The elevated section of Route 203, known as the Casey Overpass or Bridge No. B-16-367, carried the Arborway over Washington and South Streets in Boston’s Jamaica Plain neighborhood. The Casey Arborway Project involved removing structurally deficient Bridge No. B-16-367 and replacing it with an on-grade roadway network. SGH assisted the demolition contractor by evaluating the effects of proposed construction loading and sequencing on the overall structural stability during demolition.