On this San Mateo Harbor job, Vortex was responsible for the mechanical dredging of approximately 5,600 cubic yard of sediment at Pillar Point Harbor Boat Launch Ramp. To complete this project we has to construct a 0.79 acre upland dredge material disposal site on Perch Beach, west of the dredge site.
This project consisted of a complete rebuild of an operating 250 slip deepwater marina. Vortex, as prime contractor, coordinated the phased operations of demolition, dredging and new installation of a proprietary heavy timber dock system with prestressed concrete piles.
This challenging design-build project, the first repair method of its kind, entailed installation of a concrete secant pile cut-off wall immediately upstream of the existing dam and spillway structure, to prevent the flow of water under the dam, eliminating the potential for structural failure.