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. The groundbreaking for the Ocean Beach Freeway took place on September 23, 1968, with the estimated completion to take place within 15 months. However, rain in February 1969 delayed many construction projects across the county, including the SR 109 extension. The entire project was completed in September, with the road scheduled to open in October. The routing of SR 109 was officially added to I-8 in 1972.