Project Information: Creek and Drainage Conveyance System Rehabilitation Under Byrnwyck Rd Near 903 Byrnwyck Rd
Updated: 3/18/2024
Created: 9/28/23
NEW: Professional Engineering Design Services Firm Selected - POND & CO.
NEXT MILESTONE: 95% DESIGN DOCUMENTS and fund appropriation review. Conceptual Option #4 selected after Public Works final review.
Completed: Final Concept Design with Concept Level Opinion of Cost of analyzing data and preparing preliminary repair methods/cost estimate options of trenchless construction, such as Cured in Place Pipe/CIPP, Spiral Wound Lining/SPR, Jack and Bore)
• Concept #1: Road closure, open excavation, headwall replacement, pipe replacement- NOT Considered due to necessity of closing road (only access in and out to substantial number of residents, MAJOR disruption to residents/neighborhood/services and high construction cost.
• Concept #2: Pipe bursting, headwall replacement -Road remains open to residents but NOT favored due to large construction footprint necessary, disruption to residents/neighborhood/services and high construction cost.
• Concept #3: Existing pipe abandonment, jack & bore new casing, Line steel casing with HDPE -Road remains open to residents and reduced consideration due to large construction footprint necessary, disruption to residents/neighborhood/services and high construction cost.
• Concept #4: Point repair existing pipe, slip-line with cured-in-place polyurethane replacement, headwall repair. FAVORED CONCEPT - Road remains open to residents, limited construction footprint impacting stream, limited disruption to residents/neighborhood/services and lower construction cost.
SCHEDULE:
Field Work: Phase I: Started October 2nd - Completed week of October 2nd.
Design Phases: Phase I: Concept Design: Complete January 2024
Final Design: February 2024
Permitting: Duration: Estimated 3 - 5 months
Construction: Duration: TBD, Estimated 1 month (dependent on specialty contractor availability, weather) for selected Scope of Work, Concept #4
This page is intended to be the definitive (official) source for current information on the Upper Poplar Creek Watershed Improvement Project. Bookmark this page and share with the community.
Onsite Contractors providing support services will not have full project information and could provide inaccurate info. They've been instructed to refer you to this Project Information Page.
Please confirm any information you are provided with the Project Information site or the City's Project Manager
Please be aware that our selected engineering design firm may be collecting final data and making select site visits as they develop the FINAL Design for remediation of the drainage system under Byrnwyck Rd. There may be survey and geotechnical crews on and around the area at times, in t he coming weeks. They should identify themselves as Contractors for Public Works. Some survey work is completed but there may be follow-up field checks and data collection, as necessary.
Points of Contact (POC):
Tom Roberts, PE, Deputy Director Public Works, Tom.Roberts@BrookhavenGA.gov, 404.637.0528
Steve Osborn, PE, Municipal Projects Manager, Steve.Osborn@BrookhavenGA.gov, 404.637.0520
Background
The Byrnwyck subdivision (S/D) was built in the early 1980's, over 40 years ago. All of the drainage pipe installed by the developers was corrugated metal pipe (CMP), which has a useful life of between 30-50 years. After that period, it's not uncommon for pipes to have significant corrosion along their flow lines and in other locations. Manufacturing and installation defects that previously were undetectable become exaggerated, and failure could occur at anytime.
Typical failures involve cave-ins and sink holes above the weak points in the pipes. Many times, failures that have existed for several year aren't discovered until a sink hole emerges.
The culvert under Byrnwyck Rd in the Byrnwyck S/D that runs between the homes at 903 Byrnwyck Rd and 891 Byrnwyck Rd on the upstream side and 910 Byrnwyck Rd and 898 Byrnwyck Rd has reached the end of its life, and several failure mechanisms are at work. The pipe is crushed on the upstream side, corrosion along the entire flow line allows the creek and runoff to cross under the road outside of the pipe, and the connections between the pipe ends and their headwalls is separated.
