Weekend drivers can expect delays as crews scramble to finish another section of the SR 16 Nalley Valley Project.
Beginning Sunday night, May 8, and into Monday morning, traffic from northbound I-5 headed to westbound SR 16 will shift onto a temporary roadway. Crews will reduce the off-ramp from two lanes to one and lower the speed from 35 to 15 mph.
Drivers can expect backups of up to three miles as they approach the SR 16 interchange during peak morning and afternoon commutes, said Washignton State Department of Transportation officials.
The shifts are part of a multi-million dollar project, which began January 2009, aimed to relieve traffic congestion and create a safer thoroughfare. Last month, the heavily used on-ramp from 38th Street to northbound I-5 and SR 16 closed, allowing crews to to continue rebuilding the Nalley Valley Viaduct.
The traffic shift and ramp closure are the last major impacts before the route improvements are completed this June.
The portion of the southbound Sprague Avenue to eastbound SR 16 ramp will not reopen until 2013.