Complex sentence: The two main roads along the valley are the A442 on the east side from Bridgnorth via Alveley to Kidderminster and the B4555 on the west from Bridgnorth via Highley to Bewdley, both of these run north-south roughly parallel with the river.
Split into simpler sentences: The two main roads along the valley are the A442 on the east side from Bridgnorth via Alveley to Kidderminster and the B4555 on the west from Bridgnorth via Highley to Bewdley. Both of these run north-south roughly parallel with the river.