THOMAS VIADUCT 8020 BALTIMORE NATIONAL PIKE
ELKRIDGE, MARYLAND 21227 -USA
Location: West of U.S. 1 to Levering Ave.
2nd Phone: 410-796-4282
Web Site: http://www.clark.net/pub/jltoth/rr_museums.html#THOMV
Comments/Directions: A granite bridge built in 1832 consisting of 8 elliptical arches 60 feet high and 612 feet long spans the Patapsco River from Baltimore County to Howard County.