Last week’s Classic Concord photo was a tough one, and we’re not surprised that no one got it right. It was the old wooden bridge that used to span the Merrimack River as part of Loudon Road. This week’s photo, again sent to us by reader Earl Burroughs, is of another Concord street being rebuilt all the way back in 1922. Need a hint? Well, all those horse-drawn wagons lining the side of the road in this picture have been replaced by horseless carriages. Know what street this is? Send your guesses to news@theconcordinsider.com.