I-495 that was constructed as part of the Capital Beltway High Occupancy Toll (HOT) Lanes project. The new bridge was both wider and higher than the one built in 1979. In 2013-2015, an Arlington County streetscape and utilities project realigned the W&OD's Trail's crossing of Columbia Pike (VA 244). An associated Arlington County project constructed a plaza and a bicycle "learner's loop" adjacent to the realigned trail in the County's Glencarlyn Park. In late 2015, a truck-climbing lane project was completed on VA 7 in Clarke's Gap. The project realigned the trail to move its crossing of Charles Town Pike (VA 9) at Dry Mill Road (VA 699) to a new underpass beneath the Pike on the south side of VA 7. The realigned trail bypassed the trail's former high point, reducing the trail's highest elevation above sea level from to . In 2017, a bridge carrying Belmont Ridge Road (VA 659) over the W&OD Trail and a trail parking lot was constructed in Loudoun County as part of a project to widen the road. Also in 2017, NOVA Parks made within the County a set of safety improvements at the trail's crossing of S. Sterling Boulevard (VA 846), including removing one left turn lane to reduce the trail's crossing distance, installing Rectangular Rapid Flashing Beacons, and widening the Boulevard's median On March 12, 2021, the VDOT opened a W&OD Trail pedestrian and bicycle bridge over Lee Highway (U.S. 29) in Arlington County's East Falls Church neighborhood as part of its "Transform 66 - Inside the Beltway" I-66 eastbound widening project. When planning the project, the VDOT hosted several public meetings that provided information about the bridge, which had raised concerns among neighborhood residents. W&OD Dual Trails project Around 2017, NOVA Parks commissioned a feasibility study for a potential widening of the W&OD Trail or for adding a parallel trail to it within Falls Church and Arlington County because of high use at peak times. The study's author recommended that NOVA Parks make plans to construct a or wide trail within the two jurisdictions, while temporarily widening the trail to . In June 2018, NOVA Parks received a $3.2 million grant from the Northern Virginia Transportation Authority that enabled it to expand a long W&OD Trail segment within the City of Falls Church. The project converted an wide section of the trail and part of its adjacent green space into