Keene construction projects this week include Central Square work, road closures, water-main repairs, bridge construction and parking changes. KEENE, N.H. (MyKeeneNow) Several road, utility and infrastructure projects will be underway across Keene this week, with motorists, pedestrians and cyclists likely to encounter closures, lane shifts and detours. Casella Construction will also begin conducting test pits in Central Square Monday as part of the city’s downtown construction project. Traffic will alternate through the construction zone, with the work expected to last one day. The final scheduled water-main project of the week will take place Thursday at Nelson Street and Roosevelt Street, where crews will install a water-main valve.