MEMORANDUM
TO:
FR:
RE:
DA:
Richard A. Davey, Secretary & CEO
Frank DePaola, Highway Division Administrator
Ongoing Work in the MHS Tunnels
February 10, 2012
To follow is a summary of maintenance and construction activities performed last week
in the Metropolitan Highway System tunnels.
Please feel free to contact me if you need additional information.
Overnight work:
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Contractors continued tunnel joint repairs in the area of Ramp R-T, linking Essex
Street to I-93 Northbound. Eight joints in this area require repairs. Contractors
worked on two tunnel joints last week. The work is part of MassDOT’s ongoing
efforts to repair water infiltration. Work has also begun on tunnel joints on
nearby Ramp A-CN.
MassDOT finished repairs to a tunnel joint in the area of Ramp ST-CN, linking
the Sumner Tunnel to I-93 Northbound. This is also part of MassDOT’s ongoing
efforts to repair water infiltration.
Additional water infiltration repair work is occurring at Ramp CN-S, near Exit 26
from I-93 Northbound, Ramp SA-CS (Surface Artery Southbound to I-93
Southbound) and SA-CT (Surface Artery Southbound to Callahan Tunnel).
MassDOT is continued removal of delaminated concrete in the Storrow Drive
Westbound Tunnel. The delaminated concrete was removed and new concrete
poured in its place.
Workers continue to repair the plenum wall near Ramps D (Congress Street to I93) and F-D (Ted Williams Tunnel Westbound to I-93). The repairs are necessary
because a large drill bit broke free from the flatbed truck carrying it and rolled
into the wall. Previously, MassDOT restored mobile phone service in the tunnel
as a result of this accident, which had also damaged the communications conduits.
Workers performed a routine visual inspection of the boatwalls entering the Ramp
L Tunnel (in the area of Exit 20 Northbound to I-90 Eastbound). A boatwall is a
section of tunnel that does not have a roof. It is essentially a sunken section of
roadway with earth on the outside of the walls.
MassDOT repaired two cameras in the I-93 Southbound Tunnel.
MassDOT cleaned the lenses on all cameras in the Callahan and Sumner Tunnels.
Workers repaired a damaged crash attenuator near Exit 26 in the I-93 Northbound
Tunnel.
Contractor HNTB conducted a lighting study in the Ted Williams Tunnel
Eastbound as part of MassDOT’s plan for permanent replacement of strapped
overhead lighting.
Daytime work:
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MassDOT closed a lane on the I-90 Eastbound ramp at Exit 22 to facilitate a
Massachusetts State Police investigation into violence against homeless persons
nearby.