ELYSIAN VIADUCT WORK UNEARTHS HISTORIC HOUSTON HERITAGE TRASH PILE The real value of the long-buried dump uncovered by the ongoing replacement of the Elysian St. bridge over I-10 and Buffalo Bayou, write Doug Boyd and Jason Barrett this week in the Chronicle, is in the opportunity it provides “to document the often-unwritten parts of our industrial heritage.” The dump, apparently built up over the early half of the 1900s in a former gully, serves as a springboard for the authors to talk trash — Houston, they write, was one of the first cities to adopt widespread municipal garbage incineration, and lagged decades behind as most cities chose to stop doing it out of concern for public health. Spots like the one under Elysian St., they add, help fill in the gaps of knowledge of what happened to all the other trash that didn’t end up in a city incinerator or landfill — and who tended to live nearby. [Houston Chronicle; previously on Swamplot]  Photos: Adam J Williams