I found this link ages ago but wanted to list it here in case anyone is curious. This gentleman, Craig Bisgeier, has a New England model RR set in 1892. On his layout he needed a Whipple Truss bridge so he set out to kitbash/scratchbuild one from two Central Valley 150′ Pratt Through Truss bridge kits. The build is pretty involved and detailed. I wish there were more photos but nonetheless it’s a great resource for a modeler like me who is considering this daunting task! One benefit I do have is a full set of blueprints of the bridges crossing the canal. My plan is to laser-cut custom pieces as needed from thin mat board. More on this in the future.