Highway 299 was closed all night near Big Bar in Trinity County, and drivers have had to face on and off again closures Tuesday. One-way traffic control has been in effect for months at a location where a persistent slide has had one lane blocked. That slide has gotten more active and at 10 O’clock Monday night the highway was completely blocked. At about Noon Tuesday crews cleared enough of the roadway to allow vehicles through, but the highway was closed again around 1:15PM. Cal-Trans is now saying the highway will be closed indefinitely.