A woman from Oskaloosa was found dead Sunday (5/9) off the shoulder of Interstate 35 in West Des Moines.  West Des Moines Police were called shortly before noon to I-35 near mile marker 70.5, just north of Mills Civic Parkway.  A passerby noticed what appeared to be a body just off the shoulder of the interstate.  The victim has been identified as 38-year-old Stephanie Waddell of Oskaloosa.  West Des Moines Police say their preliminary investigation indicates Waddell may have been hit by a vehicle during the overnight hours of May 8 into May 9.