30th Street Station is located at 30th and Market and ISI is located between 34th and 36th Streets on Market. To reach ISI by Septa Train, exit the 30th Street Station and follow the signs to the 30th Street Septa Entrance. Go down the stairs. Wait for a Westbound train and exit at 34th Street Septa Stop. ISI is in the middle of the block that is on the North-West corner of Market and 34th.
Cabs are also available from both the East and West Entrances to the station.
The taxis line up and take the next passenger. From the Pennsylvania Turnpike to ISI Estimated drive time of trip is 25 minutes. Take the Pennsylvania Turnpike to the Valley Forge Exit. Follow the signs for 1-76 East and merge onto it. Look for the Spring Garden Exit ramp.