When was the first motorway built in England?

The first motorway opened in Britain was the M6 (M=Motorway). It was known as the Preston ByPAss. It was opened in 1958.
When it was planned, the Preston ByPAss was seen as the first piece of a large network. It was deemed a success and led to the construction of a second motorway, the M1, opened in 1959.

What is the difference between routing maintenance and major maintenance in school facilities?

The routine maintenance is the minor and consistent repairs that are engaged in the school premises. Examples could include Painting, replacement of fixtures, louver blades, furniture repairs, and Patching cracks in the school buildings.
The major maintenance could also be a total rehabilitation of the school, either school buildings or any other project within the school community. It could be total restructuring of the lighting system in the school or sanitary system.