New England District, contractor complete work on Bearskin Neck Stone Jetty

Photo By AnnMarie Harvie | Work is now completed at the Bearskin Neck Jetty in Rockport, Mass.  

ROCKPORT, MA, UNITED STATES

05.20.2015

Story by AnnMarie Harvie 

U.S. Army Corps of Engineers, New England District

ROCKPORT, Mass. - Repair work to the Bearskin Neck Stone Jetty in Rockport, Massachusetts is complete.

“Despite being hit with a harsh winter that included Winter Storm Juno, field work was completed on the Bearskin Neck Jetty repairs, Rockport, Mass., two days before Memorial Day Weekend,” said Project Manager Stephen Dunbar.

The work on the $3.3M project consisted of repairing the 540-foot-long jetty that was damaged during Hurricane Sandy. The Bearskin Neck Jetty is located at the northern end of Bearskin Neck in Rockport, approximately 35 miles north of Boston and 20 miles south of the New Hampshire-Massachusetts border. The jetty extends into the ocean from the end of Bearskin Neck to the east and provides protection to Rockport Harbor.

Prior to construction, the jetty consisted primarily of 3-5 ton armor stone. The ocean side of the jetty retained its shape and authorized dimension while 400 feet of the jetty contained voids 5-feet-deep along the crest profile and voids 5-10 feet deep along the harbor side slope. The head at the east end of the jetty was completely removed by wave action along with the U.S. Coast Guard Aid to Navigation that was mounted there.

The work included delivery and installation of 8,900 tons of 14-19 ton armor stone and 3,800 tons of 4-8 ton armor stone to repair the jetty to authorized dimensions. Repairs provided a crest width of 18 feet for the first 400 feet, widening for the next 70 feet to a fixed width of 28 feet for the last 30 feet at the head of the jetty. Crest elevation was +18.8 feet mean lower low water (MLLW). A majority of the 18-19 ton stones were used to reconstruct the last 30 feet at the head of the jetty.

“Repairs required a substantial rebuild of the neck of the jetty, reinforcement of the toe, and moving and re-handling of new and existing stones to obtain the required 3-point interlocking,” said Dunbar. The New England District also executed a Memorandum of Agreement with the U.S. Coast Guard to install a new concrete base for Aid To Navigation (ATON) at the head of the jetty.

“The town of Rockport, residents and business owners are very happy with the finished product and that it was completed on schedule,” said Dunbar. “Thanks to the entire team-- from design through construction-- for a job well done.”

• Date Taken: 05.20.2015
• Date Posted: 07.13.2015 11:50
• Story ID: 169864
• Location: ROCKPORT, MA, US