|
 |
|
| Key Facts |
| Bridge Name | Facility Carried / Feature Intersected | Location | Structure Type | Construction Date and Builder/Engineer | |
|---|---|---|---|---|---|
|
Maclay's Mill West Bridge
| Maclays Mill Road (PA-4018) Over Conodoguinet Creek | Rural: Franklin County, Pennsylvania | Stone Segmental Deck Arch, Fixed | 1827 By Builder/Contractor: Silas Harry of Chambersburg, Pennsylvania |
| Technical Facts |
| Main Span Length | Structure Length | Roadway Width | Main Spans | NBI Number |
| 30.8 Feet (9.4 Meters) | 102 Feet (31.1 Meters) | 16.4 Feet (5 Meters) | 3 | 28401800700000 |
This bridge is the larger of two ancient stone arch bridges on this section of road. The bridges are significant for their very old construction dates, and for their good historic integrity. Be sure to review the Historic American Engineering Record documentation for a detailed discussion.
The bridges were built by Silas Harry. A number of the oldest stone arch bridges in Pennsylvania and Maryland are attributed to Silas Harry indicating that he was a prolific builder, and also built structures designed to stand the test of time.
Information and Findings From Pennsylvania's Historic Bridge InventoryDiscussion of Bridge The 3-span, 102'-long stone arch bridge is listed in the National Register. It is one of a pair of bridges at this crossing (28 4018 0062 0000) known as McClays Twin Bridges. There has been no change in the bridge's status since the previous survey. The bridge has dressed voussoirs, bullnose piers, and fieldstone spandrel walls and wingwalls with parapets. Alterations prior to the previous survey include grapevine repointing and pargetted intrados. Discussion of Surrounding Area The bridge carries a 2 lane road over a stream in a rural area of active farms. Bridge Considered Historic By Survey: Yes |
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.
|
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 |
© Copyright 2003-2013, HistoricBridges.org. All Rights Reserved. Disclaimer: HistoricBridges.org is a volunteer group of private citizens. HistoricBridges.org is NOT a government agency, does not represent or work with any governmental agencies, nor is it in any way associated with any government agency or any non-profit organization. While we strive for accuracy in our factual content, HistoricBridges.org offers no guarantee of accuracy. Information is provided "as is" without warranty of any kind, either expressed or implied. Information could include technical inaccuracies or errors of omission. Opinions and commentary are the opinions of the respective HistoricBridges.org member who made them and do not necessarily represent the views of anyone else, including any outside photographers whose images may appear on the page in which the commentary appears. HistoricBridges.org does not bear any responsibility for any consequences resulting from the use of this or any other HistoricBridges.org information. Owners of bridges have the responsibility of correctly following all applicable laws, rules, and regulations, regardless of any HistoricBridges.org information.
