Previously: CLARKSVILLE, TN (CLARKSVILLE NOW) – Police are working a wreck at Dunbar Cave Road and Old Russellville Pike and are asking the public to avoid the area. At about 5:15 p.m., police said that while the wreck has only minor injuries, it will take about 90 minutes to get the road cleared and open to normal traffic again. CPD is asking the public to find an alternate route until about 6:45 p.m.