Unsafe Road works?

The road next to a primary school is shown as closed but access is possible by mounting the pavement to avoid the excavations in the centre of the road. Appreciate people need access for homes but loads of other vehicles are using the road in excess of 20mph and mounting the pavement. My concern is that there are two schools in the vicinity and kids could easily be harmed. Surely safer option could be found or some protection for the pavement could be arranged. Not helped with darkness during pickups etc.