Complex sentence: It also largely parallels SR 400 from here, travelling through Sandy Springs and into Roswell, crossing the Chattahoochee River, and has reversible lanes up to its intersection with SR 120.
Split into simpler sentences: It also largely parallels SR 400 from here. Continuing north, SR 9 crosses the Chattahoochee River, and has reversible lanes up to its intersection with SR 120.