Pennsylvanias Innovative Bridge Replacement: A Steel Beam Solution - Transportation officials announce a major project to replace the Commercial Street Bridge near Pittsburgh, using a steel beam approach to minimize traffic disruption. The original concrete and arch design bridge, built in 1951, will be replaced with a new steel beam structure constructed parallel to Parkway East. The old bridge will be demolished and the new section slid into place, reducing the construction timeline. Temporary road closures are expected, including a three-month closure of Commercial Road and a one-month closure of I-376 East in July, chosen for lower traffic volume.
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