The underpass linking Cassio Road with Rickmansworth Road is part of everyday life for motorists in Watford but it was a very new experience for those behind the wheel when these pictures were taken around half a century ago.

A Watford Observer photographer captured these images in the early 1970s when the underpass had just opened.

The underpass took traffic past the Town Hall and towards Hempstead Road, St Albans Road and Beechen Grove.

Watford Observer: The underpass was another big change to how Watford looked at the timeThe underpass was another big change to how Watford looked at the time (Image: Watford Observer)

It was another big change to the fabric of the town during that period which included the construction of the ring road and the widening of Rickmansworth Road and St Albans Road into a dual carriageway.

Watford Observer: Traffic queues along Rickmansworth RoadTraffic queues along Rickmansworth Road (Image: Watford Observer)