Unlike other suspension bridges, the Bronx–Whitestone Bridge originally did not have a stiffening truss system. Instead, I-beam girders gave the bridge an Art Deco streamlined appearance. After the 1940 collapse of the Tacoma Narrows Bridge, a bridge of similar design, trusses were added on the Bronx–Whitestone Bridge to minimize the span's oscillations. Further modifications to the bridge were made in 1988–1991 and in 2003–2005.