Chip sealing operations are planned for several northern Boulder County roads in the summer of 2026. More information will be provided here when exact roads and segments are determined.
County Roadway Chip Seal Program
Chip sealing work consists of applying asphalt to a road surface followed by a layer of rock chips that essentially create a new roadway surface. A week after the chips are applied, crews return to the area to apply a sealant designed to help the chips adhere to the road. Finally, the sealant is followed by roadway striping operations. See to the right to view pictures of the process.
- Blue Mountain Road (CO Highway 36 to County Line Road)
- Apple Valley Road
- Old South St. Vrain Road
- North 53rd Street (CO Highway 66 to the end of pavement)
- North 75th Street (CO Highway 66 to Woodland Road)
- Woodland Road
- North 83rd Street (to the Larimer County border)
- Yellowstone Road (US 387 to end of pavement)
- North 115th Street (CO Highway 66 to end of pavement)
- Vermillion Road (US 287 to end of pavement)
- North 87th Street
Chip sealing operations are part of the county’s primary network roadway rehabilitation plan. The process is intended to extend the lifespan of the roadway and postpone larger reconstruction efforts that would require more expensive work and longer travel restrictions. Primary network county roads are typically chip sealed every six to eight years.
The road will be a bit rougher than normal for a few weeks, but the vehicles driving on the road soon crush the chips down making for a smooth ride that will help the road last a lot longer than it normally would have.
The exact start date for 2026 work has not been determined, but work usually starts in June and lasts into July. Work takes place between 7 a.m. and 5 p.m., Monday through Thursday.
Check the closures and constructions page for updates about current road projects.
For more information on the work, contact Andrew Barth, via email at abarth@bouldercounty.gov or call 303-441-1032.