Howard, I had a couple of afterthoughts after last posting. Bridges would have to have overall weight capacity equal or greater than the bridge length in 286,000lb cars--meaning multiples of 286,000. That number, 286,000 lbs., is the heaviest individual car weight allowable based on the idea that one could have a train composed solidly of such cars. Let me offer a few anecdotal examples of branch operations I have personally witnessed. The largest number of locomotives I ever observed (and actually cab-rode) was 6 GP-9s. I did observe 5 and 6 unit trains that had mixed composition GP-9s and SD-9s. I don't know the eact weight of an SD-9, but a geep 9 is about 125 tons, or 250,000 lbs. Two of those is more than the futureupdated limit of 286,000. At Capitola, the entire train power sits on the bridge at one time in crossing. Using 70 ft. as a car-length, a bridge of 10 car-lengths (700 ft.)would need to be able to hold 2,860,000 lbs. at one time. And of course, the power and train crosses every bridge and trestle from Watsonville Jct. to Santa Cruz. Axle loading limits might be the culprit, if there is a valid limit, but that's why I said it would be interesting to research this more deeply. I personally believe Santa Cruz Co. would benefit greatly by being able to accomodate most visiting steam.