Project overview
During summer 2023, our contractor crews will replace the damaged girder on the 24th Avenue South bridge over SR 518 near the Sea-Tac International Airport. Crews also will make bridge drain and drainpipe improvements in the area.
What to expect
The 24th Avenue South bridge over SR 518 will be closed to vehicle traffic throughout the remainder of project, with a detour available using South 152nd Street, Tukwila International Boulevard and South 154th Street. A shoulder over the bridge will remain open for pedestrians, bicyclists and other rollers.
Drivers along eastbound and westbound SR 518 also will see periodic nightly single-lane closures near 24th Avenue South (MP 1.40 to 2.70) and nightly closures of the South 154 Street off-ramp.
The two directional closures of eastbound SR 518 to demolish the damaged girder and lift a new one into place completed in mid-August 2023.
Map shows location of 24th Avenue South bridge over State Route 518 near Seatac International Airport.
