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Marlborough commission approves Quinn Road culvert replacement with restoration and monitoring conditions
Summary
The Marlborough Conservation Commission approved application #04-26 to replace failing Quinn Road metal pipes with an 8' x 20' precast concrete box culvert over Cattle Lot Brook, conditioned on plan revisions per a May 29 LandTech report, in-stream timing (June–Oct 2027), a multi-year restoration and three-year monitoring requirement, and review of any state changes.
The Marlborough Conservation Commission voted to approve application #04-26 to replace failing 72-inch metal pipes on Quinn Road with an 8-foot by 20-foot precast concrete box culvert over Cattle Lot Brook.
Peter Hughes, Marlborough’s Director of Planning & Development, reviewed the project plan, saying the work will include a temporary single-lane road with traffic signals, temporary utilities and water diversion during construction; funding is secured on a 50/50 split between the town and the State of Connecticut, Hughes said. He told the commission the request for qualifications for contractors is expected to go out this fall and the current project schedule anticipates starting construction on June 1, 2027.
The commission’s approval, moved by Commissioner David Pratt and seconded by Commissioner Shana McDermott, incorporates conditions drawn from the LandTech consultant report dated May 29, 2026. Those conditions require revised plans that reflect LandTech comments; limit in-stream work to the window June 1–October 1, 2027; and require submission of a restoration plan that (1) replants 39 trees in areas 16 and 17 in the same ratio of conifers to deciduous trees, (2) applies a wetland conservation seed mix in areas 4, 8, 9, 10, 11, 16 and 17, (3) plants 24 wetland shrubs in areas 10, 11, 16 and 17, and (4) obliges the town to monitor vegetation and tree growth for three years after construction and replace any failing plantings. The commission also required that any additional changes from the state permitting office be reviewed by the commission.
Hughes said the State of Connecticut and the Land Bureau have reviewed the plans and impacts and that LandTech consultant Thomas Ryder provided analysis and recommendations supporting the restoration approach.
The commission voted unanimously to approve the application with the listed conditions. The next procedural steps include issuing the RFQ this fall and proceeding with permitting and contractor selection ahead of the projected June 2027 start date.
