Once your load is classified, the next challenge is mapping a route it can actually travel. An oversized vehicle can't simply follow the shortest path; it has to follow the feasible one, and finding that route is part planning, part detective work.
Start with the obstacles that stop a move dead: bridge weight capacities, overhead clearances under bridges and cables, and the turning radii at tight junctions. A single low viaduct can force a detour of many kilometres, so these checks come early.
Beyond a certain size or weight, escort vehicles become mandatory, and for the largest loads police escort may be required. Knowing these thresholds in advance lets you budget for escorts rather than being surprised by them at the last minute.
A well-planned route is the difference between a smooth overnight move and a convoy stranded at a junction. Invest the time here, document your plan, and build in contingencies for closures and roadworks.