 The east–west portion of the highway that now forms its northernmost portion was built as a county highway around 1970 and reconstructed as a four-lane divided highway in 1988.MD 162 and MD 170 on the perimeter of the airport had their names changed to Aviation Boulevard (from Hammonds Ferry Road and Camp Meade Road, respectively) by 1991.The highway was expanded to a multi-lane divided highway from MD 762 south to the southern edge of the residential subdivision in 1993 and to MD 176 by 1999.