Tualatin Hills Park & Recreation District hired MacKay Sposito to plan, design and oversee construction of five new trail segments to interconnect several existing stretches of the Waterhouse Trail. The trail is a 5.5-mile long off-street community trail that provides recreational and alternative transportation opportunities for bicyclists and pedestrians between the Metro Light Rail Station and a future community trail in the North Bethany area.
The trail segments lay within a number of environmentally sensitive areas and also required a number of mid-block crossing designs. In order to satisfy the design and permitting requirements, MacKay Sposito worked with numerous jurisdictional agencies including Oregon Deparment of Transportation, Washington County, Clean Water Services, Portland General Electric, Bonneville Power Administration, Department of State Lands, TriMet and the City of Beaverton.
In addition to providing the overall project management, landscape architecture, civil engineering, surveying and construction management for the project, MacKay Sposito also coordinated the efforts of a team of sub-consultants.
Among the amenities included in the design are: 8’-10’ wide asphalt trails with 2’ wide gravel shoulders, boardwalks and bridges, park furniture, signage, retaining walls, wetland mitigation, wetland buffer and landscape restoration, water quality and storm treatment facilities, utilities, roadway crossings, signalization, and lighting improvements.