This project will realign part the Centennial Trail to pass safely beneath the new Spokane Road ("Old I-90") Bridge, which is being replaced in the 2008-2009 biennium. By coordinating with the Spokane County Engineer's Department, County Parks has secured a role in this bridge project by ensuring the construction of a suitable under-pass to accommodate the Centennial Trail. If awarded this grant, Spokane County Parks will eliminate a dangerous crossing and perfect an "incomplete link" by re-routing a shared-road segment and providing ramp-access to connect the new underpass and bridge to the 69-mile Centennial Trail. This realignment is critical to resolve two extremely dangerous trail-and-road intersections: first, near the I-90 on/off ramp at the entrance to Gateway Park; and second, at the shared road-and-trail parking entrance to the DOT Visitor's Center and County Dog Park within Gateway Park. Traffic is increasing in this area. Spokane County has a long-term lease with Washington DOT for it's use of a portion of the park; moving the Centennial Trail now will also eliminate a future conflict with DOT's plans for a new freeway interchange on the property. Finally, the realigned trail will define a base parameter for the creation of a Master Development Plan for Gateway Regional Park. Spokane County's matching funds are committed. This grant application is built upon successful inter-agency cooperation and enjoys a high level of public support - with an even greater potential for public benefit.