Owner: Vermont Agency of Transportation Partner: J.A. MacDonald, Inc. Location: Georgia, Vermont Project Description: Designed and installed a cofferdam to allow for the replacement of a culvert under I-89. It was replaced by J.A. MacDonald, utilizing the sequential excavation method.
Owner: Brookfield Renewable Partners Partner: Bancroft Contracting Corp. Location: Waterville, Maine Project Overview: Designed and Installed a cellular cofferdam to assist the construction of a new fish passage. The cofferdam consisted of five major cells with a diameter of 29’ and four minor cells with a diameter of 21’. All nine cells were backfilled with +/- 5500 cu.yds…
Owner: City of Portsmouth Partner: Methuen Construction Location: Portsmouth, New Hampshire Project Description: Designed and installed a cofferdam to support an excavation depth of 26’ feet, which included a 12’ cut in bedrock. The cofferdam was supported with soil anchors, tie-rods/deadman, and drilled pin pile to support the sheet pile tips.
Owner: Maine Turnpike Authority Partner: Cianbro Location: Portland, Maine Project Overview: Designed and installed four cofferdams for the I-95 widening project over the Stroudwater River. Installed new bearing piles for the pier footings after the cofferdams were installed.
Owner: Town of Falmouth Partner: Apex Construction Location: Falmouth, Maine Project Overview: Designed and installed a cofferdam to support an excavation depth of +/- 24’, which included +/- 15’ in bedrock. The cofferdam supported the excavation with internal bracing and pin pile drilled into ledge.
Owner: Maine Department of Transportation Partner: Shaw Brothers Construction Location: South Portland, Maine Project Description: Installed (+/- 230) 36” & 42” diameter drilled shafts for new sound wall.
Owner: Pyramid Network Solutions Location: Portland, Maine Project Overview: Drilled three, 42” diameter shafts, 30’ deep, with 2’ rock sockets into ledge.
Owner: City of Portsmouth Partner: Consigli Location: Portsmouth, New Hampshire Project Description: Drove (+/- 250) 14×117 piles to support the new parking garage pile cap & grade beam foundation.
Owner: Custom Float Services Location: Portland, Maine Project Overview: Drove (34) HP12x53 & 20” diameter pipe piles for new pier and abutment footings to replace a failing bulkhead. Installed (23) HP10x42 piles for scour protection.
Owner: Town of Newmarket Partner: Apex Construction Location: Newmarket, New Hampshire Project Overview: Drove (700) 7” diameter load-transfer pipe piles to support the new control building and clarifier/aeration tanks.
Owner: IDEXX Laboratories Partner: PC Construction Location: Westbrook, Maine Project Overview: Drove (239) HP12x53 & HP10x42 piles to support the new building expansion pile cap & grade beam foundation. Utilized our RTG 19T rig to initially install the piles to bedrock. Drove all bearing piles to their ultimate capacities with a diesel impact hammer.
Owner: Massachusetts Port Authority Partner: SPS New England Location: Boston, Massachusetts Project Overview: Drove (36) 30” OD x 1” thick pipe piles, mainly from a barge, to construct the bridge foundations spanning the Reserved Channel. Installed (18) 20” diameter pipe piles for the new bridge abutments on each side of the Reserved Channel. Constructed various excavation support structures…