The Roman army invaded Britain in AD 43. The town, called Durnovaria, which forms the centre of modern Dorchester seems to have been founded in the mid-60s AD. It seems that the roads were laid out first, and buildings grew up around them later. There have been finds of Romano-British buildings all around the current town of Dorchester.
It was known that there was likely to be Roman archaeology on the museum site. A street through the middle of the town was seen in 1937 when a workshop was built. Test excavations previously demonstrated that there were areas where the road and other features were preserved.
The excavation has already revealed the remaining parts of the Roman road, with more left to discover.