Patent ID: 6795992
Filing Date: 2004-09-28
Classification: E02D

Abstract:
A method for constructing an underpass below a first section of a pre-existing first way where a first quantity of debris must be removed from an underpass space below the first section to form the underpass and enable passage of traffic along a second way, the method comprising the steps of:providing foundation pairs on either side of the underpass space, each pair including first and second foundations on opposite sides of the first section; providing a rigid first pier cap between the first and second foundations of the first foundation pair below the first way; providing a second rigid pier cap between the first and second foundations of the second foundation pair below the first way halting traffic along the first section; removing the first section; removing at least a portion of the first quantity of debris from within the underpass space sufficient to enable installation of a superstructure substantially between the first and second foundation pairs and supported by the top ends of the first and second foundation pairs; providing a superstructure substantially between the first and second pier caps and supported by the top ends of the first and second pier caps; constructing a new first section; and resuming first way traffic.