With the introduction of the soon to be ratified AASHTO-PC/-ASBI Segmental Box Girder Standards, precast, prestressed concrete producers have the opportunity to more fully participate in the segmental bridge market, which is estimated to have an annual construction volume of about one billion dollars in North America. The purpose of this article is to provide background material on the segmental standards, to review past segmental grade separation and interchange projects both in this country and around the world, and to present future prospects for segmental bridge construction. The general consensus is that segmental construction, in its various forms, holds a viable and promising future for the precast concrete industry.
