Arborway (also known as The Arborway) consists of a four-lane, divided parkway and a two lane residential street in the Jamaica Plain neighborhood of Boston, Massachusetts. It was designed by Frederick Law Olmsted in the 1890s as the south most carriage road in a series of parkways connecting parks from Boston Common in downtown Boston to Franklin Park in Roxbury. This park system has since become known as the Emerald Necklace of Boston.
The Arborway begins at a large rotary that connects it with the Jamaicaway, and curves past the main entrance of Arnold Arboretum (125 Arborway), where on-street parking is allowed. The roadway once continued through Forest Hills to the edge of Franklin Park, but now ends at the South Street border of the Arboretum. From there, traffic exits into Forest Hills next to Forest Hills Station. The entire roadway is signed as Massachusetts Route 203, which continues along the parkway as Morton Street.
Named Monsignor William J. Casey Overpass in honor of a Depression-era priest of St. Thomas Aquinas Church in Jamaica Plain, the overpass was constructed in the mid-1950s to allow the increasing automobile traffic of the day to bypass the north-south traffic on Washington Street, South Street, and Hyde Park Avenue. In the 2000s, community groups were investigating the possibility of fixing this "missing link" in the Emerald Necklace. The Massachusetts Department of Transportation determined the overpass "structurally deficient" in 2010 and started work on replacing it with an at-grade roadway. By 2015, the overpass had been demolished.
- Rappaport Institute, "Casey Overpass" Archived September 7, 2006, at the Wayback Machine.
- "About the Project - Casey Overpass". www.massdot.state.ma.us. MassDOT Highway. Retrieved 2017-01-22.
- "Casey Overpass is coming down, to the delight of some, and the dismay of others - The Boston Globe". BostonGlobe.com. Retrieved 2017-01-22.
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