SR 235 begins at an intersection with US 1 (Richmond Highway) just east of Fort Belvoir opposite the entrance to Woodlawn, a portion of George Washington's estate that also contains the 20th century Pope-Leighey House. The state highway heads southeast as Mount Vernon Memorial Highway, a two-lane undivided controlled-access highway. SR 235 passes a recreation of George Washington's Gristmill, crosses Dogue Creek, and passes an entrance to Fort Belvoir. The state highway curves to the northeast and intersects Old Mill Road and Ferry Landing Road, both part of SR 623, an oblique intersection just west of Grist Mill Park. SR 235 continues east, curving toward the south and intersects another Old Mill Road and SR 623, now named Old Mount Vernon Road, before reaching the Mount Vernon plantation, a National Historic Landmark. The roadway continues east as George Washington Memorial Parkway, which serves the estate then follows the Potomac River as a four-lane automobile parkway north to Alexandria and Washington. SR 235 turns north onto Mount Vernon Highway, a two-lane undivided highway without access controls that passes through the Mount Vernon community. The state highway passes Mount Vernon High School and meets SR 623 (Old Mount Vernon Road) on a tangent before reaching its northern terminus at US 1 (Richmond Highway) in Hybla Valley.[2]
US 1 / SR 619 near Fort Belvoir
US 1 / SR 836 in Hybla Valley
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