MP: 0 Location: S 21st St and Pacific Ave, Tacoma Proceed straight over the Thea Foss Waterway on the cable bridge for SR 509   MP: .48 Location: Portland Ave and SR 509, Tacoma Reassurance shield after the cable bridge   MP: 1.94 Location: S Frontage Rd and Port of Tacoma Rd, Tacoma Stay in … Continue reading State Route 509, I-705 to SR 99