The presentation is focused on total project cost management for an owner using case-studies of design-bid-build for owner-agency. The paper outlines set of processes that were implemented to manage project costs from design stage transitioning to construction and closing out the project. The presentation discusses various data points tracked from engineer’s estimate developed during design phase that is being used to derive conceptual cost estimate for future project items. Costs during construction phase is validated using quantities summarized on a monthly basis in the form of ‘progress estimate’. The progress estimate costs are utilized to develop burn-rate to forecast the project health and pro-actively manage contracts and change orders. Dashboard style reports were developed to provide earned value metrics using real-time project information. Discussions involves challenges faced in areas of cost management concepts, communication, information sharing and consistent use of defined processes by sections within agency.
Track: Construction Management
Case Study: Deck Replacement of Westbound Through Truss Spans of the Chesapeake Bay Bridge
Paper (1): Case Study: Deck Replacement of Westbound Through Truss Spans of the Chesapeake Bay Bridge
Abstract: This project involved the repair of a complex structural system on Maryland’s Iconic Bay Bridge. The Deck Replacement of the Westbound Through Cantilever Truss Span (Through Truss) portion of the Chesapeake Bay Bridge Project involved removal of the original cast-in-place concrete decking and replacing it with precast concrete sections, integrally cast with guardrail. The existing structural steel stringers in the Through Truss were to remain in place and support the new precast concrete decking. A survey performed by the Contractor of the existing structural steel stringers in the Through Truss resulted in the submittal of numerous change orders by the Contractor alleging a differing site condition that would require a significant redesign effort. The damages alleged by the Contractor exceeded the original contract value. What happened, why and who was responsible…the rest of the story!
