COTTAGE GROVE SENTINEL • FEBRUARY 20, 2019 • 7A
Bridge
from A1
the bridges requires recoating of
the rails to stave off rust as well as
repairs and replacements of rail an-
chors and damaged concrete. Years
of built-up moss and debris will also
likely be power washed from some
concrete rail elements to make way
for a new coat of paint.
Some approaches to the bridg-
es and their decks have also fallen
into disrepair, requiring them to
be resurfaced and repaved. On top
of this, the deck of the Main Street
Bridge will receive a polyester-poly-
mer concrete overlay, material de-
signed to protect bridge decks from
the infi ltration of corrosive deicing
salts and reduce long-term mainte-
nance costs.
Th e report also identifi ed the
need to repair riprap at the Harrison
Bridge. Riprap is a barrier of large
rocks which protects land from ero-
sion from bodies of water, such as
at bridge abutments. Plans for the
repair include steps for preventing
the riprap material and grout from
entering the stream.
Finally, a signifi cant improve-
ment to the underside of the Main
Street and Silk Creek bridges will
include construction of cut-off walls
underneath the ends of both bridges
where large voids have been carved
out by erosion, destabilizing the top-
side approaches.
As the project moves forward,
some work items may be subject to
change.
Tentative plans are to start con-
struction sometime mid-March and
a contractual deadline for comple-
tion has been set for May 24.
During that time, an impact on
traffi c is expected.
Special regard is being given to
the Main Street bridge and the po-
tential impact on businesses. Even
with a full closure of the bridge, it
could take up to fi ve business days
to complete the project. Flagging
traffi c through one lane may extend
the construction period to around
two weeks but will also have the
least impact on traffi c to the down-
town area.
“With Silk Creek and Harrison,
I’m mostly concerned about, num-
ber one, fi re and ambulance – so
EMS – and the school district,” Sis-
son said. “So, I’m not going to back
down on keeping one lane open.
Th ey must stay open.”
Harrison’s width may even allow
for squeezing half of the bridge into
a two-lane throughway.
On top of some slower traffi c at
the construction sites, the approach-
es to each bridge also need work that
extends to varying lengths depend-
ing on the bridge. While the Main
Street and Silk Creek bridges will
get transitional road work 25 feet
extending from either side, Harri-
son will need work as far as 45 feet
on its west side and about 60 feet to
its east.
Current plans for approach work
will place construction in front of at
least one residence at the Harrison
bridge and in front of the Old Mill
Farm Store by Silk Creek.
As of the time of this article’s sub-
mission, outreach plans are still in
motion to contact the concerning
properties and raise public aware-
ness.
“We’re making sure people have
an avenue to raise concerns and
complaints and then respond quick-
ly and have a positive impact despite
the inconvenience,” Sisson said.
Two public meetings are sched-
uled at Stacy’s Covered Bridge
Restaurant to facilitate public dis-
cussion. A Rotary Club meeting is
set for noon on Feb. 25 and an open
house display of the project is sched-
uled for March 5 from 5 to 7 p.m.
Sisson emphasized a desire to
minimize impact on the daily oper-
ations of the city.
“We’re going to be reviewing
temporary traffi c control as we
move forward to keep traffi c fl ow-
ing as a priority,” he said.
Updates on construction infor-
mation can be found at www.cot-
tagegrove.org/publicworks/page/
construction-corner.
DAMIEN SHERWOOD/COTTAGE GROVE SENTINEL
Erosion has eaten away at infi ll under the bridge, causing a void to form under the roadway. A cut-off wall will be installed to prevent further erosion and protect the roadway from further
topside destabilization.
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