Those days are over! I found and highly recommend Jessie's repaints as they are based on real companies, and they look great! They use the default TTX centerbeams from the U.S. Freight pack and will add a more ralistic lumber run. 
Head on over to http://s1.zetaboards.com/DigiRails_Forums/topic/3765186/1/ to check them out. Please be advised you will have to copy some default files over for some textures to work properly. The Digi-Rails forum post has all the details of which files need to be copied over. To view the forums in Digi-Rails you may need to create a profile first as it is a members only forum like this one.
I was recommending this particular pack of centerbeams because I liked them for their realism and thought that others would like to have a link to them on this forum. Just in case if someone is looking for decent looking center-beams. Besides, I never liked the default ones anyways! These would look good for Kerry's lumberyard and I would either place the loaded Tolko or Tembec ones in for a pick up and drop off the empties of the same load or use all of them for variety.