Commuters who take Interstate 5 through Federal Way can expect delays as a summer-long project gets underway Tuesday.
The ramp from Weyerhaeuser Way to westbound state Route 18 will close Tuesday for about three months as crews prepare for one of two new flyover ramps as part of the $112 million Triangle project.
Drivers will follow a four-mile detour from eastbound Route 18 to the West Valley Highway and back to westbound Route 18.
About 4,300 people drive through that area daily, according to the state Department of Transportation.
While the ramp is closed, WSDOT crews will rebuild and elevate …