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
During construction, this project will require nighttime work near 10th Avenue East, at the SR 520/I-5 interchange, along the I-5 express lanes and at the I-5/Mercer Street interchange. There will also be periodic traffic detours.
Area map of SR 520/I-5 Express Lanes Connection Project in Seattle.