Home - Construction Updates - San Marcos Segment San Marcos Construction Updates San Marcos Pipeline Construction Begins June 24, 2013: Construction along 9th Street in San Marcos is coming to a close and the construction has begun on Las Flores Drive. Las Flores Drive is closed from June 13 from 5:30 p.m. to 7:00 a.m. Read more. Tue, June 25, 2013 (No comments) « Previous1…345