National Register of Historic Places in Amador County
Five Mile Drive Bridge is pre-dated by only one other bridge in Amador County.
The Pratt half-hip is a common design nationally; it was much less popular than the standard Pratt in northern California. Surviving examples are rare because many were very light pony trusses that were replaced years ago.
The structure has remained relatively unchanged since the date of construction, except for the minor addition of cross bracing in the upper chord. The age, rarity, unusual size for the type of truss, unusual design features discussed below, and the local designer make this bridge a significant structure.
Extracted from the NRHP nomination.
The old bridge was replaced, and the historic truss lies in a field beside Five Mile Drive.