|
Key Facts |
Bridge Name | Type | Road | Location | City | Crossing |
| Johnson Slagle Road Bridge | Truss | Johnson Slagle Road | Shelby County, OH | Port Jefferson | Great Miami River |
|
Technical Facts |
|
Construction Date |
Rehabilitation Date | Total Length (Estimate) | Span Length (Estimate) | Roadway Width | Builder |
| 1882 | 1974 | 376 Feet | 188 Feet | 16.08 Feet | Morse Bridge Company, Youngstown, Ohio |
The total length given in the National Bridge Inventory at www.nationalbridges.com appeared to be too short for a two-span bridge, and I am guessing by mistake it was listing span length. So I doubled it and listed that as the total length, and noted that the length was an estimate in the Technical Facts table.
This bridge features a number of designs that the Morse Bridge Company did on some of their bridges, and as such is similar to the Six Mile Creek Road Bridge back in Michigan. While the top of the portal bracing is quite different (and unusual) on Six Mile Creek Road, the bottom corner portions of the portal bracing is the same design. Both bridges also share the similarity in that there is no sway bracing, and only large diagonal bracing is present overhead. They also both share unusual connection nuts as well. The Morse Bridge Company must have had different designs for buyers to choose from or something however. The Johnson Slagle Road Bridge is an 1882 bridge, while Six Mile Creek Road Bridge is an 1896 bridge, yet the Sulpher Heights Hill Road Bridge, also in Shelby County, is an 1886 Morse Bridge Company Bridge and looks totally different that both of the others.
This bridge is a pin connected Pratt through truss, and is a two-span structure. Each span is composed of eight panels. The deck is typical of Ohio, with a wooden deck and a layer of asphalt forming the wearing surface. There is v-lacing on the vertical members, and the portal bracing is a lattice design. Original railings do not remain on the bridge, and have been replaced with modern Armco railings. The bridge sits on stone abutments and piers, parts of which have been faced with concrete.
