sentences:  At a cost around $300 thousand, all signage was replaced by July 1, 2009.In November 2009, US 421 was rerouted onto the Urban Loop, replacing most of I-40's brief alignment around Greensboro.The current alignment of I-40 is four miles (6 km) shorter than the 2008 Urban Loop routing, and is the quicker route for any vehicle consistently traveling at the posted speed limits.