Does anyone know what happened to number 500 on the Texas State railroad, I checked their site and it said 500 was down 1472, any idea what that means?
I suspect they are referring to the FRA required 1472-operating day (or 15 years, if earlier) steam locomotive inspection. This is a pretty intensive inspection that requires quite a few man-hours to complete. Milwaukee Road #261 is down for a 1472-day currently as well. More info on the FRA-required inspections for steam engines can be found here if you are interested: