Pennsylvania State Route 29 is a north-south in Northeastern Chester County. It runs from U.S. Rt. 30 at Malvern, to the Chester/Montgomery County Line, near Mont Clare. PA St Rt 29 passes through the following towns in Chester County. Malvern Devault Aldham Phoenixville PA St Rt 29 is not multi-plexed in Chester County. PA St Rt 29 intersects the following highways in Chester County. U.S. Rt. 30, at Malvern. U.S. Rt. 202, at Malvern. Interstate 76, at Devault. Pennsylvania Turnpike, at Devault. Pennsylvania State Route 23, at Phoenixville.