because of the paved section's potential environmental impacts. When completed, the final section connected the W&OD Trail's intersection with the Bluemont Junction Trail to the section of the W&OD Trail that is just east of North Carlin Springs Road. The final section included a new trail bridge over Four Mile Run and an underpass below North Carlin Springs Road. On October 20, 2007, construction began for a paved trail that would connect the W&OD Trail at its origin with the Four Mile Run Trail by traveling for along a bank of the Run while passing beneath the Henry G. Shirley Memorial Highway (I-395) in Alexandria and West Glebe Road in Arlington. On May 30, 2009, a ribbon-cutting ceremony heralded the completion and opening of the connecting trail. Spot changes After constructing most of the trail, the NVRPA focused on grade-separating the trail and making other spot changes, sometimes in collaboration with the Virginia Department of Transportation (VDOT) or with developers of nearby properties. In 1989, the VDOT completed the Herndon Parkway on the east side of Herndon, which included a trail bridge over the Parkway. In 1990, a trail bridge was constructed over VA 28 in eastern Loudoun County as part of a project to widen that road. In 1991, the trail crossing of Reston Parkway (VA 602) in Reston was moved from Sunset Hills Road (VA 675) to Bluemont Way. On October 3, 1993, the NVRPA completed a bridge over West Broad Street (VA 7) in Falls Church. In 1999, a developer, Terrabrook Communities, built a wide and high arched-concrete trail underpass beneath Reston Parkway as part of an agreement with the NVRPA. The of old trail in that section became connectors to the parkway at Bluemont Way. The western section of the Herndon Parkway, with another trail bridge over it, was completed in 1997. In 2001, the VDOT expanded the Fairfax County Parkway (VA 286) across the W&OD Trail right-of-way, building an overpass for the trail at about the same time. In 2005, the Sugarland Run Valley Stream Trail in Herndon was extended to connect to the trail. In May 2006, the VDOT completed work on an extension of Claiborne Parkway (VA 901) that crossed NOVA Parks' right-of-way. As part of the project, the VDOT constructed a bridge that carried the W&OD Trail over the extended Parkway. On June 15, 2011, VDOT opened a new trail bridge over