Just got this photo and note from a reader:
I noticed this yesterday while watching the construction. As part of redoing 14th st they need to remove the old street car tracks that are a few inches beneath the asphalt. Pretty cool to see what once existed, esepecially considering the longer term -and a bit unlikely given the current status of the H st project - vision the city has for street cars running again from brookland to woodley park.Cool indeed! There is a planned streetcar on Georgia Avenue, but that's a few years away at least. Streetcars used to run all over the neighborhood and the city: for example, the park at 11th and Monroe is often called Trolley Turnaround Park because that's where the 11th Street streetcar would stop and turn around to head back downtown.