ST. JOSEPH COUNTY, Ind. – The Indiana Department of Transportation (INDOT) announces the closure of State Road 4, between SR 23 in North Liberty and U.S. 31 in Lakeville. The closure is expected to begin Wednesday, July 10th and end Thursday, July 11th, but this project is dependent on dry weather and may be delayed if conditions aren’t ideal. Crews will perform a chip seal and fog seal operation to preserve the road surface.
Drivers wishing to travel eastbound on SR 4 will be detoured south on SR 23, east on U.S. 6, north on U.S. 31, and back to SR 4. Drivers wishing to travel westbound on SR 4 will be detoured south on U.S. 31, west on U.S. 6, north on SR 23, and back to SR 4.
The chip-seal process consists of distributing a liquid asphalt emulsion on the roadway and covering the liquid asphalt with crushed stone to provide a new wearing surface. Chip-sealing extends the life of a roadway by protecting it from moisture, ultra-violet degradation, and any other damaging exposures.
Drivers should exercise caution during these projects. Loose stone will be present on the roadway during the initial cure of the asphalt and can damage windshields and paint on vehicles that may be following each other too closely. It is recommended when travelling on a recently chip-sealed road to slow down and allow additional space between vehicles.
The fog seal is being applied on top of the chip-seal work. The fog seal is a light application of asphalt material that can lock in loose stone and help with dust problems. It also makes the road black, which makes pavement markings more visible.