30 degrees Fahrenheit), the old bridge was replaced by a deck girder bridge which was completed in 1995. Thus, eventually it was closed, demolished, and replaced, ending a unique chapter in American bridge history. Current bridge at location The current Coraopolis-Neville Island Bridge at this location (OB02) was built in 1994 and completed in 1995. This steel deck girder bridge spans the back channel of the Ohio River between Coraopolis, Pennsylvania, and Neville Township, Pennsylvania. The main span is approximately , and the height of the deck is approximately . See also List of bridges documented by the Historic American Engineering Record in Pennsylvania Three Sisters Bridges Notes The town Coraopolis (and therefore the bridge) are sometimes referred to as Corapolis, that is, missing the 'O' between the 'A' and 'P', which can make searches somewhat difficult. For example, the HAER material is indexed this way although the HAER article text uses the spelling with the 'O'. The trusses are conflictingly referred to in different sources as "Bowstring", "Pennsylvania" or "Pratt". Pratt is the most common name. Bowstring may refer to the shape of the bridge, it has some resemblance to a bow, with the roadway as the string (in this particular truss design instance, the members at the road level are eyebar, as can be seen in the belowdeck illustration, above, and thus are in tension only, which also may be why it's named that way) This tension only, pin joint construction is the major factor making the move difficult. The HAER (Historic American Engineering Record) report gives an extensive history of the various bridges at the 6th street site, and of this bridge once moved. It is available in .tif form at external link #4, but Bruce S. Cridlebaugh of pghbridges.com has already scanned the text in. This text is available at external link #5. The HAER (Historic American Engineering Record) report gives an extensive history of the various bridges at the 6th, 7th and 9th street sites, and some info on this bridge once moved. It is available in .tif form at external link #6, but Bruce S. Cridlebaugh of pghbridges.com has already scanned the text in. This text is available at external link #7. This image shows the removal and barge loading process. This image (both from the pghbridges.com site) shows a truss loaded on the barge and being moved. The top chord has been disassembled