Rating:
2 votes
BO - Patterson Bollman Bridge
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 1902–1903 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 (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
- Patterson Viaduct Pedestrian Bridge (Successor)
- BO - Patterson Viaduct (Predecessor)
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