Sand Hill Rd Over Jones Branch (BR3-137)
Comment period ends July 14, 2017.
Welcome to the Delaware Department of Transportation’s virtual workshop. The goals of the virtual workshop format are to make it easier for more people to view the project information, and to reduce the costs involved in traditional public workshops. This is a workshop regarding the replacement of Bridge 3-137A on Sand Hill Road.
Bridge 3-137A has been identified by DelDOT’s Bridge Management section as being in need of replacement. The bridge is located on Sand Hill Road over Jones branch, northwest of Bridgeville, in Sussex County
[Upstream Elevation] The existing Bridge 1-330 consists of 3 – 5’ diameter corrugated metal pipes. The headwalls are made of sacked concrete riprap.
[Deteriorated Pipe] The pipes have active corrosion with measurable section loss. The corrosion has resulted in a loss of section over the length of the pipes. Although the pipes are safe to carry normal traffic at this time, the condition of the existing pipes warrants a full replacement of the structure.
[Approach Roadway] This view of the approach roadway shows a curve in Sand Hill Road through the project limits. Notice the wide shoulders between the edge of road and the top of the sacked concrete riprap headwall. This type of design does not require guardrail and will be retained in the proposed design.
[Construction Plan] Zoom in to project limits. The proposed project will install a precast concrete box culvert at the same location as the existing pipes. The extent of the project is 200’ along Sand Hill Road (100’ each side of the bridge) and 150’ along Jones Branch. The proposed roadway will be similar to the existing roadway. The culvert will be extended with wide shoulders to eliminate the need for guardrail and maintain access to existing tax ditch easements.
[Bridge Plan Section and Elevation] The proposed bridge is a precast concrete box culvert with a 10' span and a 5.5' rise. Precast concrete wingwalls will replace the existing sacked riprap headwall. Wingwall #4 is angled away from the road to improve flow into the culvert inlet. A riprap apron will be installed upstream and downstream of the culvert to protect against scour and stabilize the stream banks. The rip-rap will be buried and covered with streambed material in the stream, or topsoil, grass seed, and mulch on the stream banks.
[Similar Completed Bridge - Br 3-653 Rum Bridge Rd:] This slide shows a similar, though slightly larger, precast concrete bridge that was recently installed on Rum Bridge Road, between Bridgeville and Georgetown.
[Detour Plan] During construction, the road will have to be closed in order to perform the proposed work. As you can see, a temporary detour has been planned to accommodate the traveling public.
[Detour Map] This map more clearly demonstrates the route that thru-traffic will take during the temporary road closure. Motorists will be given advance notice of this closure on Atlanta Rd and Sand Hill Rd as they approach the project area. From the north, motorists will use Whitney Swamp Rd, Trinity Church Rd, Dublin Hill Rd and Atlanta Rd to return to Sand Hill Rd. From the south, motorists will use those same roads in reverse order.
[Construction Plan] Although DelDOT strives to perform as much of the work as possible within the Department’s existing right-of-way, sometimes the nature of the work requires a larger area than what is provided. That is the case for this project. As can be seen on the plan sheet, right-of-way and easements will be needed from adjacent property owners in order to complete the work. Right-of-way will be required for the placement and maintenance of the rip-rap in and around the stream. Temporary construction easements will be needed beyond the right-of-way for the placement of stream diversion so the proposed structure can be installed in a dry work area. These areas will be restored to their natural condition upon completion of the work. A real estate representative will be in contact with the affected owners to explain the department's real estate process. And finally, construction is expected to take 30 to 45 days and to be completed during the summer of 2018.
If you would like to make comments, you may submit them online by clicking on the link, “send us your comments”. Or you may call toll free to 800-652-5600, or call locally in the Dover area, 760-2080. Comments may also be mailed to DelDOT Community Relations, P.O. Box 778, Dover, Delaware, 19903. Comments are due within 30 days of the posting of this virtual workshop on the internet.
Thank you for participating in the Delaware Department of Transportation’s virtual workshop.