South on Highway 5 or 805 to the San Ysidro Border Crossing. After crossing the border, stay in the second lane from the right until you pass the the first off ramp to Tijuana, then get in the far right lane. Follow the signs that say "Rosarito Beach, Ensenada Scenic Route". This road will take you along the Mexico/U.S. border (as you start up the hill you can to see San Diego to your right). When you come down the big hill, take the first off ramp on the right , ("Rosarito Beach, Ensenada Scenic Route") then get in the left lane. You will pass an off-ramp saying "Tijuana Playas" on the right. Staying to the left will put you on the toll road. Tolls are 24 pesos / $2.15 Dlls ea. There are two tollbooths in total. The first tollbooth is just past the TJ Playas off ramp. Second is about 15 miles south just passing the last Rosarito Beach off-ramp. Bajamar is located just past puerto La Selenas on the right side. Exit the highway at Bajamar and enter throught the main gate.