The anticipated opening of the Washington & Old Dominion trail bridge over Route 29 along the City of Falls Church and Arlington’s border is finally here, letting pedestrians and cyclists alike breathe a sigh of relief. A ribbon was cut for the bridge on Friday, signaling the completion of one major part of the Dual Trails project that is being started in Falls Church and eventually expanded to other sections of the W&OD, according to NOVA Parks executive director Paul Gilbert, the agency that primarily manages the trail. But more importantly, the bridge’s construction removes one of the 45-mile trail’s...