Brockton Drive Dam Rehabilitation

We are replacing the structure at the lower dam on Brockton Drive Lake with a roller-compacted concrete structure. The project addresses dam safety concerns, reduces the frequency and severity of flooding, and improves water quality.

Project Details

Type:: Stormwater
Budget:: $4.2 million
Project Lead:: Stormwater Management
Contractors:: CDM Smith, Inc. (Design), Thalle Construction (Construction)

Construction to the lower dam started January 6. Brockton Drive will be closed until construction is complete in early 2021. Residents will still have access to their homes.

Note: If you live near the construction fence - garbage cans should be on the left side of the entrance for pickup instead of the right due to construction.

Detour
The road will be closed to all traffic between Bayliner Drive and Gentilly Place. Detour signs are rerouting traffic around the construction area through Whitehall Avenue, Hoyle Drive, and E. Millbrook Road.

Work Hours
Crews will work Monday - Friday from 7:30 a.m. - 5:30 p.m. with no work scheduled on the weekend (unless approved by the City of Raleigh).

The Lake
Since this dam is not functioning properly, the lake will be drained through the start of construction. This will limit the amount of water in the lake to reduce impacts from heavy rain storms.

History

The existing spillway for the upper lake at Brockton Drive was in very poor condition. The upper lake collected debris and flooded nearby homes during heavy rainstorms. The lower lake dam spillway is too small and there is severe erosion at the outlet of the pipe.

Schedule

Date	Activity
Fall 2018	Phase 1 construction complete
Spring 2019	Phase 2 design complete
Summer 2019	Phase 2 construction bid and permitting process
Winter 2020	Phase 2 construction begins
Winter 2021	Phase 2 construction complete

Phase One

The project included replacing stormwater drainage and sanitary sewers, and transforming the upper lake to a stream channel. The stream channel flows through the newly constructed stormwater infrastructure into the lower lake. These changes will improve the channel's water quality and reduce flooding to nearby homes.