Like others have said, it's a bridge and I don't think it would be necessary to have it be a town. Plus I think it's good for the games to have other attractive areas other than making them all into towns and cities. Village Bridge is a really nice touch for Unova, and especially the people and their given dialogue/effect for the area; such as the guy who begins to sing after you talk to him. It's the first part of the game to have an actual voice throughout the soundtrack, and I think it's pretty neat.
Anyway not to get too off topic here, the graphics and scenery are very well done and the houses really suit what Village Bridge is. In a way, it does look somewhat like a town and could have just been made into one if anything, but I'm glad it isn't so. I don't really consider it a town anyway and to be quite honest, I don't think there are many locations outside of the towns/cities and even the bridges that are well designed as Village Bridge. So I'm glad it's one of the couple bridges and wasn't made into a town, although I probably wouldn't mind if it was (I probably wouldn't have considered it a bridge if it was a town from the beginning anyway); I just think it's better that it hasn't been made into one to give Unova a better look with its variety of areas, if that makes any sense.