This California Department of Transportation (Caltrans) project entailed seismic retrofitting of all overpass bridges along a stretch of Freeway 101. Each bridge was lifted off its foundation and placed on seismic pads specially designed to withstand the lateral and upward loads resulting from seismic activity acting on the bridge assembly during an earthquake. To provide additional strength and rigidity, once the seismic pads had been successfully installed, metal plates were wrapped around the columns followed by the application of concrete. As the column work proceeded, the work sequencing refocused its efforts on repairing and refinishing all concrete which had become damaged. The abutments were reinforced as well as every column on each bridge.

DACM Project Management became involved with the project as a result of Caltrans' desire to determine and evaluate the actual manhours that the contractor was expending at each bridge location. To provide this information, it was determined that we would prepare a productivity analysis. As a basis for the conclusions which DACM Project Management would reach through the analysis, Caltrans provided our engineers with copies of the projects resident engineer's and inspectors daily reports. By evaluating the reported manhours and assigning them logically to construction activities, We could establish the work effort expended at each bridge and could extrapolate roughly from this information, the contractor's and subcontractor's costs for each task or phase as well as the total cost to perform the work at each bridge site.