along Happy Creek. The U.S. Highway expands to a four-lane divided highway and its name changes to Commerce Avenue at SR 55, which heads west along South Street and east as John Marshall Highway. US 522 passes to the east of the Front Royal Historic District. In the northern part of the town, the highway curves west to Commerce Avenue's terminus at Royal Avenue, which carries US 340 and SR 55. The three highways follow four-lane Royal Avenue north to a right-angle curve where the three routes curve onto 14th Street and then turn north onto four-lane divided Shenandoah Street. US 522, US 340, and SR 55 cross Norfolk Southern's Hagerstown District rail line and the South Fork Shenandoah River into the Riverton area of Front Royal, where SR 55 splits to the west onto Strasburg Road. The two U.S. Highways then cross the North Fork Shenandoah River and Norfolk Southern Railway's B-Line just west of the confluence of the two Shenandoah River forks. US 522 and US 340 cross Crooked Run and have a partial cloverleaf interchange with I-66 as they leave the town of Front Royal. US 522 and US 340 head north along four-lane divided Winchester Road. The highways pass through Cedarville, the site of the Virginia Inland Port, and through Nineveh, the site of the historic estate Erin. North of Nineveh, the routes follow the Warren–Frederick county line and briefly enter Clarke County, where the road is named Stonewall Jackson Highway. US 522 and US 340 diverge at a four-legged intersection at Double Tollgate. US 340 heads east along Lord Fairfax Highway; the west leg of the junction is SR 277 (Fairfax Pike), which heads toward Stephens City. US 522 continues into Frederick County as Front Royal Pike, which passes through Armel at Wrights Run and Parkins Mills at Opequon Creek. The highway passes to the west of Winchester Regional Airport before reaching Millwood Pike, which carries US 17 and US 50. The north leg of the junction is the ramps to and from northbound I-81. US 522 turns west onto Millwood Pike, and the three U.S. Highways enter the independent city of Winchester within the southbound side of the partial cloverleaf interchange. US 522, US 17, and US 50 follow four-lane divided Millwood Avenue along the south side of the campus of Shenandoah University. West of Abrams Creek, the four-lane divided highway continues west as