Ƙirƙirar wani nau'i mai mahimmanci na wannan jumla An fara gina wannan sashi a watan Yunin 2007, kamfanin gine-ginen da ke aiwatar da aikin shi ne IMCO General Construction na Bellingham.
Tabbas, wani nau'i mai rikitarwa na jumla shine "An fara gina wannan sashi a watan Yunin 2007 kuma an kammala shi a Fall 2008, a jimillar kuɗin dalar Amurka miliyan 39.9, wanda Washington State DOT ta biya. "