Permanent or temporary formwork can be used to construct cast-in-place concrete bridge deck slabs. Permanent formwork, also referred to as stay-in-place formwork, can either be constructed from steel or concrete components, while temporary formwork typically consists of wood elements. States typically specify whether or not it is acceptable to use stay-in-place formwork. The forming of the cantilever portion of the deck slab at the exterior of the bridge is typically supplemented with deck overhang brackets.