Use the ‘High and heavy load grid map’ as a guide to locate routes in a required area. Descriptions of these routes are available in the ‘Heavy load grid routes’ and ‘High load grid routes’ documents. Each document contains a list of routes with capacities and full descriptions of each route.
The Heavy Load Grids are defined by a set of categories A+ to F which relate to a set of vehicles on 12 and 14 axle trailers. Full descriptions of these vehicles are available from the ‘Heavy load vehicle classification specifications’ document.
High load routes allow loads with a height of either 18′ or 20′ and the heavy load route categories start at loads of 223.52T on 12 axles or 259.08T on 14 axles.
If you have a suggestion for a new route, or a change to a route, to be considered for the high and heavy loads grid please contact Highways England’s abnormal loads team. Newly suggested routes will need to be equal to or greater than the specifications of the existing routes. The suggestions must also be to or from locations with a critical need to move loads of this nature or be on regularly used routes.