Rehabilitation Project Contract 2Substructure Improvements Contract B64CN02 Draft for Discussion amp Policy Purposes Only 1 2 Project Overview Draft for Discussion amp Policy Purposes Only ID: 509724
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Merrimack River Bridge Rehabilitation ProjectContract #2-Substructure Improvements
Contract #B64CN02
Draft for Discussion & Policy Purposes Only
1Slide2
2Project 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 substructuresContract 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: $68,921,133Slide3
3Contract #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 bearingsImprove seismic performanceHistoric Bridge Rehabilitation better suited using D-B-B because of greater end product controlSlide4
4Contract #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 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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5
Contract #2 (B64CN02)
Design-Build – Substructure Improvements
Draft for Discussion & Policy Purposes OnlySlide6
6Project 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).Slide7
7Design 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
RANK
1
-
2
3