Add crosswalks leading to LoPresti Park and Lombardi Memorial Park

"Accessible crosswalks that align with existing walking patterns to these open spaces are missing. A crosswalk is needed at the Sumner Street/Liverpoool Street intersection to LoPresti Park, while a series of crosswalks aligning with Landing Street and Cunard Way would better connect residents to Lombardi Memorial Park." (Source: "PLAN: East Boston," pg 37)