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Delaware Department of Transportation

Design-Build Statewide Pipe Replacement for BR 3-630 on Maple Branch Road

Project Limits:

Bridge 3-630 is located northwest of the town of Redden in Sussex County, Delaware. The project limits are approximately 400 feet North and 400 feet South from the center of the bridge.

Project Need:

Corrugated metal pipe culverts are corroding throughout the state. The Department has over 200 bridge-length corrugated metal pipe culvert locations, most of which are at or beyond their expected 30-year service life. This project is one location of the 28 locations included in the current Design-Build contract and it will help the Department meet its performance measures related to number of bridges in fair or poor condition.

Project Overview:

The scope of the proposed project is to replace the existing pipes with three 72-inch diameter circular reinforced concrete pipes that are 64 feet in length with sacked concrete riprap installed at the culvert inlet and outlet openings and along the steepest adjacent embankments. Riprap aprons will be placed outside of the culvert openings along the bottom of the channel. Pipe replacement will be performed under a full road closure with a posted detour.

Design Phase:

Design work anticipated to be completed by August 2019.

Construction Phase:

Construction work anticipated to be completed by September 2019.

Additional Comments:

This pipe replacement is part of a larger Design-Build project consisting of multiple locations.



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