Among the most unique surviving metal truss bridges in the United States is this inverted bowstring through truss. Because of the manner in which the chords of the truss are arranged, the deck is technically suspended from the truss system. The unusual truss design gives this bridge an appearance that is immediately recognizable as something unusual. The vertical end posts add to the unusual appearance.
Visually, the bridge is enhanced by its decorative cast iron finials, cast iron portal knee braces, and ornamental builder plaque.
An interesting structural detail on this bridge is how the end posts rest on cast iron shoes.
The bridge is the only known all-metal inverted bowstring through truss. There is a hybrid wood/iron covered bridge a short distance north of this bridge however. Visit Bridgehunter to learn more about that, since HistoricBridges.org does not "cover" covered bridges...
A lot of websites and documentations of this bridge list the name of this bridge by the somewhat awkward name of "John Bright Number 1 Iron Bridge." The bridge originally came from Havensport Road over Poplar Creek near Carroll, Ohio. The name "Havensport Road Bridge" is more representative of the bridge's origins. It was relocated here on the Ohio University-Lancaster campus in 1986 or 1999 depending on what website you look at. It has been rehabilitated for pedestrian use.
The end posts on this bridge have been removed and replaced with modern welded substitutes. It is a real mystery with this bridge: why were the end posts were not replaced in-kind with proper replicas, composed of riveted built-up beams. As vertical end posts, they are the first thing a visitor sees walking up to the bridge and are one of the most visible components on the bridge. And their plain, all-welded construction not only scream of modernity, they look profoundly out of place on the bridge. HistoricBridges.org recommends that future work on this bridge should replace the end post with riveted replicas. It would greatly improve the visual appearance of the bridge, to say nothing of the improvement in historical authenticity.
Information and Findings From Ohio's Historic Bridge Inventory
The bridge carries a pedestrian trail over a stream on the campus of Ohio University Lancaster. The bridge is located in a casually landscaped campus setting and provides access to recreational fields.
The wrought-iron bridge is a suspension truss design, sometimes referred to as an inverted bowstring, with the deck suspended from the truss. The 9-panel bridge has a built-up upper chord and verticals and eyebar lower chord and diagonals. The upper-lateral bracing is a T-shaped section. The end posts are composed of welded plates and channels and do not appear to be original, although the posts do appear to bear on original cast-iron shoes. The bridge is supported on concrete abutments.
Relocated ca. 1986 and rehabilitated. Truss lines appear to be original with the exception of the welded end posts. Decking and flooring system is not original.
Summary of Significance
The John Bright No. 1 Iron Bridge is NR Listed (1978). It was relocated ca. 1986 from its original location on Havensport Road to the campus of Ohio University Lancaster where it now serves as a pedestrian trail. The bridge was rehabilitated and maintains excellent integrity to continue to convey its significance as a rare bridge type/design.From HAER OH-44" The John Bright No. 1 Iron Bridge was built by the Hocking Valley Bridge Works (HVBW) of Lancaster, Ohio, probably in 1884-5. It is one of a relatively small number of surviving bridges to have been built by this local firm. The suspension truss design is very unusual, and is only known to have been used in a few bridges in Ohio by three bridge builders. There are some similarities in this bridge to several patented designs, but it most closely resembles Archibald McGuffie's 1861 patent for "Improvement in Construction of Bridges." The bridge is very similar in design to the nearby John Bright Covered Bridge (see HAER No. OH-45, 14XXX16). The two bridges illustrate the transition from timber to all-metal construction. The John Bridge No. 1 Iron Bridge was listed on the National Register of Historic Places in 1978.
The bridge is a very rare type/design that has an exceptional level of significance.
Bridge Considered Historic By Survey: Yes
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