Concrete Driveways, Aprons & Pads in Sedalia, CO
Sedalia is unincorporated Douglas County, northwest of Castle Rock where Jarre Canyon Road (Highway 67) meets U.S. 85. Larger lots, gravel roads and long driveways change what a concrete job involves.
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Douglas County rules apply
Sedalia has no town government, so Douglas County handles permits. The County requires a driveway permit for work in its right-of-way on existing homes, such as paving an existing gravel drive, and a form inspection before concrete or asphalt goes in. The inspection covers only the part of the driveway in the County right-of-way or at the connection to a private road. Contractors applying for County permits have to be registered with the County.
What the County expects where the driveway meets the road
From Douglas County's typical-driveway handout (dated 2013, so have your contractor confirm current rules):
- Driveway entrances for properties under 35 acres are 16–22 feet wide at the road; 35 acres and up, 18–24 feet (flares included).
- Past the right-of-way, a single-lot driveway needs at least a 12-foot all-weather surface to the house.
- The driveway meets the road at 80–90 degrees and stays straight for the first 10 feet, sloping 2–4% away from the road.
- Concrete or asphalt in the right-of-way is at least 5 inches thick, and there's no concrete or asphalt approach across the ditch onto a gravel road.
- Ditch crossings need a culvert of at least 15 inches, and a driveway over a major drainage may need engineered culvert sizing.
Terrain and soil
Sedalia sits in the Plum Creek valley at the mouth of Jarre Canyon, where creek deposits meet the foothills. In its north-central Douglas County study, the Colorado Geological Survey found stream-valley (Piney Creek) alluvium samples ranging from up to 10.5% swell to as much as 5.7% consolidation, meaning one part of a deposit can heave while another settles. West of town, the CGS's Dipping Bedrock Overlay District includes the mouth of Jarre Canyon and the Roxborough Park area, where steeply tilted expansive bedrock can heave unevenly. On any of these sites, a well-drained, compacted base and a contractor who looks at why old concrete moved are worth more than a fancy finish.
Freeze-thaw on long driveways
Long, exposed driveways collect drifting snow and a lot of melt water. Slope the slab so water leaves it, keep culverts and ditches clear, fill cracks so water doesn't reach the base, and keep salt off new concrete.
Typical Sedalia projects
- Paving the apron and first stretch of a gravel driveway
- Shop, barn and RV pads
- Garage aprons and walks
- Patios on acreage
- Repairing heaved or settled slabs
Get a quote for your Sedalia project
Use the quote form on this page or the contact page. Tell us the address area, what's there now, roughly how big it is and whether an HOA is involved, and a local concrete contractor will follow up.
Other areas we serve: Castle Rock · Castle Pines · Parker · Highlands Ranch · Lone Tree · Larkspur.
Frequently asked questions
Do I need a permit to pave my gravel driveway in Sedalia?
Douglas County requires a driveway permit for work in its right-of-way on existing homes, including paving an existing gravel drive, plus a form inspection for concrete or asphalt in the right-of-way.
How wide does my driveway entrance have to be?
For properties under 35 acres, Douglas County's handout says 16 to 22 feet at the road; for 35 acres or more, 18 to 24 feet, flares included.
Can I pour concrete across the ditch to a gravel road?
No. The County doesn't allow concrete or asphalt approaches or cross pans across the ditch where a driveway meets a gravel road.
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