Paeonian Springs. SR 7 continues towards the well-developed eastern half of Loudoun County as a four-lane divided highway with some at-grade intersections, and it passes through Clarke's Gap in Catoctin Mountain. Another SR 7 Bus. splits off on the western side of the town of Leesburg, the county seat of Loudoun County. The main road continues as the Leesburg Bypass, and merges with the bypass of US 15 around the southern side of Leesburg, while the business route passes through town as Market Street. SR 7 Business intersects with US 15 Business (King Street) by the county courthouse in the center of Leesburg. The Virginia Department of Transportation (VDOT) has plans to widen the section of SR 7 between SR 9 and East Market Street. However, due to highway budget restrictions, this project was put on hold in June 2008. As of December 2014, construction had begun on the widening of this section of SR 7. In addition to widening Westbound SR 7 from two to three lanes, the median will be modified to limit left turns into and out of Roxbury Hall Road, Leeland Orchard Road, Fort Johnston Road, White Gate Place, and Beechnut Place. In addition to the work on SR 7, roundabouts will be installed at the interchange between SR 7 and SR 9. The southern roundabout will combine the separate intersections of the on and off ramps from SR 7 and Colonial Highway/Dry Mill Road into one. The SR 7 bypass crosses the Washington & Old Dominion Trail just before the US 15 bypass splits off from SR 7 in eastern Leesburg, and then SR 7 Bus. rejoins the main highway near the same location. SR 7 continues on through the eastern half of Leesburg, with six lanes. It then crosses Goose Creek, and passes through Ashburn. SR 7 was rebuilt as a controlled-access highway through eastern Loudoun County. To accomplish this, highway interchanges were constructed replacing the ordinary intersections at Belmont Ridge Road, Loudoun County Parkway, Riverside Parkway, and Ashburn Village Boulevard while closing the intersection at Lexington Drive. A new overpass was constructed to carry Sycolin Road across SR 7 in Leesburg, which opened to traffic on August 11, 2014. An additional interchange was also opened at Battlefield Parkway in Leesburg on June 28, 2021. SR 7 continues as a controlled-access freeway and passes by numerous housing subdivisions, businesses, and shopping areas before it