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B&O - Patterson Bollman Bridge

Photos 

B&O Patterson Bollman Bridge

View of Bollman truss from up-river before 1900

View this photo at sahale.com

BH Photo #269334

Map 

Description 

The predecessor Patterson Viaduct was almost totally destroyed in an 1868 flood. A single-span Bollman Truss built into the west abutment in 1869 incorporated the original roadway arch and upstream wing wall. The Bollman design was supplanted by another bridge before the railroad was realigned about 400 feet (120 m) upstream in 19021903 with the opening of the Ilchester Tunnel.

Facts 

Overview
Lost Bollman through truss bridge over Patapsco River on Former Baltimore & Ohio Railroad
Location
Ilchester, Howard County, Maryland, and Baltimore County, Maryland
Status
Replaced by a new bridge
History
Built 1869 atop washed-out ruins of Patterson Viaduct, replaced 1902-03 by line realignment
Builder
- B&O Mount Clare Shops of Baltimore, Maryland
Railroad
- Baltimore & Ohio Railroad (B&O; BO)
Design
Bollman through truss
Approximate latitude, longitude
+39.24914, -76.76473   (decimal degrees)
39°14'57" N, 76°45'53" W   (degrees°minutes'seconds")
Approximate UTM coordinates
18/347721/4345908 (zone/easting/northing)
Quadrangle map:
Savage
Inventory number
BH 58595 (Bridgehunter.com ID)

Update Log 

  • October 4, 2014: New photos from Patrick S. O'Donnell
  • October 29, 2013: Added by Alexander D. Mitchell IV

Related Bridges 

Sources 

  • Alexander D. Mitchell IV
  • Patrick S. O'Donnell - 1 [dot] 991km [at] comcast [dot] net