Several major routes run through the town, including the A456 which runs from Birmingham to just south of Woofferton, Shropshire; the A451 which runs from Stourbridge to Abberley; the A442 which runs from Droitwich to Hodnet, Shropshire, a few miles north of Telford; the A449 which runs from Newport in south Wales to Stafford and crosses the A456 at the Land Oak; and the A448 road which starts in the town and goes to Studley in Warwickshire, via Bromsgrove and Redditch. A major change in the town centre road infrastructure was the construction of the ring road in the 1970s and 1980s. This relieved the town's growing congestion but diverted traffic outside the centre, drawing off customers for businesses. The final phase of the ring road was never completed, which results in the town having a ring road that does not form a complete ring.