I assume that you are going to run under your own authority. Check with some of the expediter carriers. Most will broker loads that they cannot cover. If you are a member of OOIDA, you can get a discount on their
Truckersedge - Truckersedge Software load board. It is a DAT load board. There are several loadboards. At one time I subscribed to
Load Board - Getloaded and
Internet Truckstop® Load Board - Find Freight Fast!. I would also check with Landstar. They broker freight and have an expediting division. Another major broker is CH Robinson. Both of them have their own loadboards. I have no idea how well they do with straight truck freight. I have also seen some LTL freight on
uShip - The Online Shipping Marketplace - Ship Freight, Furniture, Cars or Moves. I was not impressed with the rates. There may be a loadboard specifically for straight truck or expedited freight. I would check around.