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 southbound I-5 is reduced to one lane through at least February 2023. The westbound SR 520 off-ramp to East Roanoke Street is open as of Sept. 1.
Any schedule changes to upcoming closures will be communicated here and on the SR 520 Construction Corner webpage.
Area map of SR 520/I-5 Express Lanes Connection Project in Seattle.