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Terminal Groin Project

Stay up-to-date with the latest progress of the long-awaited Terminal Groin Project at Ocean Isle Beach!

This project is scheduled for completion prior to 4/30/22

Terminal Groin Marine Mattress and Stone Placement Progress Map (Click HERE

The Town has received questions regarding walking on the groin once it is completed.  This is a submerged groin and the design of this structure does not include safety features for traversing on foot (ie. guardrails, even surfaces, etc).  The Town encourages the public to stay off the structure and adhere to warning signs that will be installed in multiple locations once the project is completed.  Anyone choosing to climb/walk/fish on the structure will do so at their own risk.

Construction Phases:
 
PHASE 1 – Construction of the lower portion of the terminal groin, working from the landward point of the stone structure out into the water and up to elevation +2 ft NAVD88 (basically Mean High Water). During this phase, all of the marine mattress foundation will be installed as well as all of the stone for the lower portion of the structure. As the construction progresses, CDC (Coastal Design and Construction) will place large rubber mats on top of the stone so that the excavator can work from on top of the structure.  
 
PHASE 2 – Once Phase 1 is complete, CDC will begin placing the top layer of stone at the seaward end of the structure and working back towards shore.
 
PHASE 3 – Prior to completing Phase 2, CDC’s subcontractor (McLean) will begin the installation of the sheet pile wall and concrete cap, working from North to South.


 
Photo Gallery #1 (November 16, 2021 - December 7, 2021)
Photo Gallery #2 (December 13, 2021 - January 24, 2022)
Photo Gallery #3 (January 27, 2022 - January 31, 2022)
Photo Gallery #4 (February 10, 2022 - February 15, 2022)
Photo Gallery #5 (February 10, 2022 - Photos by Steve Wingfield)
Photo Gallery #6 (March 5, 2022 - ___________________)
Video Footage (by Steve Wingfield 2-10-22)



PROJECT STATUS REPORTS


November 19, 2021
Construction operations were being conducted today (11/19) on the landward portion of the terminal groin. CDC was observed laying twelve (12) marine mattresses between Sta. 2+85 and Sta. 3+14 and placing Size B armor stone on top of the in-place mattresses.

November 30, 2021
Completed Armor Stone: Tons To Date: 1,602 Tons
Completed Marine Mattress: To Date: 8,025 Sq. Ft.

December 15, 2021
Representatives from the US Army Corps of Engineers Wilmington District were observed on-site to inspect and observe the terminal groin construction operations. During the site visit the representatives from the USACE, CDC, and CPE observed and discussed the marine mattresses, rubber blasting mats, armor stone, marine mattress spreader bar, stone placing equipment, flatbed trucks delivering armor stone, quarry operations and observed sand being excavated to grade and marine mattresses being installed at the current seaward end of the structure (Sta. 6+45 to Sta. 6+75).

Contractor will be working through 12/22/21 receiving deliveries of armor stone from 12/20 to 12/22 (no work would be performed on the terminal groin). Crews will return to work on the terminal groin on 12/27 and will be on-site through 01/05/22.

January 11, 2022
Norfolk Dredging plans to begin mobilizing during the first half of Feb. and start placing sand approximately 300 ft west of the structure.

February 10, 2022
Beach Renourishment Project begins pumping fill west of Terminal Groin Structure

The US Army Corps of Engineers has provided a link to the placement tracker for your use.  Please note that the link must be opened in Google Chrome to function properly.  
https://usace-saw.maps.arcgis.com/apps/View/index.html?appid=d6ef95b7b58f405f8e61772a60bbd1ed
 
February 23, 2022
The Marine Mattress installation of the Terminal Groin (Phase 1) was completed on February 14, 2022, two weeks ahead of project schedule.  This included the installation of 516 Marine Mattresses for a total of 57,325 square feet.  These marine mattresses complete the 750-foot length of the terminal groin rubble mound section.  The placement of armor stone on the top of these mattresses will now begin.  The contractor has advised that the subcontractor plans to mobilize to the site on February 28, 2022, to begin the sheet pile installation operations (Phase 2) of the project.

March 8, 2022
The Town has made a request to the USACE for additional sand in the amount of 5,000 cy to be stockpiled at Shallotte Blvd for the purpose of filling in areas around the dune crossovers and to cover sandbags. The Town plans to install sand fencing and vegetation following the completion of the USACE CSRM project primarily along the sand bagged portion of the  shoreline.

TG and BR Before and After Comparison 3-29-22