MOVABLE SPAN: Boynton Beach Bascule Bridge, Palm Beach County, FL

摘要

The construction of the Boynton Beach Bascule Bridge presented many challenges to the owner, designer, and the construction team. The new bridge was constructed on the same alignment as the existing bridge so the first task was removing the existing Bascule Bridge. A 300-ton mobile crane was used to remove each leaf of the old rolling lift bridge in two pieces. Demolition of bascule piers is always a difficult task. The piers were founded on large footings, which were poured on the top of thick concrete seals. Both engineers and contractors often underestimate the time required for this phase. The Boynton Beach Bridge was no exception. Complete removal of the span, piers, and piling took approximately six months, three months longer than anticipated.