Silverton Road Bridge Replacement
Silverton Rd now closed between 60th Av & 64th Av for bridge replacement.
Due to utility and other unforeseen delays, the Silverton Road closure is being extended to January 31, 2022.
Marion County has received funding for the replacement of the Silverton Road Bridge over the Little Pudding River. The county analyzed three options for the alignment of the replacement bridge. The first option was to close Silverton Road and construct the new bridge centered on the existing alignment. This would cause the least impact to properties on both sides of the bridge and would cost the least, but it would have required closing Silverton Road between June and November. The other options considered require widening to the north or south side of the existing bridge. These options would greatly impact adjacent properties, would cost approximately $1,500,000 more to construct, and would require two construction seasons to complete. However, either of the second two options would allow Silverton Road to remain open during construction..
After public meetings at Marion County Public Works and meeting with the City of Silverton City Council, the county has selected Option 1 as the preferred option, which will require closing Silverton Road during the summer and fall of 2021. The county hopes to lessen delays along the detour route of Howell Prairie and Hazelgreen Roads, by installing temporary signals at two of the intersections along the route.
A contract has been awarded to Farline Bridge Inc to replace the existing load limited bridge that is structurally deficient and functionally obsolete with a new bridge built to current standards for loading, alignment, grade and width. The new bridge will have two through lanes and a center turn lane that will extend to 64th Place. This turn lane, along with raising the bridge and improving the vertical alignment, will improve safety through this segment of Silverton Road.
Federal-Aid Bridge funds along with an approximately 10% County match are being utilized to replace the bridge. The total project cost is estimated to be $6,400,000, which includes engineering, right-of-way, construction, and administration.
Bid: Oct 2020