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Government of BarbadosInter-American Development Bank

Coastal Infrastructure ProgrammeAddressing the Challenge of Coastal Erosion

Prepared by Baird and Associates

and the Coastal Zone Management Unit

Presented byDr. Leo BrewsterDirector, CZMU

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The LocationsThe Locations

Rockley to Drill HallRockley to Drill Hall Crane BeachCrane Beach Holetown Beach Holetown Beach Welches BeachWelches Beach Woman’s BayWoman’s Bay Holetown LagoonHoletown Lagoon Tent BayTent Bay Walker’s SavannahWalker’s Savannah

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This Presentation will feature two of This Presentation will feature two of these locationsthese locations

Welches BeachWelches Beach Rockley to Coconut CourtRockley to Coconut Court

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Welches Beach

Project ObjectivesProject Objectives

Minimize overtopping of roadwayMinimize overtopping of roadway

Expand beach if possibleExpand beach if possible

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Project LocationProject Location

Welches beach is located at Welches in Christ Church Welches beach is located at Welches in Christ Church on the south side of Highway 7, approximately 0.5 km west of Oistinson the south side of Highway 7, approximately 0.5 km west of Oistins.

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The ProblemThe Problem

During high wave energy events, waves either: During high wave energy events, waves either:

(1) run along the undercut sea cliff, increasing in height as they (1) run along the undercut sea cliff, increasing in height as they move inshore at the window to the sea at Cachel causing move inshore at the window to the sea at Cachel causing overtopping. overtopping.

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(2) The second area susceptible to overtopping is located at the (2) The second area susceptible to overtopping is located at the east end of the Welches “Window-to-the-Sea”. The seawall east end of the Welches “Window-to-the-Sea”. The seawall terminates immediately west of the problem area (the blue wall in terminates immediately west of the problem area (the blue wall in the photo is located on the north side of Highway 7).the photo is located on the north side of Highway 7).

The ProblemThe Problem

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ENVIRONMENTAL INVESTIGATIONSENVIRONMENTAL INVESTIGATIONS UNDERTAKENUNDERTAKEN

Benthic SurveysBenthic Surveys Coastal Vegetation SurveysCoastal Vegetation Surveys Marine Water QualityMarine Water Quality Turtle NestingTurtle Nesting

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SOCIAL IMPACT CONSIDERATIONS

Stakeholder Meetings held pre, during and post Stakeholder Meetings held pre, during and post constructionconstruction

Social survey undertaken post construction.Social survey undertaken post construction.

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PROPOSED COMPONENTS OF PROJECT

Construct segmented Groyne to East of SiteConstruct segmented Groyne to East of Site 5500 Cubic Meters of Sand west of Eastern Groyne5500 Cubic Meters of Sand west of Eastern Groyne Construct Concrete Outlook Construct Concrete Outlook Refurbish Existing Groyne and extend by 10mRefurbish Existing Groyne and extend by 10m Construct 40m Groyne to West of SiteConstruct 40m Groyne to West of Site 1500 1500 Cubic Meters of Sand west of Eastern GroyneCubic Meters of Sand west of Eastern Groyne

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Final Design: Main ProjectFinal Design: Main Project

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Project SummaryProject Summary

Contract Award Price Bds. $2,590,830.00 VAT Contract Award Price Bds. $2,590,830.00 VAT InclusiveInclusive

Actual Construction Cost Bds. $2,772,093.99 VAT Actual Construction Cost Bds. $2,772,093.99 VAT Inclusive Inclusive

Construction Time 10 months Construction Time 10 months

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Rockley Beach Project Activities Physical Model & Coastal AnalysesPhysical Model & Coastal Analyses

Environmental AssessmentEnvironmental Assessment

Stakeholder ConsultationStakeholder Consultation

Permit ApplicationsPermit Applications

DesignDesign

Contract DocumentsContract Documents

Town Planning ApprovalTown Planning Approval

IADB Washington ReviewIADB Washington Review

Bidding and Approvals ProcessBidding and Approvals Process

Construction and Construction ObservationConstruction and Construction Observation

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Selection of Headland/Beach

Headland/Beach prevents loss in most conditionsHeadland/Beach prevents loss in most conditions

Beachfill only would experience rapid loss of sand and Beachfill only would experience rapid loss of sand and would not provide a reliable base for the walkwaywould not provide a reliable base for the walkway

Breakwaters would prevent natural supply from offshore Breakwaters would prevent natural supply from offshore (and result in increased wave setup)(and result in increased wave setup)

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ENVIRONMENTAL INVESTIGATIONSENVIRONMENTAL INVESTIGATIONS UNDERTAKENUNDERTAKEN

Benthic SurveysBenthic Surveys Coastal Vegetation SurveysCoastal Vegetation Surveys Marine Water QualityMarine Water Quality Turtle NestingTurtle Nesting

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SOCIAL IMPACT CONSIDERATIONS

Stakeholder Meetings held pre, during and post Stakeholder Meetings held pre, during and post constructionconstruction

Social survey undertaken pre construction.Social survey undertaken pre construction.

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Project SummaryProject Summary

Contract Award Price Bds. $18,398,830.00 VAT Contract Award Price Bds. $18,398,830.00 VAT InclusiveInclusive

Actual Construction Cost (to date) Bds. $16,474,382.26 Actual Construction Cost (to date) Bds. $16,474,382.26 VAT Inclusive (Clean up and retention fee still VAT Inclusive (Clean up and retention fee still outstanding)outstanding)

Construction Time 18 months Construction Time 18 months

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Coastal Infrastructure Project BenefitsCoastal Infrastructure Project Benefits

Quality Shoreline InfrastructureQuality Shoreline Infrastructure Greatly Greatly Improved BeachesImproved Beaches and and Public AccessPublic Access (Welches, Holetown and Rockley) (Welches, Holetown and Rockley)

Environmental ImprovementsEnvironmental Improvements (turtle nesting, water filtration)(turtle nesting, water filtration)

Generational CapacityGenerational Capacity (Quality, World Class, Maintained)(Quality, World Class, Maintained)

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Project BenefitsProject Benefits ProtectsProtects Large Gov’t Large Gov’t InvestmentInvestment SignificantSignificant Long Term Cost Long Term Cost SavingsSavings Maintains a Maintains a Valuable Public ResourceValuable Public Resource in in

excellent conditionexcellent condition Maintains Maintains SafetySafety of Facility of Facility