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Rainwood Lane Stormwater Improvements

Last updated Sep. 10, 2017 - 11:23 pm
  • Planning
  • Design
  • Construction
  • Completed
  • Storm Drainage System
  • $3.5 million for North Ridge Phase IV & V
  • Stormwater Management (Lead)
  • Brown and Caldwell, Inc.

Current Activity

This project is part of the North Ridge Phase IV and V storm drainage improvement and stream stabilization project. The City's design consultant, Brown and Caldwell, Inc., is currently surveying sections of the North Ridge area for modeling and an as-built survey. Brown and Caldwell also is reviewing comments from the 65 percent plan review. The new data and comments will be incorporated into the 90 percent design plans. The project design and permit requirements are expected to be complete in the fall.

Summary

Design includes the installation of a 48- and 54-inch reinforced concrete piping system in the vicinity of 1201 Rainwood Lane and a box culvert system 4 feet high and 4 feet wide near 1208 Rainwood Lane. The outlet of the box culvert system will be at the back of the property at 1208 Rainwood Lane. This installation will be in addition to the existing storm drainage pipe in the street resulting in a parallel system with more capacity.

In addition to the stormwater system upgrades, sanitary sewer main replacements will occur to bring the sewer pipe up to City of Raleigh standards and to move portions of the main so it does not impact with the stormwater system upgrades. Project location is noted in an overall project location map for the Northern North Ridge set of stormwater projects.

The goal of the project is to reduce the frequency of street and right of way flooding by providing a 10-year level of service for Rainwood Lane. This means that the street will not overtop in a storm event of a magnitude expected to be equal or exceed once on average in a 10-year period. In addition, the project will reduce significant private property yard and structural flooding.

Images

  • Rainwood Lane Project Location
  • Rainwood Lane Storm Drainage System Outlet
  • Street and Right of Way Flooding
  • Private Property Flooding

Schedule

Project schedule with dates and descriptions
DateDescription
Fall 2017Phase IV and V design complete
Winter 2018Permit requirements, easement acquisition, and coordination of private utility relocations complete
Summer 2018Phase IV and V construction begins
Fall 2019Phase IV and V construction complete

History

This project is one of several projects located along the northern tributary stream to the upper North Ridge Country Club Lake within the North Ridge community. It is located in the Perry Creek Watershed. A history of flooding events in the area resulted in public meetings in April and June 2006. An engineering study was completed in December 2006. Although there are no known structural flooding problems along the street the potential exists for the street to overtop with water. The engineering study recommended improvements to the existing undersized storm drainage system.

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