Bridge 3-935 on McCoy Street
Comment period ends August 6, 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 3-935 on McCoy Street in Milford.
[Location Map] Bridge 3-935 has been identified by DelDOT’s Bridge Management section as being in need of replacement. The bridge is located on McCoy Street over Herring Branch, on the south side of Milford, in Sussex County
[Upstream Elevation] The existing Bridge 3-935 consists of a 16’ span corrugated metal arch. The headwalls are made of sacked concrete riprap.
[Deteriorated Arch] The arch has active corrosion some perforations. The corrosion has resulted in a loss of section over the length of the arch. Although the bridge is safe to carry normal traffic at this time, the condition of the existing arch warrants a full replacement of the structure in the near future.
[West Approach] This view of the approach roadway (looking from the west) shows the reverse curves across the bridge. Since the road does not have wide shoulders, guardrail is used to protect motorists from driving off the roadway while crossing the bridge. Also note that the wooded area on the right is a wetland.
[Proposed Design] The proposed project will install a 16’ span precast concrete rigid frame to replace the existing bridge. Guardrail will once again be used and will be placed such that existing entrances on each side of the bridge will not be impacted. Roadside drainage issues will be improved with the addition of a swale on the northeast corner and a stabilized outlet on the southwest corner. The project will also replace 260’ of roadway in the vicinity of the bridge.
[Bridge Plan and Section Elevation] The proposed bridge is a precast concrete rigid frame with a 16' span and a 7' rise. Precast concrete wingwalls will replace the existing sacked riprap headwall. The wingwalls are aligned to improve flow through the bridge while minimizing impacts to adjacent wetlands and utilities. A riprap apron will be installed upstream and downstream of the bridge 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 3-930 on Marshall Street:
This slide shows a very similar precast concrete bridge that was constructed in 2012. This bridge is around the corner on Marshall Street, only 200' downstream of McCoy Street and bridge 3-935.
[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.
[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, permanent easements will be needed from adjacent property owners in order to complete the placement and for future 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 approximately 60 days and to be completed during the spring of 2019.
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.