Fosse Way

From the Podimore roundabout northeast of Ilchester to Shepton Mallet the route traces that of the Fosse Way.

1922 road classification

The original A37 in 1922 started in Fortuneswell, Isle of Portland, however, the section to Dorchester was soon renumbered A354, presumably to create a link between the major port of Weymouth and the A30 at Salisbury, from where the route would continue to London. Such a route has now been superseded by the M27 and M3.

One of the worst accident spots on the A37 was the A371 junction just south of Shepton Mallet. The junction was always very busy and suffered long traffic queues due to the nature of the road. The junction was also a point where traffic would converge or pass through from multiple locations, this was further exacerbated by the A361 Glastonbury junction which backed right onto the first junction. This muddled configuration resulted in numerous road traffic accidents, many of which were fatal.

After a long campaign for the junction to be replaced, a roundabout was constructed in 1999 significantly improving road safety and traffic flow. There have been few other construction schemes on the road in recent decades.

In recent years most of the overtaking lanes, provided on steep stretches just south of Bristol, have been blocked out with chevrons.