sentences:  The Texas Department of Transportation's Laredo District is preparing for future growth with plans to upgrade Loop 20 into a freeway by building overpasses at major intersections and constructing frontage roads.A short freeway section, which is co-signed with both Interstate 69W and U.S. Highway 59, currently exists from the World Trade International Bridge east to Interstate 35 and TxDOT recently constructed a diamond interchange at Loop 20's intersection with U.S. Highway 59 in eastern Laredo; the stack interchange with Interstate 35, locally known as the Milo Interchange, is partially complete.As of 2008, TxDOT planned to complete interchanges and overpasses at all of Loop 20's major intersections within the next ten years.