Existing Bridge Key Number 29355 is in Idaho County and carries Mother Lode Road over
the American River. The bridge is owned and maintained by Idaho County and is located
approximately 1.6 miles south of Elk City, Idaho. This proposal is for the contractor to
Remove the existing truss bridge with concrete foundations and replace it with a singlespan
prestressed concrete girder bridge on concrete abutments with driven piles. The road
will be closed during construction and traffic will be detoured. Additional work includes
roadway approach construction and permitted stream alterations including placing riprap.