In one or two sentences, explain design modifications which were implemented after the Tacoma Bridge disaster.

The Tacoma Narrows Bridge collapse led to modifications in the design of bridges, such as increased stiffness, improved aerodynamics, and wind tunnel testing to simulate different wind conditions.

Design modifications that were implemented after the Tacoma Bridge disaster included changes in the design of suspension bridges to better withstand wind loads and the use of aerodynamic shapes, such as flat plates and streamlined profiles, to reduce wind-induced vibrations.