A508 roadThe A508 is a north-south A-class road in central England, forming the route from Market Harborough in Leicestershire, via Northampton, to Old Stratford in Northamptonshire, just outside Milton Keynes.HistoryThe route of the A508 follows a long-established route from Northampton to Market Harborough, crossing medieval bridges, or their replacements, at Pitsford and Great Oxendon.