| Bowstring Truss Bridge | |
| Designated Other1: | Virginia Landmarks Register |
| Designated Other1 Date: | June 19, 2008[1] |
| Designated Other1 Number: | 060-5066 |
| Designated Other1 Num Position: | bottom |
| Location: | I-81, Ironto Rest Area, near Ironto, Virginia |
| Coordinates: | 37.2392°N -80.2244°W |
| Builder: | King Iron Bridge Company, Cleveland, Ohio |
| Architecture: | Tubular arch pony truss |
| Added: | January 2, 2013 |
| Refnum: | 12001136[2] |
Bowstring Truss Bridge, also known as the Roaring Run Bowstring Truss Bridge and King Tubular Arch Truss Bridge, is a historic bowstring truss bridge located at the Ironto Rest Area near Ironto, Montgomery County, Virginia. It was built by the King Bridge Company in 1878, and is a single-span, four-panel tubular arch pony truss. It measures 55feet long, 12feet wide, and 6inchesft6inchesin (ftin) high with an open roadway width of approximately 9inchesft6inchesin (ftin). The bridge was partially disassembled and moved from its original location to a second site during the 1930s, where it remained until moved to its current location in 1977.[3]
The bridge was documented by the Historic American Engineering Record in 1983 and listed on the National Register of Historic Places in 2013.[2]