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Harmony Road Bridge

Frederick County, Maryland

Photos 

Photo taken by Historic American Engineering Record

View photos at Library of Congress

BH Photo #161052

Map 

Street View 

Facts 

Overview
Lost Half-hip Pratt pony truss bridge over Little Catoctin Creek on Harmony Road
Location
Myersville, Frederick County, Maryland
Status
Replaced by new bridge
History
Built 1918; replaced 2000
Builder
- M.D. Porman of York, Pennsylvania
Design
Pin-connected, 4-panel Pratt pony truss
Dimensions
Length of largest span: 61.0 ft.
Total length: 63.0 ft.
Deck width: 12.8 ft.
Approximate latitude, longitude
+39.48227, -77.53487   (decimal degrees)
39°28'56" N, 77°32'06" W   (degrees°minutes'seconds")
Approximate UTM coordinates
18/281984/4373363 (zone/easting/northing)
Quadrangle map:
Middletown
Average daily traffic (as of 2009)
1,022
Inventory number
BH 44774 (Bridgehunter.com ID)
Inspection report (as of July 2017)
Overall condition: Good
Superstructure condition rating: Very Good (8 out of 9)
Substructure condition rating: Very Good (8 out of 9)
Deck condition rating: Good (7 out of 9)
Sufficiency rating: 91.1 (out of 100)
View more at BridgeReports.com

Categories 

Built 1918 (504)
Built during 1910s (10,078)
Frederick County, Maryland (106)
HAER documented (1,132)
Half-hip Pratt pony truss (603)
Have street view (29,912)
Lost (30,060)
Lost 2000 (414)
Lost during 2000s (4,440)
M.D. Porman (2)
Maryland (870)
 Myersville, Maryland (1)
Owned by county (21,726)
Pony truss (17,240)
Pratt pony truss (4,028)
Pratt truss (10,547)
Replaced by new bridge (20,459)
Span length 50-75 feet (10,551)
Structurally deficient (12,755)
Total length 50-75 feet (9,726)
Truss (36,820)

Update Log 

  • August 16, 2010: New Street View added by Matthew Lohry
  • April 4, 2010: Added by Robert Stephenson

Sources 

  • Robert Stephenson - seinfeld99 [at] yahoo [dot] com
  • HAER MD-120 - Harmony Road Bridge, Harmony Road spanning Little Catoctin Creek, Myersville vicinity, Frederick County, MD
  • Matt Lohry
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Comments 

Harmony Road Bridge
Posted August 16, 2010, by Matthew Lohry

It's too bad that this bridge didn't make the very lengthy Frederick County rehabilitation list; although there are still a very impressive number of truss bridges here rehabilitated during the otherwise very destructive era of the late '90's for truss bridges in other states and counties. It appears as though Frederick County is the champion and sets a great example of historic bridge preservation for everyone else to follow. I just wish that others would follow suit...