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NHDOT outlines rumble‑strip plan for Routes 12/9; committee accepts report as informational
Summary
NHDOT presented a corridor project proposing sinusoidal centerline and shoulder rumble strips on Routes 12/11/9 through Keene as a low‑cost safety measure; the committee accepted the presentation as informational and noted local concerns about noise and pavement condition.
The New Hampshire Department of Transportation gave an informational presentation on a multi‑route rumble‑strip program that would install centerline and shoulder rumble strips on Routes 12, 11 and 9 through the Keene area.
Corey Spedalounis, DOT safety section project manager, said centerline rumble strips can reduce head‑on crashes by roughly 44–64% and shoulder/edge rumbles can reduce run‑off‑road crashes; he described a sinusoidal milled pattern chosen to cut perceived noise versus traditional rectangular patterns. DOT emphasized eligibility criteria (posted speed at least 40 mph, adequate pavement condition, minimum lane/shoulder widths) and an expected timeline that would advertise the project next month with construction anticipated in spring 2027. The committee voted to accept the DOT review as informational and encouraged staff to review localized concerns about pavement durability and any needed breaks near high‑use driveways.
