MEMORANDUM
TO:
FR:
RE:
DA:
Richard A. Davey, Secretary & CEO
Frank DePaola, Highway Division Administrator
Ongoing Work in the MHS Tunnels
August 1, 2014
To follow is a summary of maintenance and construction activities performed during the
weeks ending July 19 and July 26 in the Metropolitan Highway System Tunnels.
Overnight work:
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Contractors are repairing water infiltration at multiple points within the O’Neill
Tunnel (both directions) and on related ramps.
Water infiltration repair work is also underway in the I-90 Connector Tunnel (both
directions) and the Ted Williams Tunnel Eastbound.
A contractor working on behalf of the Massachusetts Convention Center Authority is
performing ongoing ceiling-related construction in the Prudential Tunnel. The
contractor is also installing new fireproofing materials. The contractor continues to
repair the walls and remove supplemental steel and concrete, which requires periodic
lane closures.
A contractor working on behalf of the owner of the Prudential Center continued work
on the ceiling of the Prudential Tunnel Westbound. This is a different section of the
ceiling than what has been noted above.
MassDOT continued the Callahan Tunnel rehabilitation with repairs to the tunnel
wall and installation of the wall panel support system. The tunnel re-opened in
March; rehabilitation work continues with periodic lane closures as needed. Workers
also repaired a trench drain at the entry portal.
A contractor performed a routine inspection of portions of the I-93 Southbound
Tunnel and related ramps. A contractor also performed a similar inspection on the
Northbound side. Contractors are also inspecting the Eastbound and Westbound
tunnel sets.
A contractor is also inspecting the overhead signs and lighting structures at various
points on Interstate-90. Recent inspections took place within the tunnel system.
A contractor continued repairs to the roadway wearing surface near the entry portal of
the Ted Williams Tunnel Westbound.
MassDOT workers replaced seven cases of bulbs and 4 ballasts near Ramp CN-SA (I93 Northbound, Exit 23, Government Center).
MassDOT workers replaced four cases of bulbs and 2 ballasts in the Prudential
Tunnel Westbound.
MassDOT workers continued testing and charging the standpipes in the O’Neill
Tunnel Northbound.
MassDOT workers replaced a clogged hose leading to a carbon monoxide detector in
the O’Neill Tunnel Northbound.
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MassDOT workers repaired the pan/tilt/zoom unit on a traffic camera and replaced a
cable on a second camera. The work occurred near the exit portal of the I-93
Northbound Tunnel.
MassDOT workers recalibrated two carbon monoxide detectors in the I-93
Northbound Tunnel.