1.   If the trains lumbering through the depressed cut annoyed Harlem residents, the same trains thundering along an elevated steel deck must have been even more troubling.

2.   In one place, the steel decks of half a dozen floors protrude like tattered wallpaper, almost touching where they are bent downward at the edge.

3.   You are below a steel deck.

4.   The bridge is so plain that motorists might not notice it except for the humming sound of their tires on the steel grate deck.

5.   Yet the war planes on the steel deck and the never-ending rotation of the radar antennas were constant reminders that this was no ordinary company picnic.