Golden Gate Bridge wanted it to be painted with black and yellow stripes to ensure visibility by passing ships. Senior engineer Charles Alton Ellis, collaborating remotely with Moisseiff, was the principal engineer of the project. Moisseiff produced the basic structural design, introducing his "deflection theory" by which a thin, flexible roadway would flex in the wind, greatly reducing stress by transmitting forces via suspension cables to the bridge towers. Although the Golden Gate Bridge design has proved sound, a later Moisseiff design, the original Tacoma Narrows Bridge, collapsed in a strong windstorm soon after it was completed, because of an unexpected aeroelastic flutter.
Hell Gate Bridge to Queens via the Hell Gate Bridge, then continue south through Queens, eventually connecting to the East River Tunnels and Penn Station. As part of the plan, the Hell Gate Bridge would carry four tracks, which would connect to the NH's four-track lines on either side of the Hell Gate. Construction was overseen by Gustav Lindenthal, whose original design left a gap of between the steel arch and the masonry towers. Fearing that the public assumed that the towers were structurally integral to the bridge, Lindenthal added aesthetic girders between the upper chord of the arch and the towers to