That sounds fine as a long term fix, but I am not sure that we are even allowed in there yet to do anything. Still waiting to hear from the County.
Mike, I sounded a bit gruff earlier so I am editing my thoughts here in deference to your role as chief steward:
The lathe used on Dr. J is not the "cheese grater" lathe used in some stucco applications, so I think the risk of that type of injury will not really present itself. I still am of the opinion that these bridges are dangerous enough that an immediate repair using lathe should be done as a short term fix if the county is not going to, in the immediate future, dismantle, close, or rebuild them per your suggestion. I personally feel that these bridges are the most dangerous feature in the park as do a few other riders who have wrecked on them. The reason being is that they give the user a false sense that they are not slick, and the accidents in question have actually occurred on the two level bridges (the third one is very obviously a danger). I am concerned that an accident could result in a broken leg, hip, shoulder or even worse (mine included). If PTAG is to advocate safe trails, then I would like to go ahead and recommend temporary closure for repair, and if that is not possible, then the type of lathe used in the freeride applications. Long term though, I don't think that anyone cane argue with your proposal for proper bridge construction.