A truck hauling a double trailer knocked down a utility pole at 8:47 yesterday morning in Arroyo Grande, closing both lanes of Los Berros Road until 10 last night and be closed again this morning at 9 in order for the scene to be cleared. The driver of the tractor-trailer was hospitalized with minor injuries. The truck was traveling at an unsafe speed and the driver misjudged a curve, causing the truck to overturn on the roadway, strike a pole and a tree and travel down an embankment. The collision with the utility pole caused the cable and phone lines to hit a second vehicle, but the driver was unhurt. The CHP is requesting motorists use an alternate route.