Complex sentence: The ramp from south I-5 to Camino del Rio opened in February 1968, and a second ramp from southbound I-5 to eastbound I-8 opened in August 1968, with the remainder of the project to be completed in summer 1969.
Split into simpler sentences: The ramp from south I-5 to Camino del Rio opened in February 1968. A second ramp from southbound I-5 to eastbound I-8 opened in August 1968, with the remainder of the project to be completed in summer 1969.