Specifications include, but are not limited to: • Constructing the SR 509 mainline from I-5 to the 28th/24th Avenue S. interchange, including the ramps to 28th/24th Avenue S, a toll point on SR 509 and constructing the northbound SR 509 undercrossing tunnel of I-5 • Reconstructing the SR 516 interchange (includes constructing the new Veterans Drive undercrossing of I-5) • Constructing a northbound auxiliary lane from I-5/SR 516 interchange to the new I-5/SR 509 interchange • Constructing a southbound auxilliary lane from S 200th interchange on-ramp to the SR 516 off-ramp • Constructing the new southbound collector distributor from the I-5/SR 509 interchange to the I-5/SR 516 interchange • Reconstructing the 216th Street bridge • Restoring S. 208th Street’s connection to SR 99 • Constructing approximately 34,000 square feet of new bridge