No one thinks of a pedestrian bridge as an art form or place to linger, but the design team of a year-old overpass in Boston was determined not to be weighed down by its rudimentary function. Thanks to the collaborative effort of Payette architects and Arup engineers and lighting designers, Northeastern University’s ISEC Pedestrian Crossing is a sculptural weathering-steel structure that generates a glow when night falls. Arcing above a five-track rail corridor, this dramatic passage connects the school’s existing campus and a new academic center by Payette that includes the Interdisciplinary Science and Engineering Complex (ISEC), completed in 2016, and a lab facility under construction. Located at the nexus of the city’s Fenway and Roxbury neighborhoods, this fluid passage serves area residents and commuters as well.