James P. Greiner

Matthews Bridge (Baltimore County, Maryland)
Designer/Engineer, 1914
Lost Parker through truss bridge over Loch Raven Reservoir on MD-146 (Dulaney Valley Road)
Replaced by new bridge

Old Paper Mill Bridge (Baltimore County, Maryland)
Designer/Engineer, 1922
Steel through-arch bridge over Loch Raven Reservoir (Gunpowder Falls) on an old alignment of Paper Mill Rd
Closed to all traffic