Yeah, apparently it's 66,000 lbs and NASA calls it a 'lightweight tank' because a 'super lightweight' successor model used at the end of the program allowed additional payload.
That area of LA seems pretty flat... but the same can't be said for areas of downtown and northwest where there are some decent hills. The above is the last photo I took in the span of about 5 minutes while a colleague who was also our group's driver, waited impatiently a block away to leave for his dinner appointment. Looking at this photo now, it amazes me that the truck driver was able to get the tank through that turn. If I wasn't forced to leave so quickly I would have stuck around longer to watch.