Cofferdam Retention Structure and Water Main Relocation

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Piers & BulkheadsCofferdam Retention Structure and Water Main Relocation

Owner : Maryland Port Administration

Location : Baltimore, MD

This project was for the Maryland Port Administration at their Masonville Marine Terminal Facility.
McLean’s contract with the MPA includes construction of 295 ft. of center bulkhead, 1,152 LF of sheet pile cellular cofferdam, 935 LF of subaqueous pile supported 48” diameter water line and the thrust block cofferdam at the tie in of the new 48” water line to the existing.
The sheet pile cells are 69 ft. in diameter made up of 132 PS31 sheet pile, 80 feet long. The 1,152 cellular cofferdam is made up of 14 cells.
The thrust block cofferdam is probably one of the toughest that McLean has tackled. The existing water line is at elevation -37.0 ft. below the harbor. The cofferdam is constructed around the existing line and most contain a tremie seal to allow dewatering of the cofferdam to make the tie in. The ends of the cofferdam must also be sealed around the existing water line to resist the water pressure and seal the cofferdam around and under the pipe.

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Paula Sidlowski

CHIEF FINANCIAL OFFICER

Paula has been Chief Financial Officer at Mclean since 2016, and has over 35 years of financial experience in project focused industries.

She is responsible for all financial and accounting functions, as well as human resources and information technology across all divisions of the Company.

She is a Certified Public Accountant, a Certified Global Management Accountant and holds a Masters in Business Administration.

Cory Heisey

CHIEF OPERATIONS OFFICER

Mr. Heisey has gained over 35 years of experience in the heavy/marine/bridge construction industry while working for McLean Contracting Company in various capacities. In his current position as Chief Operating Officer, Cory has P/L responsibility for the Company’s construction division, including company-wide planning and oversight of McLean’s construction operations, project selection and planning decisions during the pursuit stage, and oversite of the Company’s equipment department. Cory is a registered Professional Engineer and received a Bachelor of Science degree in civil engineering from Pennsylvania State University in 1986.