Drivers headed to Sea-Tac Airport Monday and Tuesday nights will find State Route 518 closed in both directions between State Routes 509 and 99 from 11 p.m. to 4 a.m.

The closure may continue on Wednesday night, March 27, as well.

Crews working for the Federal Aviation Administration will be replacing cross cables that hold Sea-Tac Airport’s runway lights.

Traffic will be detoured to South 154th Street to bypass the work area. Westbound traffic will continue to be able to access the Sea-Tac terminal by taking SR 518 to Airport Expressway, and eastbound traffic can reach the terminal by taking S. 154th St. to SR 99.

The ramps from South 154th Street to westbound SR 518 and Des Moines Memorial Drive to eastbound SR 518 will be closed from 9 p.m. to 5 a.m. as part of the project.