The SR 520/I-5 Express Lanes Connection Project will create a dedicated reversible transit and carpool connection between SR 520 and the I-5 express lanes, along with a reversible transit/carpool ramp at the I-5/Mercer Street interchange.
What to expect
The westbound SR 520 off-ramp to East Roanoke Street will be closed from 9 p.m. Friday, July 8, to 4 a.m. Thursday, Sept. 1. Crews will use this time to construct a retaining wall for the future, reversible bus/carpool ramp between SR 520 and the I-5 express lanes. Travelers should plan to take alternate exits, including the westbound SR 520 off-ramp to Montlake Boulevard, or the westbound SR 520 ramp to northbound I-5, then exit 169 for Northeast 45th Street. Travelers can also use southbound I-5 exit 168A to Boylston Avenue East
Area map of SR 520/I-5 Express Lanes Connection Project in Seattle.