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Location:
Kittery, ME
Completed:
2020

Berth 11 Structural Repairs

Scope of Work
Cianbro repaired and modernized 1,210-linear feet of pile-supported open wharf structures, which were originally constructed in 1943. The scope of work involved the sequenced installation of a king pile-supported precast concrete shutter panel wall and sheet pile bulkhead. The berths are used for submarine maintenance at the facility.
Project Details
  • Cianbro:
    • Removed the existing timber fender system and catwalks
    • Dredged and disposed of 4,200 cubic yards of native material for the installation of the shutter panel wall
    • Installed 130 linear feet of AZ sheet pile bulkhead
    • Installed and tested 9,794 linear feet of 2.5-inch and 3-inch thread bar rock anchors
    • Installed 91 ea. rock socketed (4-foot diameter by 9-feet deep) king piles (W36X282)
    • Installed 452 ea. 8-feet by 12-feet by 1.25-feet precast concrete shutter panels
    • Extended the existing stormwater discharge piping
    • Placed 19,460 cubic yards of washed stone under the existing wharf
    • Placed 1,891 cubic yards of concrete for the new shutter panel wall cap
    • Installed and tested 1,386 linear feet of HP117 support piling to reinforce the existing wharf structure
    • Performed underwater pile repairs including driving support pile through holes cut in existing deck to connect and support the existing crane rail beams
    • Performed pile jacket repairs, lighting, utilities, duct bank repairs, and wheeler line work
Lean, Innovative and Unique Project Solutions
This was a multi-phase project with an aggressive schedule. This required extensive coordination with the working shipyard facility, which had a time-sensitive submarine berthing schedule. All work was performed inside the shipyard's highly congested and secured industrial area, which presented the logistical challenge of coordinating all personnel, material, and equipment movements. Additionally, the majority of the work was performed with barge-mounted equipment due to limited access from the shore.
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Our Offices
Corporate Headquarters
P.O. Box 1000
Pittsfield, ME 04967
207-487-3311
info@cianbro.com

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