Mammoth, Arizona

SMARR--Tucson Wash Trestle (Pinal County, Arizona)
Timber stringer bridge over Tucson Wash on (former) Sam Manuel Arizona Railroad
Rail line extremely inactive, may be considered all but abandoned

SMARR-Mammoth Wash Trestle (Pinal County, Arizona)
Timber stringer bridge over Mammoth Wash on (former) San Manuel Arizona Railroad
Line seldom used of late, may be considered all but abandoned