welcome - thank you for attending · 8/31/2018  · welcome - thank you for attending. i-495...

Public Information MeetingAugust 29, 2018

Welcome - Thank You for Attending

I-495 Haverhill Bridge Replacement

AGENDA

• Introductions• Team & Project Location

• Current Project Schedule• Project Overview• Project Design

• Bridge / Phasing

• Construction Elements• Construction Approach• Work Hours• Mitigation of Impacts

• Communications Program• Contact Information

I-495 Haverhill Bridge Replacement

INTRODUCTIONS – Project Team

Owner

I-495 Haverhill Bridge Replacement

General Contractor Lead Designer

Specialty SubconsultantsRegina Villa Associates, Inc.

Public Outreach

Green International Affiliates, Inc. Survey, Drainage, Structural Design

Project Location

Exit 48

Exit 49

CURRENT PROJECT SCHEDULE

• Stage 1September 2018 – September 2019

• Stage 2September 2019 – August 2020

• Stage 3

August 2020 – September 2021

• Stage 4September 2021 – June 2022

I-495 Haverhill Bridge Replacement

PROJECT OVERVIEW - Background

• 57 Year Old Bridges

• 712’ Long Bridges(NB & SB)

• 5 Simply Supported Spans4 Piers per Bridge In River

PROJECT OVERVIEW – Existing Conditions

PROJECT OVERVIEW – Existing Conditions

I-495 Haverhill Bridge Replacement

PROJECT OVERVIEW - Goals

• Complete Bridge Replacement (75 Year Design Life)• Eliminate need for Constant Emergency Repair Work

• Improve Roadway Safety• Full Width Breakdown Lanes

• Dedicated Exit Lane NB Exit 49

• Minimize Impact to Traveling Public During Construction.

• Minimize Environmental Impacts

I-495 Haverhill Bridge Replacement

PROJECT DESIGN - Bridge

• Design Build Approach• Benefits of DB Team (Engineer, Contractor & Owner)• Update on Current Status of Design & Construction

• Design Considerations• 2 Independent Structures • Similar Span Lengths (712’ vs 718’)• Meet 75 Year Design Standards• Increase Width for Acceleration Lanes• Reduce Spans from 5 to 3 (2 Piers per Bridge)

• Minimize Future Maintenance for Owner• Modify Alignment

• Accommodate Phased Construction

I-495 Haverhill Bridge Replacement

Trusted Team. Quality Results.

PROJECT DESIGN - Bridge

I-495 Haverhill Bridge Replacement

PROJECT DESIGN - Phasing

I-495 Haverhill Bridge Replacement

PROJECT DESIGN - Phasing

I-495 Haverhill Bridge Replacement

PROJECT DESIGN - Phasing

I-495 Haverhill Bridge Replacement

PROJECT DESIGN - Phasing

I-495 Haverhill Bridge Replacement

CONSTRUCTION

• Construction Approach

• Mitigation of Impacts• Traffic – Real Time Traffic Management Systems

• Work Hours

• Environmental

• Construction Noise

• Staging Areas

I-495 Haverhill Bridge Replacement

CONSTRUCTION- Construction Approach

• Establish Access• Water & Median

• Bridge Construction Critical Path

• Specialty Subcontractor Support

• Bridge Stats:• 7,000,000 Pounds of Structural Steel• 3,500,000 Pounds of Temporary Steel• 15,000 CY of Concrete• 160,000 CY of Earth Moved• 35,000 Tons of Pavement

I-495 Haverhill Bridge Replacement

CONSTRUCTION – Real Time Traffic Management

Provide Advanced Notice to Traveling Public of Current Traffic Conditions

• Multiple

Sensors

Boards

Cameras

I-495 Haverhill Bridge Replacement

CONSTRUCTION – Work Hours

Day Work 5 AM – 5 PM*

Night Work 5 PM – 5 AM *

• Contract Considers Peak Traffic Requirements and Seasonal Increases• 3 Lanes WILL be Maintained Throughout the Project

• I-495 Temporary Lane Closures During Off Peak Hours ONLY

• NO Lane Closures During Holidays

• Night Work Start Times Consider Weekend and Summer Traffic Increases

*Actual Start times will vary based on allowable lane closures and specific activity being performed*

I-495 Haverhill Bridge Replacement

CONSTRUCTION – Lane Restriction Hours

I-495 Haverhill Bridge Replacement

CONSTRUCTION – Mitigation of Impacts

Environmental

• In Water Restrictions• Endangered Species

• Wetland Replications• Water Quality Swales

I-495 Haverhill Bridge Replacement

CONSTRUCTION – Mitigation of Impacts

Construction Noise

• Noise Monitoring Plan• GeoTek – Acoustical Engineering throughout Construction

• Phasing Considerations for Demolition

• Majority of Demolition Performed During Day

I-495 Haverhill Bridge Replacement

COMMUNICATIONS PROGRAM

Stay In Contact

• Website www.mass.gov/i495haverhillbridge• Notifications• Project Updates• Meetings Information

• Email Advisories (Sign Up Tonight)• Direct Notifications• Traffic & Construction Updates

• Press Outreach

• Social media

I-495 Haverhill Bridge Replacement

CONTACT INFORMATION

• Dan Fielding, MassDOT Legislative Liaisono 857-368-8959

• Website:o www.mass.gov/i495haverhillbridge

• Email:o i495haverhillbridge@dot.state.ma.us

I-495 Haverhill Bridge Replacement

Questions

I-495 Haverhill Bridge Replacement

Public Information MeetingAugust 29, 2018

THANK YOU FOR ATTENDING

I-495 Haverhill Bridge Replacement