Short Cut?

We don't normally shop in Tescos but we'd stopped there before going to Morrisons. We thought that we would take the most direct route and go over the level crossing then turn left just after to arrive at the entrance of Morrisons car park. Arrived at the level crossing with the gates down and stayed down for about 5 mins  before the train went past and they went up again. Then realised that there is a no left turn to get into the Morrisons so had to drive to the end of the road, get stuck at a set of lights and then drive back to morrisons in the main road.
Could have walked there faster!