Crews rebuild shoulder of Hoit Road in Concord after collapse An excavator puts down a ready made retaining wall as city workers replace a section of Hoit Road in East Concord on Monday, April 5, 2021 after a washout of the Hackett Brook caused a sink hole and safety issue along the bridge above the brook. GEOFF FORESTER—Monitor staff An excavator lifts a ready made retaining wall as city workers replace a section of Hoit Road in East Concord on Monday, April 5, 2021 after a washout of the Hackett Brook caused a sink hole and safety issue along the bridge above the brook. GEOFF FORESTER—Monitor staff