whittier bridge project briefing 5-8-17 - mass.gov · issue massdot found with pier 1 cap • on...
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Project Briefing:
Whittier Bridge
MassDOT Highway Division
District 4 Highway Director Paul Stedman
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Issue Overview
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• In March, MassDOT inspectors discovered deficiencies in pier cap 1 of
the southbound portion of the I-95 bridge now under construction.
• After careful review, MassDOT notified the Joint Venture Walsh/McCourt
that they must reconstruct the pier cap in accordance with MassDOT’s
standards.
• While MassDOT is working to fully assess the schedule impacts
associated with this matter:
• There will be no cost impacts to MassDOT
• This work will not change the existing configuration of 3 lanes of traffic
in each direction on the bridge
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Project Background
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• Full replacement of the bridge that carries I-95 over the Merrimack River
between Amesbury and Newburyport.
• Includes 4 miles of I-95 roadway reconstruction/widening and 3
additional bridge replacements and 1 rehabilitation.
• Expands from a 6 lane bridge to 8 lanes to match the cross sections to
the north and south
• Budget: $328M | Project is 85% complete
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Work Completed to Date
• Joint Venture of Walsh/McCourt was issued Notice to Proceed in
Spring 2013; construction began in Summer 2013
• Northbound traffic was shifted onto the new bridge in November
2015; southbound traffic was shifted onto the new bridge in
December 2015
• Demolition of the old bridge
began in late 2015
• As of today, all substructure elements
for new southbound bridge
completed with the exception
of pier 1
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Whittier Bridge (looking east)
• The bridge is currently open to 3 lanes of traffic in each direction on
the existing northbound bridge.
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Whittier Bridge - Traffic
• There are currently 3 lanes of traffic on I-95 NB and SB
from Route 113 in Newburyport to Route 110 in
Amesbury. This includes 3 lanes of traffic on the bridge
itself (the pre-project traffic alignment).
• This roadway opens up to 4 lanes of traffic from Route
110 in Amesbury to the New Hampshire state line.
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Issue MassDOT found with Pier 1 Cap
• On February 23, 2017, contractor placed 260 cubic yards for the pier 1 southbound cap.
• On March 6, MassDOT observed deficiencies in the pier cap and reported these to the contractor. The pier cap exhibited extensive honeycombing due to improper consolidation (see slide 8).
• On March 8, MassDOT issued a Deficiency Report to the contractor and withheld $827K until the deficiency is corrected.
• The Deficiency Report requires the contractor to examine the work further and suggest possible repair procedures
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Example Defects MassDOT found
in Pier 1 Cap
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Example Pier with NO Defects
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Pier 1 Southbound
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Resolution
• On April 20, the contractor submitted three alternative concept repairs for review of varying scope and impact.
• After careful review, MassDOT notified the contractor that the proposed repair procedures were rejected and the contractor would need to reconstruct the pier cap in accordance with MassDOT’s standards.
• This will ensure that MassDOT is not compromising on the quality of the contractor’s work to ensure the tax payers are receiving what they ordered.
• MassDOT has met with senior leadership at the company to discuss this poor performance on the job and to ensure a strong working relationship going forward.
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Impacts: Schedule and Traffic
A preliminary meeting was held with the contractor on May 3rd to discuss the schedule impacts of this work.
• Gantry system installed to support remaining bridge construction operations (May)
• Demolition of existing pier cap 1 (late May - late June)
• Reinstallation of the new pier cap (July - August)
• At this point, work will resume on “pre-pier cap” operations, including installing structural steel, precast bridge deck panels, and ultimately paving of the new SB bridge
• MassDOT is working to fully assess the schedule impacts associated with this matter; however, there will be no cost impacts to MassDOT or change in the existing traffic configuration.
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Project Briefing:
Whittier Bridge
MassDOT Highway Division
District 4 Highway Director Paul Stedman
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Appendix
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