Interstate 84 traffic will be detoured onto Federal Way between the Eisenman Road and Broadway Avenue interchanges for parts of three nights this week while workers blast basalt rock at the Gowen Road exit.
The detour will be in place from 7 p.m. to 11 p.m. Tuesday, June 24, through Thursday, June 26.
The rock must be removed to allow construction of a new interchange at Gowen Road, according to a press release from the Idaho Transportation Department.
Flaggers will direct traffic during the detours, ITD says.
Blasting at the Gowen Road interchange began last week. Overall, ITD expects blasting will require closures for about 30 evenings sprinkled across June, July and August.
Built by Knife River Corp. of Boise, the new $27 million interchange is expected to be finished in late 2015. Another round of blasting is planned for spring 2015.