Sheriffâs office investigating another bridge arson Sheriff: Bridge set on fire on purpose, sheriffâs office investigating second case in 5 months invol By Region 8 Newsdesk | January 11, 2021 at 10:40 PM CST - Updated January 12 at 6:11 AM POINSETT COUNTY, Ark. (KAIT) - Sheriffâs investigators want to know who set fire to a county bridge, destroying it. According to a Facebook post, the road department said a fire destroyed the bridge on Desmond Lake Road. For the second time in months, someone set fire to the Desmond Lake Road bridge. (Source: Poinsett Co. Road Dept. via Facebook) It is the same bridge that was damaged last August.