Life-cycle cost analysis of a concrete road bridge across open sea

A Life cycle cost analysis (LCCA) was made of a 2,345 m-long prestressed concrete road bridge across open sea. The bridge was completed at a cost of 34.2 million and opened to the traffic during 1988. it is subject to periodic maintenance such as painting, repair and replacement of affected parts. The LCCA used the net present value method for a 50 year design life. The annual cost of corrosion is ~$43,000. By adopting galvanic cathodic protection, the annual cost of corrosion can be brought down to ~$40,000.