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Elevated Roadway – Proposed Alignment

Elevated Roadway – Proposed Alignment. APPROXIMATELY 400 FT IN LENGTH. Elevated Roadway – Abutment Longevity. Western abutment is ~92 ft from existing shoreline Local erosion rates are ~0.92 ft/year This gives western abutment ~100 years

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Elevated Roadway – Proposed Alignment

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  1. Elevated Roadway – Proposed Alignment APPROXIMATELY 400 FT IN LENGTH

  2. Elevated Roadway – Abutment Longevity • Western abutment is ~92 ft from existing shoreline • Local erosion rates are ~0.92 ft/year • This gives western abutment ~100 years • Glacial Till knob at Money Hill and boulders may decrease erosion pace

  3. Elevated Roadway – Abutment Longevity • Eastern abutment is ~150 ft from existing shoreline and high water line • Local erosion rates are ~1.41 ft/yr • This gives eastern abutment >100 years • Remaining parking lot and revetment may decrease erosion pace

  4. Elevated Roadway – Deck Longevity • 2013 draft FEMA flood elevation for the proposed causeway area is El. 15.0. • Causeway deck is proposed at El. 15.0. • The causeway is designed to withstand wave forces up to El. 15 in case the deck is temporarily overtopped in a storm event. TOP OF RAILING, EL. 19.0

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