Introduction
The Fern Hollow Bridge collapsed in Pittsburgh, Pennsylvania, in the pre-dawn hours of Friday January 28, 2022. The structure had carried Forbes Avenue across a steeply sloped stream valley on the eastern edge of Frick Park. Constructed in 1901 and replaced in 1973, the Fern Hollow Bridge and Forbes Avenue comprised a large segment of the Pittsburgh eruv’s northern boundary. Stone walls, some laid by masons and another the sheer face of a steep hill, carried the boundary to the bridge’s approaches. Then, using metal poles and then light poles along the bridge’s spans, the eruv boundary crossed from west to east. When the bridge fell that cold winter morning, Pittsburgh residents lost critical transportation and spiritual infrastructure.
Pittsburgh has had an eruv since 1986. The Pittsburgh eruv originally wrapped around the city’s Squirrel Hill neighborhood, an area with many synagogues, Jewish day schools, and stores catering to Pittsburgh’s large Jewish community. Later expansions added several nearby neighborhoods and institutions serving Jews, including universities (Carnegie-Mellon University, the University of Pittsburgh, Carlow University, and Chatham College) and several hospitals. The Fern Hollow Bridge is located in an expansion area added in the early 1990s. Currently, the Pittsburgh eruv covers 6.7 square miles with an approximate 16-mile perimeter.
A city marked by three rivers, many stream valleys, and steep topography, Pittsburgh has 446 bridges in its city limits. Though the investigation into the cause of the Fern Hollow Bridge collapse is ongoing, preliminary assessments point to deferred maintenance and a significantly deteriorated substructure. A Pittsburgh Post-Gazette investigation in the months after the collapse revealed that the Fern Hollow Bridge was one of many in the city and region rated poor and potentially dangerous.
It took less than a year for the Pennsylvania Department of Transportation to design and rebuild the Fern Hollow Bridge. Just before it reopened, I reported on the eruv and the bridge collapse for NEXTpittsburgh, a local online news outlet. This post expands on that reporting.
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