[Maine-birds] crow city

Birders,  While returning to Wells from South Portland on Sunday late afternoon (dipped on Common Gull) I noticed a significant flow of crows converging at the junction of rts 95 and 295. Many were already perched in trees visible from the highway, and many more were streaming in along the 295 and 95 corridors.  Just wondering if anyone knows of the whereabouts of the communal roost, and if it might be somewhat accessible to birders for observation.  I know the big roost in Lawrence, Mass. makes for good entertainment.  There are likely to be Fish Crows joining in the circus, maybe Ravens too.  Coldly, Dave Tucker