Walk Bridge Program Housekeeping Items 6/12/2020 Manresa Island - - PDF document

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Walk Bridge Program Housekeeping Items 6/12/2020 Manresa Island - - PDF document

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Walk Bridge Program Housekeeping Items 6/12/2020 Manresa Island Online Public Meeting Ju ne 16, 2020 www.WalkBridgeCT.com 1 This meeting is recorded. There may be a few glitches, so please bear with us. We will immediately address any

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Walk Bridge Program

Ju ne 16, 2020

Manresa Island Online Public Meeting

www.WalkBridgeCT.com

Housekeeping Items

 This meeting is recorded.  There may be a few glitches, so please bear with us. We will immediately address any technical difficulties.  Please mute your phone during the presentation.  Please enter any questions or comments in the chat box. We will answer questions at the end of the presentation.  CTDOT will accept questions and comments until July 3, 2020.  Meeting materials are available at walkbridgect.com.

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Meet Your Speakers

  • Jim Fallon, CTDOT
  • Lauren DiGovanni, HNTB
  • Sarah Walker, HNTB

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Meeting Agenda

175 TRAINS/DAY 125K PASSENGERS/DAY

  • 1. Introductions & Meeting Purpose
  • 2. Walk Bridge Overview
  • 3. Proposed Lift-Span Construction
  • 4. Proposed Use of Manresa Island
  • 5. Natural Resources, Navigation & Aquatic Resources, Community
  • 6. Minimization and Mitigation Measures
  • 7. Federal and State Reviews, Approvals and Permits
  • 8. Next Steps
  • 9. Questions and Comments

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WALK BRIDGE REPLACEMENT REPLACEMENT OF THE OSBORNE AVENUE RAILROAD BRIDGE FORT POINT STREET BRIDGE REPLACEMENT AND ROADWAY REALIGNMENT EAST AVENUE BRIDGE REPLACEMENT AND ROADWAY IMPROVEMENT PROJECT CP243 INTERLOCKING PROJECT A N N ST R EET B R IDG E R EP L ACE M EN T DANBURY BRANCH DOCKYARD PROJECT

The Walk Bridge Program

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240’ Vertical Lift Span

  • Shortest construction schedule
  • Lowest risk during construction
  • Shortest period of navigation

restrictions

  • Fewest foundations in water
  • Improved alignment with

Stroffolino Bridge

Project Overview

Anticipated Duration: Approximately 5-6 years

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Proposed Lift-Span Construction

Replacement bridge lift spans will be:

  • Constructed off-site using accelerated bridge

construction (ABC) techniques

  • Floated to the bridge site
  • Installed in about 96 hours

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Construction Parcels Overview

CTDOT will require parcels for the construction of Walk Bridge for:

  • River and rail access and staging
  • Equipment and material storage
  • ABC -Replacement bridge lift spans construction
  • On site location -68 & 90 Water Street -initially

proposed; less than 0.2 nautical mile from Walk Bridge

  • Off site location proposed in Value Engineering Study;

about 2 nautical miles from Walk Bridge

  • Barges used to construct and transport lift spans to

bridge site

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Proposed Use of Manresa Island

Walk Bridge Manresa Island

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Proposed Use of Manresa Island

Northern Parcel (Parcel 5/86/2; 92 acres)

  • No construction use;
  • Site access only for up to 60 months.

Southern Parcel (Parcel 5/86/1; 33 acres)

  • Construction easement for 5-acre Staging and Storage Yard

in isolated, previously developed and disturbed area with waterfront access;

  • Use for up to 60 months. Active lift span construction for

up to 48 months.

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Staging and Storage Yard: Work Area

  • Pre-assembly of structural components;
  • Full assembly of both lift span trusses before float-in

to the bridge site;

  • Berthing of safety boat vessels and emergency rescue
  • perations associated with lift span construction;
  • Temporary berthing of construction vessels and

barges.

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Staging and Storage Yard : Laydown Area

  • Storage of construction materials (steel and timber);
  • Temporary storage of components from demolition of

existing bridge and project site (stone masonry and concrete debris, structural steel members, timber cribbing/pilings).

  • No dredged material will be transported to or stored
  • n site.

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Natural Resources

  • No freshwater or tidal wetlands exist in staging and storage yard; No impact to intertidal area.
  • No adverse impact to 100-year floodplain due to minor fill required for site preparation.
  • No impact to groundwater.

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Navigation and Aquatic Resources

  • Equipment and material barges about

300 feet outside of channel ≈ No impact to federal navigation channel.

  • Previous aquatic protected species and

habitat review included Manresa Island area ≈ No additional impact.

  • Spud piles used to anchor barges
  • Barge movements ≈ No impact to river

bottom or increased turbidity.

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Community

  • No impact on existing land uses.
  • Restored to pre-construction conditions after

project completion.

  • Employee traffic approximately 22 round-trips per

day (6-day week).

  • Truck traffic approximately 3 round-trips per day

during peak construction (5-day week; daylight hours).

  • Located 0.4 mile from nearest receptor ≈ no

perceptible increase in noise.

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Time of year restrictions and protection protocols for State-listed Species included in permits and contract specifications Six-inch layer of geotextile and stone as a separation barrier from existing Areas of Concern  Secure storage of fuels and hazardous materials -Flood Contingency Plan  Completely fenced with secure entrance gate

 Completely fenced with secure entrance

Minimization and Mitigation Measures

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Federal and State Reviews, Approvals and Permits

 NEPA and Section 106 Re-evaluation Consultation with FTA for Verification of Project FONSI  Coordination with National Marine Fisheries Service  Coordination with CTDEEP Divisions of Wildlife & Fisheries  CTDEEPFlood Management Certification  CTDEEP Structures, Dredging & Fill Permit and Section 401 Water Quality Certification  U.S. Army Corps of Engineers Section 404 and Section 408 Permits  U.S. Coast Guard Bridge Permit  CTDEEP General Permit for Discharge of Stormwater and Dewatering Wastewaters from Construction Activity

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Next Steps

 Public review comments –through July 3, 2020  NEPA Re-evaluation Consultation with FTA for Verification of Project FONSI –August 1, 2020  Permit application filings –Summer 2020  Final design –Fall 2020  Construction start –Fall 2021

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Stay Involved

www.walkbridgect.com 833-GO2-WALK info@walkbridgect.com @walkbridgect

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