Bruce, You can take the 10 east toward Blythe, the take the 86 toward Brawley. Stay on the 86 go to Westmorland, the only 4 way stop in Westmorland is S. Center Street, take a right, you are going south. Take that street, it will turn into Forrester Rd, at least 10 miles to interstate 8. Go west on 8 towards San Diego. Be aware of the border check point the closer you get to Alpine Ca and the 2 lane highway traffic will stop suddenly without warning at times.