Need info on Construction Equipment Load Boards.

This seems a bit peculiar. It sounds like you're running either for a construction company or an equipment rental or dealership. Are you sure your company has ICC authority to haul freight as a third party carrier? If you don't have that, no freight broker will even give you the time of day.
Landolls... are really not good for freight hauling. They're heavy, they're hydraulic (get way up north in the Winter months and you'll realize the problem with that, quick), and they're a niche product. The flatbed could be of some use to you, if you have the appropriate ICC authority.
You can try seeing if Meyer Trucking in Colorado Springs has anything... they haul a lot of loads out of Siemens, and they do brokerage. Siemens loads can require anything from a flatbed to an RGN or double drop. It's not construction equipment, but it's something, and it doesn't pay terribly, either. , weekdays from 5 a.m. to 5 p.m.
Does your company not know how to find loads and dispatch appropriately? I don't know your company, but I'm getting the impression that they're either trying to keep you working so that they don't have to put you on work attached unemployment, or else they're desperate and don't have a plan.