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PubrkWorks
September 2013
LAKEVILLE PUBLIC WORKS
Christopher Petree, Director
September 2013
Construction Project Updates
Construction projects both in and around the City are moving toward completion.
Interstate -35 Construction. Currently 1 -35 is single lane in both directions. Both
north and southbound traffic between County Road 2 and County Road 50 are
moved to the
same side of the
road and single
lane in each
direction. Also,
the 185th Street
ramps to
northbound 1 -35
are closed as is the
northbound exit
ramp to County
Road 50. These
and other
temporary ramp
closures will occur within the project area until November. The objective of this
project is to repair and improve the travel lanes, shoulders, ramps and bridges
along 1 -35 between Lakeville and Elko. One outcome will be to extend the
acceleration lane on the County Road 50 northbound ramp to 1 -35 in Lakeville to
help improve traffic flow. For additional updates please see the 1- 35/I -35E
improvements page at the Mn DOT website.
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Dodd Boulevard - Highview
Avenue Roundabout. The
Dodd Boulevard - Highview
Avenue roundabout project
has been completed and
was opened to traffic last
week. The final layer of
asphalt was laid down on 23
and 24 September and
striping and landscaping
was completed later that
week.
Street Reconstruction. The street
reconstruction project in Valley Park is
nearing completion in both Phase I and Phase
II. The first course of asphalt has been laid
and work is proceeding on the restoration of
landscaping and adjustment of manhole
structures.
In Clays Acres, work is ongoing to complete
curb and gutter installation. New storm sewer
has been installed in some areas and new
perforated PVC drain tile has been installed to
redirect ground water to the storm water
drainage system and reduce wet spots and
water pooling in yards and along the curb
line. The work on 204th Street is ongoing and
will be completed on schedule.
168th Street Bridge Replacement. The
last major project from 2012's street
reconstruction is the replacement of
the bridge over North Creek at 168th
Street and Gannon Avenue.
Installation of footings has been
completed and a new support
structure is in place to receive the
bridge deck. This project is on
schedule and is planned to be
completed in early October.
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• Valve Repairs
Water system maintenance is an
ongoing and active series of
tasks. There are the large and
noteworthy situations like water
main breaks that impact a lot of
people, but there are also
smaller, but just as important,
repairs to portions of the
system. These generally don't
affect very many people other
than the inconvenience of
having a hole in the street. One
of these system repairs is the
replacement of bolts on valves.
Occasionally, water will come to the
surface around a gate valve in the
street. Sometimes this is just
groundwater finding the easiest path
to the surface, but at other times it is
indicative of a weakening of the bolts
that hold the valve cover in place. The
City has had problems in the past with
valves that were installed with poor
quality bolts. As the years progress, the
corrosive soils eat away at the bolts
and allow seepage around the valve'h,
cover. Fortunately, the remedy is just
to replace the old bolts with new
stainless steel bolts. Thus, once their
valve is uncovered, removing and replacing bolts
make sure the problem has been corrected.
•
Storm Sewer Maintenance
Installation of storm sewer catch
basins is far from an exact science.
The engineering and placement of
the pipe are done to a specified
standard and the pipe is
appropriately grouted to eliminate
the potential for ground water
intrusion, but the weak spot is
generally where the water enters
and then testing the valve to
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the catch basin at the curb. Once the pipe and catch basin structure are installed,
the structure has to be brought up to grade. This is done with concrete rings of
varying thicknesses, these are then grouted to prevent water intrusion and the
catch basin grate and frame are brought level with the curb. The problem is that
over time, the rings shift and the grouting breaks down and ground water is
allowed to seep into the catch basin. This usually produces telltale depressions in
the asphalt, small sinkholes,
adjacent to the catch basin
grate. Streets Division crews
are out on a regular basis to
repair catch basins and the
resulting sinkholes. Once the
catch basin has been repaired,
the affected areas of asphalt
are cut out and new asphalt is
put down. In some cases,
once the sinkholes have been m..
patched, asphalt is placed `w` `:
around the patches to correct
for slope and grade
inconsistencies caused by the damaged catch basin.
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