Most of the highway bridges that are in use today are most likely constructed in the 20th century with an average age of 45 to 50 years.Structurally deficient and functionally absolute bridges constitute about 10to 20 percent some of them occasionally collapsing causing life and economical losses.Building sustainable bridges is a major task today while some historic bridges still stand still to the centuries.Kesikkopru Bridge located in Sivas province of Turkey,which was built in 1292,is an outstanding example to sustainable bridges.