drainage service independent of tides with provisions to accommodate and facilitate further mitigation efforts for addressing sea level rise. Resilient development relies on resilient infrastructure to support it and while the Spring / Fishburne and other similar projects will not prevent flooding within the Charleston peninsula, the impacts and damages resulting from the dry and wet weather flooding that are increasing in frequency today will be better avoided tomorrow.

Tunnel Boring Machine with project representatives from the City of Charleston, Black & Veatch, and Davis & Floyd

Tunnel Boring Machine with project representatives from the City of Charleston, Black & Veatch, and Davis & Floyd

30-foot-diameter, 150-foot-deep access shaft

30-foot-diameter, 150-foot-deep access shaft

Additional project information can be found at http://www.charleston-sc.gov/index.aspx?NID=1172.