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Commissioners weigh $305K repair versus $1.2M replacement for bridge 4084
Summary
County staff outlined repair estimates for bridge 4084 at about $305,000 and a full concrete box replacement at roughly $1.2 million. Commissioners discussed alternatives (aluminized CMP, Duramax pipe), potential weight restrictions, and whether to seek additional state bridge funds or apply via a new $1M-per-county program with a 25% match.
Engineering staff presented multiple options for bridge 4084 after noting the site's extreme skew makes replacement more expensive. "Concrete double-cell culvert, that length is 1,200,000," Speaker 4 said as staff detailed replacement and alternate pipe options (aluminized CMP, Duramax/HDPE with steel spiral).
Staff said the board could proceed with the MDT-approved repairs (timber pile-cap replacements and encasements) for roughly $305,000 as a shorter-term solution and limit allowable loads on the structure. Commissioners discussed whether to request additional MDT funding or pair the project with other eligible projects to improve chances under a state bridge funding opportunity that allows up to $1,000,000 per county with a 25% match.
