A fire about 10 miles southwest of Walden closed Highway 14 for over an hour this morning. The fire was in a fiberglass structure, that contained or was near two oil separator tanks that were a short distance from the Highway. The road was closed as a precaution, as there was the potential for the separator tanks to explode. Walden firefighters were on scene for about two hours. Highway 14 was reopened to traffic around 9:30.