Draft for Discussion & Policy Purposes Only

Merrimack River Bridge Rehabilitation Project

Contract #2-Substructure Improvements

Contract #B64CN02

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Project Overview

Draft for Discussion & Policy Purposes Only

• Three connected bridges in Haverhill, MA - Merrimack River, North Approach, and Washington St. Bridges; 12 spans total: 1,042 feet.

• Used by MBTA Commuter Rail, Amtrak Downeaster, and Pan Am freight. Daily service includes approximately 36 passenger trains and 10 freight trains.

• Project is broken up into two separate contracts due to the unique requirements for rehabilitating a historic bridge and in-river; masonry substructures

• Contract 1 is Superstructure repair and land substructure strengthening• Contract 2 Contract is river pier scour mitigation• Total Project Budget: $99,031,203• Total Construction Budget: $68,921,133

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Contract #1 (B64CN01)Design-Bid-Build Superstructure Rehabilitation

Draft for Discussion & Policy Purposes Only

• Contract ongoing with LMH/CMC. Award amount $23,937,000.• Strengthen structural members• Clean and paint• Replace bearings• Improve seismic performance• Historic Bridge Rehabilitation

better suited using D-B-B because of greater end product control

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Contract #2 (B64CN02)Design-Build – Substructure Improvements

Draft for Discussion & Policy Purposes Only

• River piers scour countermeasures• Improve integrity of pier foundations• Reasons for going Design-Build:

1. Contractor input because thecomplexity of the project andthe constructability will dictatethe final design from contractor means and methods 2. Access to specialized marineexperience and equipment

3. Alternate technical concepts

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Contract #2 (B64CN02)Design-Build – Substructure Improvements

Draft for Discussion & Policy Purposes Only

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Project Benefits

Draft for Discussion & Policy Purposes Only

• Extend the life of the historic bridges.

• Lift current speed restriction which is 15 MPH for Commuter Rail and 5 MPH for Freight traffic.

• Improve protection of piers against river bottom undermining erosion (scour).

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Design Build Team Selection

Draft for Discussion & Policy Purposes Only

• Seven firms responded to RFQ and LOI, three teams shortlisted.• Selected teams submitted Alternate Technical Concepts (ATCs) followed by

review of ATCs, submission of proposals and oral presentations.• As listed below a combination of the price proposal and technical score resulted

in Cianbro as the “Best Value Scorer”

Description Cianbro Engineer (HDR) SPS JF White

PRICE (Contract Amount) $ 28,270,000 $31,497,000 $ 31,970,000 $ 55,795,000

TECHNICAL SCORE (points) 89.21 - 81.85 81.75

TOTAL SCORE (Price/point) 316,892.73 - 390,592.55 682,507.65

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