Replace caps, stringers, decking and pavement on 3 span timber bridge (20c0384, on Scouts Camp Road ); replace the caps, stringers, deck, railing and back wall and pavement of a 4 span timber viaduct (20c0450, on Starrett Hill Road); replace the caps, stringers, deck, railing and back wall and pavement of a 2 span timber viaduct (20c0385, on Pacific Avenue); and replace the caps, stringers, deck, railing and back wall and pavement on a two span timber viaduct - (20c0386, on Pacific Avenue).