Description
The 6-Lane Alternative will include six lanes (two outer general purpose lanes and one inside HOV lane in each direction).
6-Lane with Montlake Interchange likely cost: $3.9 billion
6-Lane with Pacific Interchange likely cost: $4.38 billion
SR 520 will be rebuilt from I-5 to 108th Avenue Northeast in Bellevue, with an auxiliary lane added on SR 520 eastbound east of I-405 to 124th Avenue Northeast. Both the Portage Bay and Evergreen Point bridges will be replaced.
Overpasses along SR 520 will also be rebuilt.
Roadway shoulders will meet current standards (10-foot inside shoulder and 10-foot outside shoulder).
A 14-foot-wide bicycle/pedestrian path will be built along the north side of SR 520 through Montlake and the Evergreen Point Bridge and along the south side of SR 520 through the Eastside to 96th Avenue Northeast.
Noise walls will be built along much of SR 520 in Seattle and the Eastside.
This alternative will include stormwater treatment and electronic toll collection.
This alternative will also add five 500-foot-long lids to be built across SR 520 to reconnect communities along SR 520: Roanoke, North Capitol Hill, Portage Bay, Montlake, Medina, Hunts Point, Clyde Hill, and Yarrow Point. The lids will be located at 10th Avenue East and Delmar Drive East, Montlake Boulevard, Evergreen Point Road, 84th Avenue Northeast, and 92nd Avenue Northeast.
The floating bridge pontoons of the Evergreen Point Bridge will be sized to carry future high capacity transit. The alternative does not include an HCT alignment.
A flexible transportation plan (FTP) will provide funding to promote alternative modes of travel and increase the efficiency of the system, including intelligent transportation and technology, traffic systems management, vanpools and transit, education and promotion, and land use as demand management.
Return to Current Plans4-Lane Alternative |
No Build Alternative |
What happened to the 8-Lane Alternative?