Oregonians have no problem braving the winter rains that are common in the valley. For the Willamette River Bridge project, these rains bring rising river levels and seasonal challenges that our crews have to work through.
Throughout the year--but especially in winter--the construction team communicates with weather specialists for the most current forecast and tracks changing river levels through the U.S. Army Corps of Engineers website.
Up-to-date, accurate information is vital to keeping our bridge project on schedule, our work zone safe and for anticipating potential setbacks.
The heavy rains create turbulent water and standing waves on the Willamette River under the work bridge.
The higher wintertime river levels also push more debris, such as tree limbs and logs, downstream. While much of the debris passes through the work zone safely, our construction team evaluates any that collect under the bridge to determine their severity and accessibility before removing them.
Construction crews keep the boat channel clear of debris for the safety of the river users.
Our work bridge prevents construction materials from falling into the river, but as a large flat surface, it also collects rain water and runoff from construction equipment. The team pushes this water through slotted openings in the work bridge that drain into pipes, which carry it to holding tanks. The work bridge runoff is then filtered.
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