1. Put Lewes into https://www.google.com/maps 2. Click 'Directions'. 3. Use the arrows to the right of the boxes to put Lewes in the first box on the left. 4. Put West Palm Beach into the second box. 5. When the I-95 route shows, click 'Options' (in blue, just above the route directions). 6. Under 'Avoid' check 'motorways/freeways/interstates' (wording varies according to where you are accessing the site). 7. If you follow the instructions above you'll get two route options which do not include any interstates. Distance and travel times are, obviously, slightly longer than using the I-95.