align="left">The new $7.6 million Main Street Viaduct in Pueblo, Colorado, is a six-span precast prestressed concrete bulb-tee girder bridge, spliced together with post-tensioning. The overall length of the structure? is 807ft (246 m) with a maximum central span of 7 74 ft (53 m). There are eight girder lines with girders varying in depth from 72 in. (7 829 mm) at the ends to 96 in. (2438 mm) at the center, creating an attractive haunched effect. The project was constructed within the designated 7 2-month time frame and was under budget. This article discusses the design alternatives and structural design considerations. Production, transportation and erection of the precast concrete components are also highlighted.?
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