MEMORANDUM
TO:
FR:
RE:
DA:
Richard A. Davey, Secretary & CEO
Frank DePaola, Highway Division Administrator
Ongoing Work in the MHS Tunnels
October 5, 2012
To follow is a summary of maintenance and construction activities performed over the
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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A contractor continues to work on demolishing the median island between the
Eastbound and Westbound sides of I-90, East of the Prudential Tunnel. The
contractor is also repairing the boat slab nearby and preparing for demolition
work from the other direction. This involves both day and night work.
A contractor continues to repair and replace the spray-on fireproofing material on
the bridge beams in the Dewey Square Tunnel. The contractor is also performing
similar work in the I-93 Northbound Tunnel.
MassDOT is continuing to test standpipes in the I-93 Tunnel. Recent testing
occurred in the I-93 Southbound Tunnel.
A contractor is finishing work in a portion of the Prudential Tunnel. In addition
to ongoing pavement repairs, concrete repairs, boat slab repairs and work on the
base slab and joints, the contractor is restoring and repairing concrete walls in the
area of the parcel formerly designated for the Columbus Center project. The
contractor also striped a recently repaired section of the roadway.
A contractor is continuing substructure repairs in the Storrow Tunnel Westbound
under Leverett Circle. Recent work includes wall panel repairs and lighting
upgrades. Repairs are expected to be complete this fall.
A contractor has begun a routine inspection of the entire Ted Williams Tunnel, in
each direction, concentrating on overhead items. A contractor has completed the
inspection of Ramp L (Exit 20 Northbound to I-90 Eastbound).
MassDOT brought in a contractor to clean and remove sediment from a drain line
system near the I-90 Connector Tunnel Westbound.
A contractor is in the process of installing a new design that replaces the trench
drain grate covers throughout the tunnel system. The previous covers were prone
to loosening or breaking, and could create hazards by falling into the trench box.
MassDOT has nearly finished installation of the new drains on the Southbound
side. The contractor is now working in the Eastbound and Westbound Tunnels
and associated ramps over the next several weeks. The contractor also tightened
bolts securing the old trench drain covers that have yet to be replaced.
MassDOT replaced three cases of bulbs on Ramp L-CS (Leverett Circle to I-93
Southbound).
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MassDOT removed an overhead sign after it was struck by an overheight vehicle
in the Collector Tunnel at Exit 20.
MassDOT made overhead concrete repairs and installed support angles on precast
panels in the Prudential Tunnel Westbound. The support angles will further
strengthen the tunnel ceiling.