Municipal Stadium, home of the minor league baseball Hagerstown Suns. The highway meets a CSX rail spur at grade while passing through an industrial area that extends to the southern city limits of Hagerstown at Kenly Avenue. US 40 Alternate continues southeast as a state-maintained highway that passes the historic home Garden Hill and crosses Antietam Creek into Funkstown, where the highway's name changes to Westside Avenue. Within the Funkstown Historic District, the alternate route turns east onto Baltimore Street, then southeast onto Frederick Street. At the southern town limits of Funkstown, US 40 Alternate becomes Boonsboro Pike, which passes through farmland as it parallels Antietam Creek. The highway passes under I-70 (Eisenhower Memorial Highway) with no access and intersects Poffenberger Road, which leads west to the historic home Valentia. The highway veers away from Antietam Creek just past the historic Cool Hollow House. It then passes through the hamlet of Benevola and traverses Landis Spring Branch and Beaver Creek on its way to Boonsboro. US 40 Alternate enters the town of Boonsboro and its name changes to Main Street at its intersection with Maryland Route 68 (MD 68) (Lappans Road). The highway meets the south end of MD 66 (Maple Avenue) next to the Bowman House and the east end of MD 34 (Potomac Street) in the center of town. US 40 Alternate leaves the town of Boonsboro after its roundabout with MD 67 (Rohrersville Road). The alternate route continues southeast as Boonsboro Pike and starts to ascend South Mountain. At the summit, known as Turner's Gap, US 40 Alternate intersects Washington Monument Road, which leads north to Washington Monument State Park, and passes the Dahlgren Chapel and the Old South Mountain Inn. South Mountain to Frederick US 40 Alternate's name changes to Old National Pike as it intersects the Appalachian Trail at the Washington–Frederick county line and begins its curvaceous descent of South Mountain into the Middletown Valley. In the western part of the valley, the highway passes the Henry Shoemaker Farmhouse and intersects Mount Tabor Road, which parallels South Mountain north past the historic Daniel Sheffer Farm and Routzahn-Miller Farmstead. In Spoolsville, US 40 Alternate crosses Catoctin Creek and meets Old Hagerstown Road, which passes the Bowlus Mill House. The alternate route's name becomes Main Street as it heads east through Middletown. US 40 Alternate passes the Stonebraker and Harbaugh-Shafer Building and intersects MD 17 (Church Street)