It shall be unlawful to ride a bicycle upon a sidewalk within that area bounded by and including Front Street on the west, save and except the bridges, Cottage Street on the east, Union Street on the north, and Trade Street on the south; provided this subsection shall not apply to three-wheeled bicycles being ridden by a handicapped or elderly person.

https://library.municode.com/or/salem/codes/code_of_ordinances?nodeId=PTIICOOR_TITIXVETR_CH101BI