Specifications include, but are not limited to: The Eugene Water & Electric Board (EWEB) requests proposals from consulting companies/firms interested in providing a feasibility study. Due to the critical nature of this pipeline and carrier bridge, EWEB is proposing a feasibility study to construct a seismically resilient transmission main crossing of the Willamette River at or near the Knickerbocker Bridge. The aim is to reduce the risk to public safety in the case of a seismic-related natural disaster. The study will evaluate three overarching project alternatives to facilitate EWEB’s selection of a preferred alternative. In addition to the baseline alternative to “do nothing,” the alternatives include 1) seismic retrofit of the bridge and pipeline, 2) construction of a new trenchless crossing, and 3) construction of a new pipe bridge. A pipeline condition assessment will be performed through visual inspection and review of record drawings. Once the alternatives evaluation is completed, and a preferred alternative selected, a preliminary design and cost estimate will be prepared for the selected alternative that is reflective of a 10-percent level of design detail.
