I used to ride on those roads quite often back when I lived in Bloomfield, and maybe not as often when I moved to Ratlum, but still quite a bit through the 90s. Nice place to ride. Ran quite a few XC races at Stanley Park, too, one of which Zack won back in 2010.
My guess is that Loomis Street probably gets a lot of bike traffic. And I was pleasantly surprised that coming down 57 there was a nice shoulder (and good pavement too).
Was looking for a Barnacle Goose that had been seen at the Springfield water facility on Granville Road, but it was nowhere to be seen, either before or after my ride.
And then stopped on the way home to get a new phone... :-)
Back in the 80s and 90s I used to ride on 57 from time to time. The hill coming up from Rte 8 in New Boston is a pretty serious one. I think I only rode up it once or twice, down it maybe three times. Good riding.