Even from beyond the grave, the SRC continues with tricks instead of treats.
At the August meeting of our Area Commission on Transportation, a tri-county board advisory to the Oregon Transportation Commission, ODOT gave an update on the Center Street seismic retrofit, the sensible project arising from the SRC wreckage. There had been no presentation or other information in the meeting packet, so at that time there was nothing to say. The meeting minutes suggest a reason there was no presentation included! The news is kinda bad.
August minutes in November packet |
ODOT's formal engineering study for the project identified six distinct areas for work and a separate subproject for each.
About the "West Approach" and "West Ramp," ODOT says they "are not practical for retrofit due to poor soil....the cost to retrofit the west side of the bridge is almost as much as replacing and there are no additional funds for either." Seismic work on the west side will therefore have to be "a new project that could move forward independent of the current retrofit project."
So even when the $100 million retrofit is "complete," the west side connections will not be stabilized and will still be vulnerable.
Ultimately this is not wholly surprising.
SRC Geological Addendum, Sept. 2016 (inset detail added) |
On the "liquefaction hazard map" in the "Salem River Crossing Project Geological Resources Technical Report Addendum" of September 2016, the soils around the west side approaches are on "category 4" of 5, and surrounded by "category 3" soils. That's bad.