Complex sentence: The 506-meter length bridge, standing on eight steel spans, was designed by Stefan Szyller, and its construction, which began in 1904, was supervised by engineers Mieczysław Marszewski and Wacław Paszkowski.
Split into simpler sentences: The 506-meter-long bridge, standing on eight steel spans, was designed by Stefan Szyller. Its construction, begun in 1904, was supervised by engineers Mieczysław Marszewski and Wacław Paszkowski.