State Route 7 (SR 7) is a state highway in the U.S. state of California, running from the U.S.-Mexico border east of Calexico north to its terminus at Interstate 8 (I-8), where Orchard Road continues the route north towards Holtville. The route provides convenient access to the country of Mexico from I-8. The southern portion of the route opened in 1996, and the rest of the route connecting to I-8 opened in 2005.SR 7 is part of the California Freeway and Expressway System, and is built to expressway standards. The highway begins at the Calexico East Border Station, which is open from 6 am to 10 pm, seven days a week. Just north of the border, the highway splits into two roads to pass through the customs checkpoints before the two roads merge back together; the fork to the west is for cars, and the fork to the east is for commercial vehicles. SR 7 takes the western fork, which passes over the other fork at the northern end and merges into that highway.