SAVANNAH DISTRICT

 

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Tybee Island, GA Storm Damage

PROJECT NAME AND STATE:  Tybee Island, GA Storm Damage

AUTHORIZATION:  Project was authorized by Section 201 of Flood Control Act of 1965, Section 156 of WRDA 1976, Section 934 of PL 99-662 in WRDA 1986, Section 301(b)(4) and Section 506 of PL 104-303 in WRDA 1996.   Resolution by the Senate Committee on Environment and Public Works dated 8 November 2001.

SUMMARIZED FINANCIAL DATA

Construction

Estimated Federal Cost

$30,073,000

Estimated Non-Federal Cost

$19,471,000

Total Estimated Cost

$49,544,000

Allocation thru FY 2016

$21,782,802

Supplemental Allocation for FY 2017

$2,884,000

President's Budget for FY 2018

$0

Programmed Balance to Complete After FY 2018

$5,405,198

LOCATION AND DESCRIPTION:  Flood Risk Management.  Tybee Island is a 3.5-mile long barrier island, located 18 miles east of the City of Savannah at the mouth of the Savannah River on the Atlantic Ocean.  The mostly developed island is bordered on the north by the South Channel of the Savannah River, on the east by the Atlantic Ocean, and on the south and west by the Back River and other tidal creeks.  Tybee has an average width of 0.5 miles and the ground elevation varies from 10 to 18 feet above mean low water (MLW) and slopes westward to the salt marshes.  The City of Tybee Island, Georgia, is the non-Federal Sponsor for Construction and responsible for long-term maintenance.  The Section 934 Report, approved by the ASA (CW) in 1998, provides for future periodic nourishments, estimated to be every 7 years until the end of the 50-year project life in 2024.  The completion of the most recent renourishment marks the last scheduled renourishment before Federal participation expires in 2024.  Hurricane Matthew caused significant beach erosion in October 2016. CG Supplemental funds were issued for design and replacement of losses to allow the project to function until end of the 50-year project life in 2024.


ACTIVITIES COMPLETED FY2017:  Received CG Supplemental funds for the design and planning of beach loss due to Hurricane Matthew.  The plans and specs were completed.  The bid solicitation is on hold for re-evaluation of critical risk locations due to changes in site conditions caused by Hurricane Irma.

ACTIVITIES SCHEDULED FOR FY2018  Develop Project Information Report for Hurricane Irma. Continue coordination with the sponsor.

ISSUES AND OTHER INFORMATIONConstruction of the design template in FY2014/2015 was at the approved cost share of 60.7% Federal and 39.3% non-Federal.  The completion of the most recent renourishment marks the end of federal participation for the project.  A separate Feasibility-level study was authorized to evaluate the adverse impacts to the shores of Tybee Island, Georgia from the Savannah Harbor Federal Navigation Project.  The Channel Impact Technical Report concluded that the estimated combined shelf and shoreline impact at Tybee Island is 73.6%, which represents the reduction in sand volume on the Tybee shelf and shoreline due to the navigation project with the remainder of the erosion attributed to the natural processes.  

MILESTONES:

FY17

Approve Plans and Specs

September 2017 (A)

Advertise Contract

October 2017 (A)

Award Contract

December 2017 (A)

Issue Notice to Proceed

January 2018 (A)

Begin Construction (Sand on the Beach)

February 2018 (A)

Construction Complete

May 2018 (A)

ADMINISTRATION POSITION:  This project is consistent with Administration policy.

ACTION OFFICER:  Margarett (Mackie) McIntosh                                  1 October 2017

                                      CESAS/912-652-5320