Contractors for Thurston County Public Works will reposition traffic signal heads at the Yelm Highway/Henderson Boulevard intersection on Monday, January 28. The work, which begins at 9:00 a.m. and is expected to last four to six hours, will require lane restrictions, impacting traffic. The signal will be turned off during the work, while personnel from the county Sheriff’s Office will direct traffic. Motorists are advised to include extra time in their travel plans and to use alternate routes if possible