The project team analyzed four alternatives (including a no-build option) for the intersection at Fort Johnson Road and Camp Road.
To determine which alternative best met the project goals, the project team evaluated right of way (ROW) impacts, grand tree impacts, property relocations, construction costs, and the projected traffic impacts. Staff recommends Alternative 1, an Urban Compact Roundabout for the intersection at Fort Johnson Road and Camp Road. Below you will find the recommended alternative and the additional alternatives the County considered.
|Grand Oak Tree(s) Removal||2|
|Level of Service* AM/PM (up to year 2037)||D/E|
|Construction Cost ($ Million)||$1.4|
|Grand Oak Tree(s) Removal||5|
|Level of Service* AM/PM (up to year 2037)||C/D|
|Construction Cost ($ Million)||$1.5|
|Grand Oak Tree(s) Removal||16|
|Level of Service* AM/PM (up to year 2037)||F/F|
|Construction Cost ($ Million)||$1.6|
*Level of service (LOS) is a scale that rates how well a transportation facility is operating from a traveler's perspective. Typically, the six levels of service are rated from A to F, with LOS A representing the best operating conditions, and LOS F the worst. Project managers use LOS to describe how a roadway or intersection is currently functioning, or how they will function in the future with or without improvements.
Why was a traffic signal alternative not presented?
The amount of traffic at this intersection does not meet the SCDOT's requirements to consider the installation of a traffic signal. The volume of traffic must meet SCDOT criteria for the County to consider a traffic signal alternative.
Why are you recommending an alternative that does not provide the best level of service?
While Alternative 2 does operate slightly better in terms of traffic flow, it would require the removal of 3 additional grand live oak trees. The County is committed to preserving as many grand live oak trees as possible while still meeting the purpose of the project. Alternative 1, the recommended alternative will still improve safety and traffic flow compared to if the County did no improvements.
What is the difference between Alternative 1 and Alternative 2?
Alternative 1 is referred to as an urban compact roundabout (UCR), and Alternative 2 is a considered a mini-roundabout. A UCR is smaller than a mini-roundabout and considered more pedestrian and bicycle friendly. This is because vehicles entering the UCR must do so at very low speeds, providing pedestrian and bicyclists a safe and effective use of the intersection. The smaller size of the UCR will improve safety at the intersection without additional impacts to grand live oak trees.
Will Alternative 1, the urban compact roundabout, accommodate
trucks, trailers, and recreational vehicles?
The center of UCR in Alternative 1 will consist of a raised median with a rolling curb. This will allow trucks, trailers, and recreational vehicles to travel the UCR with ease.
Will the center of Alternative 1, the urban compact roundabout, be landscaped?
No. In order to ensure that larger vehicles can safely navigate the small size of the UCR, Alternative 1 will not include landscaping.
What’s going to happen with the stone posts at Camp Road?
The County intends to relocate the stone posts within the new right of way.
Why are the stone posts at Camp Road important to the community?
The stone gates were erected in 1926 at the entrance to the Agricultural Society of South Carolina (AGSC) tract on James Island. They serve to memorialize the early agricultural research center and the AGSC’s former president, Arnold G. Stoney. Although a 1998 auto accident damaged the east post, the damaged portions were repaired.
Are the stone posts at Camp Road historic?
The State Historic Preservation Office (SHPO) has concurred with a preliminary study that indicates the posts are not eligible for listing on the National Register of Historic Places.
If you are considering all modes of transportation, why are there not sidewalks through the entire construction limits?
We will keep existing sidewalks in place and add proposed sidewalks where there is not property owner opposition.
Are we getting street lighting for Fort Johnson and Camp Road?
The County is considering proposed lighting for the Fort Johnson Road and Camp Road roundabout. We welcome your input regarding the inclusion of lighting in the Camp Road roundabout project.
I don’t understand why we can’t simply put up stop signs and make an all way stop?
In order to utilize an All Way Stop Control (AWSC) for this intersection, it must meet SCDOT criteria. The level of service with AWSC, even with turn lanes, is not acceptable and would create excesive delays. This delay exceeds what SCDOT standards allow.
What type of trees are being impacted?
The intersection improvements project will impact two oak trees (44” and 36”); both in fair health.
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