Just before 10 am an EMC wrecker with overhead lights on was pulling over to load a vehicle which had broken down on US 59 northbound over the Creekwood exit. As he did an 18-wheeler tank truck hauling old milk to a farm in Splendora slammed into the wrecker then hit the concrete wall. There were no injuries. The Creekwood entrance ramp northbound will be closed until about 11am. DPS is investigating.