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Delaware Department of Transportation

Virtual Workshop - Design-Build Statewide Pipe Replacement for BR 1-420 on Maryland Line Road

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Design-Build Statewide Pipe Replacement for BR 1-420 on Maryland Line Road

Comment submission has ended. Thank you.

Welcome to the Delaware Department of Transportation's virtual workshop. The goals of the virtual workshop format are to make it easier for the public to view the project information and to reduce the costs involved in traditional public workshops. This is a workshop regarding the replacement of Design-Build Statewide Pipe Replacement for BR 1-420 on Maryland Line Road.

Bridge Photos Bridge 1-420 has been identified by DelDOT's bridge management system as being in need of repair. The existing structure consists of two 125" X 87" corrugated aluminum structural plate pipe arches around 62 feet in length. A grouted riprap wall is at each face of the pipes.The replacement of Bridge 1-420 has been proposed as part of a statewide culvert replacement contract to replace corroding corrugated metal pipes. The bridge has a sufficiency rating of 86.0 and exhibits some minor deterioration and damage.

Construction Plan The scope of the proposed project is to replace the existing pipes with two 84-inch diameter circular reinforced concrete pipes placed on the outer sides of a similar 96-inch diameter pipe. The proposed pipes are 40 feet in length with riprap protection installed at the culvert inlet and outlet openings, extending into the streambed at the upstream side. These components will be constructed using both sacked concrete and R-7 riprap.

Bridge Plan, Section and Elevation: In keeping with the Department's mission that includes providing "a safe, efficient, and environmentally sensitive transportation network", the proposed design will limit any impact to the surrounding areas. The proposed design includes a paved roadway with 10-foot travel lanes, 4-foot paved shoulders, and maintenance pavement extending beyond guardrails on both sides of the roadway.

[Maintenance of Traffic] Because of the nature of the work and DelDOT's commitment to safety of the public, a portion of the roadway will be closed for the duration of the project. Temporary closure of Maryland Line Road (S461) between Vandyke Greenspring Road (S47) and Green Giant Road (S458) shall be necessary during the duration of this contract. A detour route has been provided and can be found under [Detour Information] on this project's website.

Right-of-Way Plan Although we strive to perform as much of our work within our existing right-of-way as possible, sometimes the nature of the work requires a larger area than what is provided, as is the case for this project. Existing right-of-way is 20 feet on either side of the roadway centerline with additional easements upstream and downstream of the existing bridge. Temporary easements shall be utilized at all 4 corners of the project to allow access for all proposed work to the bridge. All areas disturbed within these limits shall be restored to their natural condition upon completion of the work.

A real estate representative will contact any impacted property owners to review the Department's Real Estate process.


If you would like to make comments, you may submit comments by clicking on the link, "Virtual Workshop Survey/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 45 days of the posting of this virtual workshop on the internet. Thank you for participating in the Delaware Department of Transportation's virtual workshop.



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