Do you know about the Broad Channel bridge? You probably do if you live in southern Queens or the eastern reaches of Brooklyn. You might if you've been hitting the Rockaways this summer, or if you frequent the Belt Parkway. Maybe you're just a lifelong New Yorker. But if you're like me — you're a transplant who lives in northwest Queens and works in Midtown, and you don't own a car in the city — the reason you might know about the Broad Channel bridge is from the New York City subway's Twitter account. You see, the Broad Channel bridge is a swing bridge.