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Rapidan Dam, Highway 9 bridge: county outlines bridge design, FEMA coordination and dam‑removal work
Summary
Blue Earth County staff reported on bridge removal progress, design work for a replacement bridge, FEMA damage quantification, and separate engineering work estimating dam‑removal costs. Staff said bridge design and river hydraulics work are under way, and that FEMA and Barr Engineering will produce separate cost estimates for repair and removal.
Blue Earth County staff provided an extensive update on the Rapidan Dam area and the Highway 9 bridge project on March 11, saying the bridge removal contractor is working on pier removal while county consultants and federal agencies continue to quantify damages and scope repair and removal options.
Staff reported that the bridge contractor used explosive charges and cable saws to sever and remove portions of the demolished bridge and that crews were rubbleizing and hauling debris. Weekly bridge design check-in meetings are in place; TKDA is serving as the bridge design lead and Barr Engineering is under contract to develop river and dam removal estimates and a river restoration design.
Staff said preliminary cost estimates for bridge…
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