Driveway over unhelpful soils
The main question here is what sort of professional should I seek for my situation, but I’m providing details in case anyone has more specific advice.
I am going to need a driveway about 1500 ft long over soils which are “very limited” in their capacity to support an unpaved local road according to the USDA Web Soil Survey(https://websoilsurvey.sc.egov.usda.gov/App/WebSoilSurvey.aspx). The baseline plan is a gravel road due it being, I assume, much lower cost than other options. However I don’t want a maintenance nightmare either.
All of the soils in the path get the worst rating for shrink-swell, a little gets the poorest strength rating, and 200-400 ft of it (depending on exact path) is over “40% rock outcrop”. I’ve been reading a bit about geotextiles, geogrids, and geocells, but clearly I need to talk to someone who knows what they’re doing in order to optimize cost and durability. Is this a job for a civil engineer, or is that crazy for a residential driveway? Would excavation contractors typically have the right expertise?
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