 SR 234 has a brief overlap with Interstate 66 for between exits 44 and 47 on I-66.SR 234 begins at an intersection with US 1 (Jefferson Davis Highway) on the northern edge of the town of Dumfries.The state highway heads northwest as Dumfries Road, a six-lane divided highway that passes southwest of the Dumfries Road Commuter Lot, a park and ride facility, before it meets I-95 at a partial cloverleaf interchange.