Replacement of Uncle Tim's Pedestrian Bridge
Environmental Partners was built on the core philosophy that a strict focus on client service through partnership creates added value for our clients.
Originally built over a century ago and partially replaced in the 1970s, the wooden bridge connecting Commercial Street to Cannon Hill over Duck Creek is an important part of the Wellfleet landscape.
Environmental Partners completed a structural inspection of the existing bridge condition in 2003 and identified several components that needed replacement. The presence of soft rot decay was noted in the piles, bents and decking. The railing system was unstable and in poor condition. Selective spot replacement of piles, stringers, decking and hand rails was initially recommended. Upon further discussions with the Town, including the Department of Public Works, Historical Commission and the Conservation Commission, a complete replacement approach was adopted.
To span the 300 foot wide Duck Creek with a mean tide variation of five (5) feet, the new design called for replacement of 60 wooden piles with new Greenheart piles, ten feet on center. A new superstructure consisting 5/4"x 6"decking planks supported by three 4"x10" pressure treated stringers spanning between pile caps. New 4"x4" railing posts and side and hand rails completed the deck. Deck posts were spaced at 7'6" to match the previous spacing and fitted with kickers and a 15" deck overhang.
Construction commenced after Labor Day and was completed in six (6) weeks. Work was carefully sequenced around tide cycles. Demolition and pile driving took approximately three (3) weeks to complete. Pile lengths varied from 16 feet to 37 feet, averaging approximately 30 feet in the centre of the creek. Deck framing and finish work was completed in three weeks.
Environmental Partners prepared the plans, specifications and permits for the project, coordinated the bidding process and oversaw construction. Collaboration between the various town boards, DPW and contractor (Robert B. Our Co. Inc., Harwich) resulted in a successful project that the town can be proud of for many years.