No, I do not see the missing tags in a comment section. I searched for 'Route 66' and found it on line 12856. I saw the <table> tag on line 12860. I scrolled down a little and saw some commented out HTML. From the indentation, it looks like the end tags should go on line 12893 but I am not familiar with your table. It's way too big for my human brain.
Unfortunately I am not sure how CSS HTML Validator
could generate better error messages about issues like this.
If you ever have time then I think you should find a way to remove the table. Tables are really only for tabular data... but it seems like it would be a lot of work unless you could automate it somehow. It's also a very large web page so if you ever re-design it then breaking it up into smaller pages might be a good idea too.
I did like my electric train as a kid in the 80s though! I would go to the local mall and buy a lot of accessories for it at the little toy store there... but the mall and toy store are long gone now.