Complex sentence: The freeway routing was then modified to head north of Interstate 195 to the Route 18 freeway in Colts Neck Township but was ultimately canceled by the late 1970s due to environmental and financial concerns.
Split into simpler sentences: The freeway routing was then modified to head north of Interstate 195 to the Route 18 freeway in Colts Neck Township. However, it was ultimately canceled by the late 1970s due to environmental and financial concerns.