Not 100% sure about this one, but since I contributed 10+% to the construction of Smallend High street and was the second highest contributor, I thought there was supposed to be some sort of Street Construction Trophy for being one of the top 8 contributors. However, I don't have such a trophy in my trophy case.
(P.S.: I'm not worried about "getting" the trophy - if indeed I earned such a thing! I'm only concerned that if I was supposed to have received the trophy, then there's a bug, cause I don't think I got it!)