Y--Repairs to the Jetties in Newburyport Harbor at Salisbury and Newburyport, MA

Award announcement for Jetties in Newburyport Harbor at Salisbury and Newburyport, MA. The work consists of repairing the 3100-foot-long North Jetty in Salisbury and completing repairs to the remaining (most seaward) 140 feet of the 1,500-foot-long South Jetty in Newburyport that were damaged during Hurricane Sandy. Approximately 30,000 tons of armor stone will be required - including approximately 5,000 tons of 14- to 19-ton armor stone. Crest width varies from 5 to 15 feet. Crest elevation at the most seaward end is +12.3 feet mean lower low water (mllw), and +17.3 mllw at the landward end. Side slopes are 1 vertical:1 horizontal on the river side and 2 horizontal:1 vertical on the ocean side. The work includes replacing displaced core and armor stone to fill in existing gaps in the jetty. Repairs will require substantial moving and rehandling of existing stones to obtain the required interlocking placement. Work also includes repair of a 190-foot-long stone spur off the North Jetty, approximately 600 feet seaward from the beginning of the jetty, and removal of two Navigation Aids (metal towers and concrete bases) from the North Jetty, and installation of new concrete bases. About 6 days per month during the construction window seas can be expected to be in excess of 8 feet in the river mouth. Stone deliveries to the jetties shall be done by water for the seaward half of the North Jetty and for the entire 140-foot portion of the South Jetty. Equipment and stone delivery and access to the jetty may be performed from land, water, or a combination for the landward half of the North Jetty. It is expected that there will be no seasonal constraints on the work. The expected storage/staging area for the stone, equipment, and trailer is on MA Department of Conservation & Recreation (DCR) property in Salisbury. Any DCR property, including the parking lot, dunes, and any excess vegetation damaged will be restored to their pre-construction condition. Contract duration is within 15 days from Notice to Proceed through March 31, 2016.