A  section of SR 528 from 64th Avenue Northeast to 83rd Avenue Northeast was originally two lanes wide with a graded roadbed suitable for later widening. A project to widen the section to four lanes cost $4.8 million (equivalent to $ million in  dollars), largely funded by the state's Transportation Improvement Board, and was completed in November 2000.
A section of SR 528 from 64th Avenue Northeast to 83rd Avenue Northeast was originally two-lane wide with a graded roadbed suitable for future expansion. A project to expand the section into four lanes cost $4.8 million (equivalent to $X million in  dollars), primarily funded by the state's Transportation Improvement Board, and was finished in November 2000.