Bridges of main line tracks (Repealed)

The side clearances for through bridges carrying main line tracks may be decreased to the extent defined by a line extending vertically one foot and five feet nine inches laterally from the center line of track, then diagonally to a point three feet nine inches vertically above the top of the rail and six feet six inches laterally from the center line of track, then horizontally for a distance one foot six inches at a height of three feet nine inches above the top of the rail to a point eight feet from the center line of track, then vertically to conform with other sections of these regulations.