WA SB5581

Prohibits construction of limited access highways that sever existing recreational trails or shared-use paths unless alternative routes are provided, and requires highway designs to accommodate pedestrians, equestrians, and bicyclists where facilities conform to adopted active transportation plans

Establishes a formal legal definition of "roundabout" as an intersection with counterclockwise one-way traffic around a central island, and updates crosswalk and intersection area definitions to clarify how they apply in roundabout contexts

Expands complete streets requirements for state transportation projects of $500,000 or more to allow WSDOT to partner with local jurisdictions or tribes to construct equivalent active transportation facilities on nearby local or tribal property as an alternative to building within state rights-of-way

Authorizes WSDOT to require recipients of Safe Routes to School, Sandy Williams Connecting Communities, and Bicyclist and Pedestrian grant programs to comply with complete streets requirements for changes affecting state rights-of-way

Repeals the existing "circular intersection" definition (RCW 46.04.118) and replaces it with the new roundabout definition, while updating related traffic laws to use consistent terminology