Complex sentence: In 1942 the Millers' son, "Tuck", and family moved in with the senior Millers; at this time, the street was just a gravel road and did not extend out to Route 43.
Split into simpler sentences: In 1942 the Millers' son, "Tuck", and family moved in with the senior Millers. The street was just a gravel road then and did not extend out to Route 43.