For all of the gorgeous girls that walk down Q Street staring at the sidewalk instead of my friendly face, I have news: [1] there are approximately 600 bricks per block; [2] the bricks are made in Virginia from clay imported mainly from North Carolina; [3] it takes approximately four man hours to lay a 10'x10' section of bricks; [4] there are 19471 bricks between Exxon and the Dumbarton Bridge; and [5] no, the bricks are not intentionally laid so that you stumble while wearing your Ferragamo mules.