A Braintree developer says it will soon file plans to turn the 20.5-acre site of a former sugar refinery on the Mystic River into a large mixed-use development fronted by a large seawall that will both protect the lower parts of the area from flooding caused by rising seas and create a new linear park that will give residents access to that part of the waterfront for the first time in decades.
In a letter of intent filed yesterday, the Flatley Co., which already owns the Schraft Center and an office park next to the old Domino's site on Medford Street, says the sea wall/harbor walk will stretch three-quarters of a mile and will protect "a large swath of Charlestown, Cambridge and Somerville" from the sort of flooding the area could expect to see due to climate change, at least through 2070.
It's the latest proposal from developers to transform the neighborhood.
Earlier this month, developers proposed life-sciences labs, residential units and hotel rooms on 13 acres on the northern and western sides of Sullivan Square. Another developer has proposed a 29-story residential tower in the same area. An addition of 270 residential units to the Bunker Hill Mall could be the start of even more development at the six-acre site. And work continues on plans for a $1-billion redo of the Bunker Hill development that will include the addition of nearly 2,700 market-rate residential units to the existing, but rebuilt, public-housing apartments.
425 Medford St. filings and calendar.