Complex sentence: Between 1967 and 1985, NY 23 was realigned onto its modern routing south of Hudson while the westernmost portion of NY 23 was moved onto its present routing from Cincinnatus to North Pharsalia between 1985 and 1989.
Split into simpler sentences: Between 1967 and 1985, NY 23 was realigned onto its modern routing south of Hudson. The western portion of NY 23 was moved onto its present routing from Cincinnatus to North Pharsalia between 1985 and 1989.