The responsibilities of the Estimating/Preconstruction Department include compiling qualified bidders lists, issuing invitations to bidders, soliciting bids, preparing estimates, quantifying and pricing labor and materials, receiving bids, and reviewing bids to prepare total project costs. Clark Civil performs heavy/civil work including airport, heavy rail, light rail, bridges, interstate road work, electrical substations, water and wastewater treatment, and facilities projects ranging from $10 million to $500 million.