Much of the portion southeast of the train tracks is encompassed within Logan International Airport.

Neptune Road once was a residential street that also served as the entrance to Frederick Law Olmsted's Wood Island Park, a 47-acre waterfront park designed by Olmsted in the 19th century.

An elegant tree-lined road with center islands, The Boston Globe referred to the street as a “miniature Commonwealth Avenue”.

[2] The expansion of Logan Airport in the late 1960s and early 1970s displaced families along Neptune Road, which is now used for warehouses and rental car property.

King, seized by eminent domain some 720 feet (220 m) of the street, and evicted families with the help of US Marshals.