Town of Summerville Planning Area - BCD Council of Governments

The ThoroughfareThoroughfares should haveheavy buffering. Smallercommercial establishmentsabutting the road may haveaccess by way of alleys andshare access easements, notcurb cuts.The Thoroughfare is a route between communities or a community bypass. This road allows limited access toprivate property and prioritizes mobility. Only perpendicular streets (Avenues, Boulevards, or narrowercollector streets) intersect the Thoroughfare, not driveways. Intersection of the Thoroughfare by quiet, slow,local streets is undesirable and should be discouraged. The target speed is typically 40 to 50 miles per hour. Arural section may have 55‐mph target speed.A Thoroughfare may have two or four travel lanes, typically 12 feet wide each. Service for pedestrians might notbe desirable if facilities on lower speed roads are nearby. Otherwise, multi‐use trails serve bicyclists andpedestrians, separated from parallel travel lanes by at least ten feet; 25 feet or more in the absence of a curb.The multi‐use trail is eight to 14 feet wide for one‐way facilities and up to 20 feet for two‐ways. Trees andshrubs in the verge separate non‐motorized travelers from high‐speed automobile traffic. Utility lines in theright‐of‐way are under the verge.The Thoroughfare may be divided by a median, a swale, or even a barrier where right‐of‐way width isconstrained. A continuous two‐way‐left‐turn lane is undesirable because it leaves open the possibility of futuredriveway encroachments on the road and because it collects debris.Land development in the Thoroughfare corridor is oriented towards the perpendicular streets. Parking areas arescreened from the Thoroughfare travel lanes. Direct access to the Thoroughfare should be discouraged toincrease traffic circulation and mobility, although this is often difficult along existing roads. If multiple directvehicle access points are desired, a Boulevard should be planned instead.Transportation Design Element Page 6