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Merrimack River Bridge Rehabilitation Project Contract #2-Substructure Improvements
Contract #B64CN02
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Project Overview
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
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
River piers scour countermeasures
Improve integrity of pier foundations
Reasons for going Design-Build:
1. Contractor input because the
complexity of the project and
the constructability will dictate
the final design from contractor
means and methods
2. Access to specialized marine
experience and equipment
3. Alternate technical concepts
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Contract #2 (B64CN02)
Design-Build – Substructure Improvements
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Project Benefits
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
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
RANK 1 2 3
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