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Pollocks Mill Bridge

   
                  


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Bridge Documented: 2006 and July 11, 2009
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Key Facts
Bridge Name Facility Carried / Feature Intersected Location Structure Type Construction Date and Builder/Engineer
Pollocks Mill Bridge
Mahle Road (Pollocks Mill Road) Over 10 Mile Creek Rural: Greene County, Pennsylvania Metal 11 Panel Pin-Connected Whipple Through Truss, Fixed 1878 By Builder/Contractor: Massillon Bridge Company of Massillon, Ohio
Technical Facts
Rehabilitation Date Main Span Length Structure Length Roadway Width Main Spans NBI Number
1918 160 Feet (48.8 Meters) 162 Feet (49.4 Meters) 15 Feet (4.6 Meters) 1 307213059720220

Historic Significance Rating (HSR)

Primary Photographer(s): Nathan Holth and Rick McOmber

View Archived National Bridge Inventory Report - Has Additional Details and Evaluation

This bridge is an eleven panel pin connected through Whipple truss. This bridge is among the oldest metal truss bridges in Pennsylvania, with an 1878 construction date. The bridge was built by the Massillon Iron Bridge Company. Any metal truss bridge dating from earlier than 1880 is very old, and if it retains even decent integrity is highly significant. This bridge retains a great deal of historic integrity, and further documents a rare example of a Massillon Iron Bridge Company Whipple truss displaying the unique details of that company. The portal bracing of this bridge deserves special note, because it the portal uses a special pole webbing design that was practically Massillon's signature detail during the 1870s. The use of these poles can be seen in the Longman Road Bridge (in the trusses) as well as the Junction Road Bridge (in the top chord), both of Preble County, Ohio. The Pollocks Mill Bridge features large stone abutments, which at one end have extensive wingwalls. The floorbeams and deck were replaced in 1990, suggesting that perhaps someone didn't feel like demolishing it at the time.

This bridge should receive an extremely high priority for preservation, and rehabilitation should be scheduled for this bridge. Rehabilitation should take great care to maintain the excellent historic integrity this bridge enjoys.

The Historic Bridge Inventory's narrative is on-target, and and the historic significance of this bridge is recognized. Also, the survey folks at Lichtenstein apparently have an occasional sense of humor, as indicated in their discussion of the surrounding area!

Information and Findings From Pennsylvania's Historic Bridge Inventory

Discussion of Bridge

The 163' long, pin-connected Double Intersection Pratt (Whipple) truss built in 1878 is supported on ashlar abutments with stepped wingwalls. The trusses exhibit many early details including rolled I sections with cover plates riveted to the flanges and cast chafing guards/guides for the diagonals. The counters pass through openings in the web of the verticals. Pin plates riveted to the ends of the verticals facilitate connections at the panel points. In 1990 the original floorbeams were replaced with new steel I beams, and the timber stringers were replaced in kind, otherwise the bridge is remarkably complete. This early bridge is historically and technologically significant.

Discussion of Surrounding Area

The bridge carries 1 lane of an unimproved township road over a stream in a sparsely developed, forested area. Just east of the bridge is an overpass carrying a branch of the Monongahela RR over TR 597. No buildings are near the bridge, just a dead, mutilated deer carcass,-- charming.

Bridge Considered Historic By Survey: Yes

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Photos and Videos: Pollocks Mill Bridge

Available Photo Galleries and Videos

Click on a thumbnail or gallery name below to visit that particular photo gallery. If videos are available, click on a video name to view and/or download that particular video.

 
View Photo Gallery 2009 Bridge Photo-Documentation
Original / Full Size Photos
A collection of overview and detail photos, taken July 11, 2009. For the best visual immersion and full detail, or for use as a desktop background, this gallery presents the photos for this bridge in the original digital camera resolution.
View Photo Gallery 2009 Bridge Photo-Documentation
Mobile Optimized Gallery
A collection of overview and detail photos, taken July 11, 2009. View the photos for this bridge in a reduced size which is useful for mobile/smartphone users, modem (dial-up) users, or those who do not wish to wait for the longer download times of the full-size photos. Alternatively, view this photo gallery using a popup slideshow viewer (great for mobile users) by clicking the link below.
Browse Gallery With Popup Viewer
View Photo Gallery 2006 Bridge Photo-Documentation
A collection of overview and detail photos, taken 2006. This photo gallery contains a combination of Original / Full Sized photos and Mobile/Smartphone Optimized (Reduced Size) photos. Alternatively, view this photo gallery using a popup slideshow viewer by clicking the link below.
Browse Gallery With Popup Viewer

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