After MD 175 was rerouted along Little Patuxent Parkway (now named Rouse Parkway) from west of Interstate 95 (I-95) to Columbia Town Center around 1977, MD 108 was extended east to its present terminus near I-95.
MD 175's rerouting along Little Patuxent Parkway led to changes in its route, which then prompted an extension of MD 108 eastward towards I-95.