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Hilltown Bridge

Churchill Road Bridge

   

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Bridge Documented: July 3, 2006

Primary Photographer(s): Nathan Holth

This Bridge No Longer Exists!

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Key Facts

	Bridge Name	Facility Carried / Feature Intersected	Location	Structure Type	Construction Date and Builder/Engineer
X	Hilltown Bridge Churchill Road Bridge	Churchill Road Over Mahoning River	Rural: Lawrence County, Pennsylvania	Metal 9 Panel Pin-Connected Pratt Through Truss, Fixed	By Builder/Contractor: Unknown and Engineer/Design: Thomas Gilkey

Technical Facts

Rehabilitation Date	Main Span Length	Structure Length	Roadway Width	Main Spans	NBI Number
1914	153 Feet (46.6 Meters)	282 Feet (86 Meters)	15.4 Feet (4.7 Meters)	2	37720403247013

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

This historic bridge was demolished and replaced in 2007!

Despite the fact that Pennsylvania has lots of large rivers, as well as lots of metal truss bridges compared to other states like Michigan, the number of remaining multi-span pin connected Pratt through truss bridges has dwindled to an alarming low. As such, the preservation of this bridge should have been pursued. This bridge had two spans of differing age. The span at the north end of the bridge appeared to be much older, based on the lightweight members. The southern end was dated 1913 by the plaque, and although it is still a pin connected, the members a a bit more massive typical of a later pin-connected truss bridge.

Someone had made off with the "elaborate scroll-design fill" that the historic bridge inventory entry mentioned by the time HistoricBridges.org documented the bridge in 2006. Oddly, though those appear to have been on the older north span, where empty bolt/rivet holes on that bracing were observed, the Historic Bridge Inventory seemed to think that those were on both spans, which they were not. The Historic Bridge Inventory failed to realize there were two different age and design spans composing this bridge. The north span is unlikely to be a product of this engineer Thomas Gilkey that is shown on the plaque of the newer south span. It is unknown who built the original two-span bridge, of which the northern span appeared to have been a remnant and when. It is likely that some disaster necessitated the replacement of the southern span in 1913.

Also, while the Historic Bridge Inventory shoots down Thomas Gilkey's efforts in Lawrence County, it is worth suggesting an alternative viewpoint that because the newer span of this bridge is associated with Gilkey that it is significant as an example of how bridge design in Lawrence County unfolded in the early 20th century. Because of Gilkey, a local engineer, Lawrence County was building different types of bridges than most places were in the 1910s. Thomas Gilkey also designed the large Mahoning Avenue Viaduct, and the Mill Street Bridge in New Castle, all late examples of pin-connected truss bridges.

Information and Findings From Pennsylvania's Historic Bridge Inventory Discussion of Bridge The 2-span, 282' long and 16' wide, pin connected Pratt thru truss bridge supported on an ashlar substructure was fabricated in 1914. The trusses are traditionally composed, and the floorbeams are framed into the verticals above the eye bar lower chords. The knee braces of the lattice portal braces have an elaborate scroll-design fill. The bridge appears to be complete, but it is an extremely late example of its technology. Mr. Gilkey designed pin connected bridges for the county through the 1920s. The bridge has no innovative or distinctive details, and it is neither historically or technologically significant. Discussion of Surrounding Area The bridge carries a 2 lane road over a stream in a sparsely developed area with scattered 20th century houses. The earliest ones are highly altered, and there are many modern houses. The area does not have historic district potential. Bridge Considered Historic By Survey: No

Photos and Videos: Hilltown Bridge

Available Photo Galleries and Videos

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	Bridge Photo-Documentation Original / Full Size Photos	A collection of overview and detail photos. 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.
	Bridge Photo-Documentation Mobile Optimized Gallery	A collection of overview and detail photos. 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

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