The Hayden Bridge is a single span double intersecting Pratt truss resting on granite slabs set in concrete abutments. The truss is wrought iron except for the connections and ornamentations, which are cast iron. The span is 224.0 feet long. The outside width is 19.5 feet with an inside horizontal clearance of 18 feet. The inside vertical clearance is 14.0 feet and the outside height is 35.0 feet. The deck is 70.0 feet over the river bed at center.
The Hayden Bridge includes two features that were milestones in the wrought iron period of American bridge building: The Whipple-Murphy truss and the Phoenix column.
(HAER OR-12, Hayden Bridge)
Span length: 224.0 ft.
Total length: 224.0 ft.
Deck width: 18.0 ft.
Vertical clearance above deck: 14.0 ft.
Eligible for the National Register of Historic Places
SP - McKenzie River Bridge
McKenzie River Railroad Bridge
Approximate latitude, longitude
+44.07194, -122.96417(decimal degrees) 44°04'19" N, 122°57'51" W (degrees°minutes'seconds")