It will be opening this spring, but there is no set date however. Mar 09, · The long wait is almost over! Status and Details: The proposed project is for commercial development of 35 acres of the WSU forest along SR 410 in Bonney Lake, including a proposed 155, 000 square foot Costco store including a fueling station, with an additional 150, 000 square feet of commercial development on the site. Additionally, logging has started in the WSU forest to make way for the road extension and clear land for the Costco building. The store is an important addition to the districts of South Prairie, Prairie Ridge, Cedar View, Buckley and Bonney Lake.
“ They dedicated 40 acres right in. It is being built by the Tall Firs movie theater and the Multicare Office. Costco - Bonney Lake, WA - Hours & Store Details Costco is located within easy reach on S Prairie Rd E, in the south- east part of Sumner, in Bonney Lake ( nearby Swiss Park ). Some estimates put the opening at mid- summer, others said spring.[ divider_ line] February Update.