Iron County – Route 21 in Iron County will be reduced to one lane as Missouri Department of Transportation crews seal the roadway with a mixture of rock and oil. This section of roadway is located from Route 49 to the Reynolds County Line. Weather permitting, work will be performed on Wednesday, June 19, from 7 a.m. to 5 p.m. The work zone will be marked with signs. Motorists are urged to use extreme caution while traveling near the area.