Know Before You Go
This site is on Lehigh University's campus, so parking on-campus poses some difficulty without a parking pass, and there really aren't any parking areas near the sculpture park anyway. Your best bet is to park at the bottom of campus where there are metered spots, and walk up Upper Sayre Park Road to where it meets Look Out Drive. At that point, there will be a gravel path to your right that leads you to the park. Parking can also be found at South Mountain Park (search for it on Google Maps to find its location in proximity to the sculpture park); from South Mountain Park, turn right on Mountain Drive North and follow it down to Upper Sayre Park Road. Whichever route you walk, be very careful as there is no sidewalk and traffic moves very fast, especially on Mountain Drive North.
If you park at the metered spaces at the bottom of the hill you can take a campus shuttle bus to the trail that leads to the garden.There are no parking restriction signs along Upper Sayre Park Rd. You can park at the start of the trail that leads to the garden. Just be sure your car is entirely on the shoulder and that you're not blocking the gate.