Bridgehunter.com | Thomas Viaduct

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Photos

Aerial View Looking Southeast

Photo taken by Historic American Engineering Record

View photos at Library of Congress

Map

Street Views

Description

The Thomas Viaduct was the first masonry arch bridge built on a curve and remains the largest of its type. Built by the Baltimore & Ohio it remains in use by B & O successor line CSX.

Facts

Overview: Eight-span stone arch bridge over Patapsco River on the B&O Railroad between Relay and Elkridge
Location: Howard County, Maryland, and Baltimore County, Maryland
Status: Open to traffic
History: Built 1835
Builder: - Benjamin Henry Latrobe, Jr.
Design: Stone arch
Dimensions: Total length: 612.0 ft.
Recognition: Posted to the National Register of Historic Places
Approximate latitude, longitude: +39.22192, -76.71317 (decimal degrees)
39°13'19" N, 76°42'47" W (degrees°minutes'seconds")
Approximate UTM coordinates: 18/352113/4342801 (zone/easting/northing)
USGS topographic map: Relay
Inventory numbers: NRHP 66000388 (National Register of Historic Places reference number)
BH 42365 (Bridgehunter.com ID)

Update Log

September 26, 2012: New photos from Jann Mayer
August 17, 2012: Updated by Daniel Hopkins: Added category "Railroad"
October 2, 2010: Updated by Ed Hollowell: Added discription.
April 19, 2009: Posted HAER photos

Sources

HAER MD-3 - Baltimore & Ohio Railroad, Thomas Viaduct, Spanning Patapsco River, Elkridge, Howard County, MD
Ed Hollowell - erhollowell [at] aol [dot] com
Wikipedia
Jann Mayer - jannmayer [at] gmail [dot] com

Thomas Viaduct