N.J.’s Route 31 closed for hours after vehicle crushes nuclear density gauge

N.J.’s Route 31 closed for hours after vehicle crushes nuclear density gauge

Route 31 in Hunterdon County was closed for several hours Wednesday after a vehicle struck a nuclear density gauge, a device commonly used to test soil and asphalt during construction projects, authorities said.Officials said the incident occurred when a vehicle ran over the gauge that was being used near the roadway in Glen Gardner, damaging the equipment.