San Antonio "Y", San Antonio, Texas USA - 1987
Equipment Used - Rollers modified with Accu-Roll Guidance Systems
Mating concrete bridge segments for a highway overpass is made simple with the use of Hilman Rollers. The castings for the San Antonio "Y" were rolled into place on three Hilman Rollers, modified with Accu-Roll Guidance Systems and a special top that allows for lateral adjustability.
The San Antonio "Y" is part of an upgrade of two major Texas highways that meet in a "Y" formation in the central area of San Antonio. The upgrade involved the addition of six elevated lanes to the existing four lower lanes, for nearly a 10 mile stretch. The Hilman Roller system used to roll the precast segments into place, also has the ability to "rock" for precise alignment. This concrete bridge construction process worked so well here, that it has been used for constructing other USA bridges and bridges in other countries.
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