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City engineers find subsurface void at downtown Triangle; intersection to reopen after repairs
Summary
Thrasher Engineering reported workers discovered a large void and an old box culvert while replacing combined sewer lines near the Triangle intersection by Wendy’s; contractors used flowable fill and expect the intersection to reopen next week, with an unrelated waterline replacement also planned.
Anthony, of Thrasher Engineering, updated the Clarksburg City Council on April 17 about work at the Triangle intersection downtown near the Wendy’s restaurant where crews have been replacing an old combined sewer line.
The update matters because crews uncovered a large subsurface void that had been eroding material into the sewer system, raising the risk of a road collapse. Council members were told the finding likely prevented a more serious failure and allowed crews to repair the problem while the road was closed.
Anthony said the work is part of the fifth phase of the city’s long-term control plan for sewer infrastructure, which includes replacing the combined sewer from the Milford Street bridge to Sixth Street with separate storm and sanitary lines. Contractors had completed the storm line from the outfall back to Pike Street and then moved to the sanitary work when they found a large void and an old box culvert at the bottom of the excavation. “We’re really glad that we found it while digging for this project and that a commuter or truck driver or someone didn’t find it from the road caving in,” Anthony said.
To stabilize the subsurface, contractors placed flowable fill (a cementitious sand-concrete mix) before paving. Anthony told the council that everything has been tied back in and, aside from a waterline replacement in the same area, the intersection should be reopened for travel next week; crews were attempting to open sooner but estimated Monday for certain.
Council members asked procedural and timing questions and were told the contractor and the city inspector were coordinating the final backfill and paving. No contract changes, dollar amounts, or contractor names beyond the engineering representative were provided during the update.
The city will proceed with the scheduled paving and the separate waterline replacement before fully reopening the intersection. Anthony concluded by asking for questions and thanking the council.
