Take exit 32 off of Rt 3 (this is the exit for Rt 4).
This exit puts you on a rotary.
Take the Westford Rd exit off the rotary (I think it's the 3rd exit from
the onramp but I'm not sure)
* The fields are about a quarter mile down this road on the right.
There is parking right there on the right side of the road by the fields
but it sometimes fills quickly (particularly when there are softball/baseball
games going on). There are additional parking lots at the [Junior High?] school
on the left side of the side of the road should you need it.
If you're closer to 495
Take 495 north to the exit for Rt 4
At the end of the exit take a left Follow this road to the end where it
dumps you on a rotary
You'll go almost completely around the rotary before getting off at the
Westford rd exit.
