 All portions of US 113's interchange with MD 589 and MD 575 were completed in 2002.Auxiliary routes of MD 575 were designated between 2002 and 2004 as portions of the project to expand US 113 to a divided highway were completed.These routes are either old alignments of US 113 or service roads to provide access to private property or county highways compromised by the construction of the four-lane divided highway.