If there are no bridges and the driver knows the route, it might be OK on a flatbed. traffic signals and other overhead lines, typically have a 17ft minimum bottom height, so even on the flatbed, it might be OK.
As suggested there are alternate ways to tow the truck. If you are in a parking lot, can you simply take the camper off?
Ironically, we had a similar issue about 3 weeks ago (towing a travel trailer though). We were towing across the Big Horn Mountains in Wyoming. Nothing crazy but a pretty good climb followed by a pretty good descent. Gave the truck a workout but she handled it like a champ. No issues, no warning lights, the gauges never budged from their normal readings. Up until this, there were no indications of any issues with the truck.
After we got to the bottom, stopped in a small town to fuel up. After filling up, hit the key...nothing. Entire dash was dark, no clicking or any reaction. Kind of lucky for us, we were blocking half the pumps and the 3 service bays, so they had to help us (actually they were really nice and helpful). After messing about with it, determined the alternator was out. $200 and 2 hour later, we were on the road again with a new alternator.
