Engineering expert explains I-40 bridge crack Engineering expert explains I-40 bridge crack By Kelli Cook | May 12, 2021 at 9:55 PM CDT - Updated May 12 at 11:08 PM MEMPHIS, Tenn. (WMC) - A civil engineer and professor, who spent two years studying the Hernando-Desoto Bridge and installing sensors to track any abnormalities, explains the crack in the bridge. He says based on his research, motorists might have been driving over this crack for days or maybe even weeks. Crack in bridge (Source: TDOT) Traffic is non-existent on the famed “M” bridge. The U.S. Coast Guard reported 16 ves...