>>>>>> It's better to build a bridge that lasts for 50-60 years, and have the option value of replacing it with a better structure down the road. And then we g

>>>>>> It's better to build a bridge that lasts for 50-60 years, and have the option value of replacing it with a better structure down the road. And then we get to where we are now a lot faster. . . http://www.businessinsider.com/worst-state-road-systems-2010-7?op=1 http://www.businessinsider.com/worst-state-road-systems-2010... "Over 90,000 miles of roads and 71,000 bridges are in dangerous disrepair, according to a 2010 U.S. PIRG study."