Marion County Department of Public Works Share: Government Agencies Marion County Department of Public Works Visit Website Request Info 5155 Silverton Rd NE Salem, OR 97305 (503) 588-5036 (503) 588-7970 (fax) Rep Info Map Whom to Contact Brian Nicholas, P.E. 5155 Silverton Rd NE Salem, OR 97305 What's Nearby? Distance: 5 10 15 20 25 50 mi.