City Of Tunnels

Pittsburgh has a whole lot of bridges, and a fair number of tunnels too. There's the Fort Pitt Tunnel, the Armstrong Tunnel, the Squirrel Hill Tunnel, and the Liberty Tunnel (known to the locals as the Liberty Tubes).
This is the Corliss Tunnel (sometime home of late night raves). A couple of years ago someone drove through it so fast that, having run the red light, they flipped their car over the rail and into the Ohio.
This manoeuvre is not recommended.