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Flintville Bridge


View Of Bridge In Context From Downstream. Looking East

Photo taken by Rob Tucher for the Historic American Engineering Record

View photos at Library of Congress

BH Photo #310408


Flintville Bridge is a representative example of an early twentieth-century riveted steel Pratt-type through-truss bridge with plat girder deck approach spans. It replaced a covered bridge inundated by the construction of the Conowingo Dam across the Susquehanna River in 1927. The two truss spans of the Flintville Bridge were salvaged from the former Conowingo Bridge, built in 1909 (U.S. Route 1) across the Susquehanna, prior to its inundation. Route 1 was relocated to run across the top of the dam.

-- Historic American Engineering Record


Lost Pratt through truss bridge over Broad Creek on Flintville Road
Harford County, Maryland
Replaced by a new bridge
Built 1927; Replaced 1998
Pratt through truss
Approximate latitude, longitude
+39.69599, -76.24487   (decimal degrees)
39°41'46" N, 76°14'42" W   (degrees°minutes'seconds")
Approximate UTM coordinates
18/393267/4394756 (zone/easting/northing)
Quadrangle map:
Conowingo Dam
Inventory number
BH 65042 (Bridgehunter.com ID)


Built 1927 (892)
Built during 1920s (10,255)
Deck girder (6,299)
Girder (11,163)
Harford County, Maryland (36)
Lost (28,381)
Lost 1998 (437)
Lost during 1990s (4,140)
M-frame portal (88)
Maryland (826)
Plate girder (8,719)
Pratt through truss (6,044)
Pratt truss (10,279)
Replaced by new bridge (19,300)
Riveted (2,507)
Through truss (16,707)
Truss (35,373)

Update Log 

  • December 26, 2014: Added by Dave King

Related Bridges 


  • Dave King - DKinghawkfan [at] hotmail [dot] com
  • HAER MD-125 - Flintville Bridge, Spanning Broad Creek at Flintville Road (Maryland Route 623), Castleton, Harford County, MD