Computer-aided design of these structures can use a LUSAS (“lusas”) software package named for them. James Warren is best known for patenting a ubiquitous design of these structures. Arup added 89 dampers to one of these structures after synchronous lateral excitation caused its 2000 opening to be pushed back. (-5[1])Aeroelastic flutter, not resonance as commonly believed, (10[1])was the cause of the 1940 rupture of one of these structures (10[1])in Tacoma. (10[2])A triangular (10[1])truss is often used in these structures to mitigate (10[1])buckling. Unlike in a viaduct, (10[2])a catenary is formed by the cable that supports the deck of the suspension type of these structures. (10[1])For 10 points, name these structures that span a river. ■END■