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The best-case scenario would reopen the span in spring 2022 after structural issues are fixed.

COURTESY PHOTO: CITY OF LAKE OSWEGO - Work to figure out what's going on with the North Shore Road Bridge has started. The city still faces many unknowns with the North Shore Road Bridge closure, but community members are finally seeing repair activity begin this week.

This week, Lake Oswego entered two contracts with a design team and contractor — who will work together simultaneously — which totaled about $116,000.

"These contracts will likely be amended in the future, depending on the investigation, alternative analysis and construction estimates," said Erica Rooney, the city engineer and public works director.

In the summer, engineering staff found structural issues in the nearby retaining wall of the bridge, which prompted its closure. The bridge, which runs over Lakewood Bay, will be closed until further notice and people are encouraged to use an alternative route.

North Shore Road is open between Cabana Lane and Lake Shore Road for local access only. The city found cracks and movement in the retaining wall during an inspection of the bridge.

Rooney said geotechnical explorations are taking place, and workers might drill to identify whether anything is happening underneath the asphalt.

"Kind of peel back the layers a little bit and see what's underneath there and what's happening," said Rooney, adding that the surface only shows the tip of the iceberg regarding what could potentially be causing the dip and bulge in the retaining wall of the bridge.

The best-case scenario, Rooney said, is a small fix, which would allow the bridge to be open in spring 2022. She added that it is too soon to determine a specific timeframe.

The geotechnical report likely will be finished with recommendations in late November or early December, which would give the city a better idea for direction.

The exploration is an important part of the process, Rooney said, "so that we get a sense of what the challenges are going to be."


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