Chip sealing on Highway 212 from Montevideo to Granite Falls begins next week
WILLMAR, Minn. – Chip sealing on Highway 212 from Montevideo to Granite Falls begins the week of August 30, weather permitting. Chip sealing is a type of paving material that mixes asphalt with pieces of gravel. A thin layer of liquid asphalt is sprayed on first followed by the placement of gravel. The gravel is compacted and the excess stone is swept from the surface. Chip sealing protects the pavement, increases skid resistance and extends the life of the road.
Drivers will notice that chip seals look different than regular pavement. The chip seal lends a rough, rocky appearance to the road and is generally bulkier than asphalt. A chip seal may appear purple due to the type of stone used.
Drivers will also notice that chips seals are not as quiet as new pavement. The rough surface can also cause an increase in vibration for bicyclists. After a winter of plowing, the vehicle noise will diminish and you will notice that the road will not sound as loud.
Chip sealing serves many purposes:
- Chip seals allow MnDOT the opportunity to preserve roads for a very low cost
- Chips seals prevent deterioration of the pavement surface from the effects of aging and oxidation as a result of sun, water, traffic and plowing
- Chip seals enhance safety by providing good skid resistance
- In hot weather, chip seals re-seal cracks by flowing back together
Although it may seem natural to avoid a road that has been recently coated or fixed, chip sealing is unique in that it does not keep drivers from the road. You can drive on a freshly chip sealed road after it has been swept.
The Highway 212 project from Montevideo to Granite Falls includes the resurfacing of Highway 212, installation of rumble strips, lining of existing culverts and replacements of culverts. Duininck Inc. is the contractor on the project.
For more information on the project visit mndot.gov/d8/projects/hwy212/index.html.
For additional updates follow us on Twitter @mndotsouthwest.