 The route reaches its eastern terminus at an intersection with the eastbound direction of PA 462 at West King Street to the west of downtown Lancaster.The eastern section of PA 999 runs along the Manor Road, which was constructed in 1742.On March 13, 1839, the Manor Turnpike Road Company was chartered to build a turnpike running from West King Street in Lancaster southwest to the Little Conestoga Creek near Millersville along the Manor Road.