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County approves bridge voucher; crews address sewer conflict on STBG bridge project
Summary
Humboldt County board approved payment of voucher No. 1 for Rognos Brothers on the Virginia Avenue bridge replacement (LC171507), and county staff reported a separate STBG bridge project where a higher-than-expected city sewer flow line requires a $15,000 extra work order to sleeve and protect a sewer pipe.
The Humboldt County board approved voucher No. 1 for Rognos Brothers on project LC171507, the Virginia Avenue bridge replacement, and heard an update on a separate federally funded STBG bridge replacement where crews discovered a sewer flow-line conflict.
County roads staff Benjamin reported the Virginia Avenue bridge project is “100% complete,” with the roadway reopened and hydroseeding applied to disturbed banks; the voucher pays all work except retainage. Benjamin said the bridge was replaced with a box culvert and that work crews moved on to another bridge replacement near Bob Nellis.
The board also heard that on the STBG-funded bridge replacement near the Sealcoat Road lagoons, contractors found the city’s gravity sewer flow line sits roughly 1.5 feet higher than the creek flow line where the new box culvert sits. County staff said the previously contracted dredge work did not reach the city’s right-of-way and that the county plans to cut holes in the box culvert, slide a protective ductile-iron sleeve through, and run a gasketed plastic sewer line inside it. Benjamin said the ductile iron will “act as a protective sleeve for water, ice, whatever,” and that the county will bring an extra work order, roughly $15,000, for DOT and the city engineering firm’s review. He said the project had $170,000 in available local funding, bids came in at about $1.46 million, and roughly $24,000 remained; the change order is expected to be about $15,000 and, per the county update, should not cost the county after DOT/engineer adjustments.
County staff gave timing details for nearby work: a separate box culvert replacement near Nellis is a 10-by-10 unit; crews expected to set the barrel quickly (weather permitting) and possibly reopen that road by the end of the week. The board was told crews had removed guardrail and driveway pipes at that site and planned mucking and backfilling immediately after setting the barrel.
The engineering firm on the city project was identified as Evergreen Engineering (formerly Murr Engineering), and Craig — described as the city lagoon operator — participated in on-site planning, according to the road supervisor’s report.
Board members did not request further delay; the voucher motion passed by voice vote and the board moved on to other business.
