Just be very careful to double check with a truck/rv oriented program for weighted roads, bridges, low bridges, and no thru truck areas.
Yea I always check the route first and set up multiple points to create a specific route. The Garmin tells me to go on no truck roads far more often than google ever did.
That's why Rand McNally's trucker atlas is also handy to have. Consolidated lists of low clearances (especially in urban areas), & verification of truck-rated roads/bridges is easy-peasy. -- L