Wednesday, February 1, 2017 The Nugget Newspaper, Sisters, Oregon
ROADpWORK:pRumble
strips are among slated
improvements
Continued from page 1
of Oregon’s transportation
system and a major east-
west freight corridor across
Oregon. This section of high-
way is also an important com-
muter route between Sisters,
Redmond, and Bend.
Over the past five years,
this stretch of highway has
reported over 150 crashes,
with 10 percent being fatal
or severe. The purpose of the
project is to improve road-
way conditions and safety by
installing centerline rumble
strips, preserving pavement,
making intersection signing
improvements, and painting
striping along this section of
highway.
Rumble strips are an
effective countermeasure for
reducing roadway-departure
crashes. The noise and vibra-
tion produced by rumble
strips alert drivers when they
leave travel lanes.
Several different kinds
of rumble strips are typi-
cally installed on a roadway.
Centerline rumble strips are
installed at or near the cen-
terline of an undivided road-
way, and may be comprised
of either a single or double
line of rumbles. They reduce
cross-centerline crashes
such as head-on collisions,
sideswipes, and some run-
off-road left crashes. Where
wide enough, shoulder rum-
ble strips are installed on a
shoulder near the edge of the
travel lane. They significantly
reduce run-off-road crashes.
According to ODOT,
research has shown that
installing rumble strips can
reduce severe crashes. In fact,
on rural two-lane roads, like
US20, the installation of rum-
ble strips can reduce head-on
and sideswipe fatal and injury
collisions by 45 percent.
The unusual noise tires
make as they cross over rum-
ble strips keeps drivers alive
– but it may also keep neigh-
bors awake. To fulfill their
purpose, rumble strips must
make enough noise inside
the vehicle and tires must
drop into the rumble to cause
enough vibration to get the
driver’s attention.
Due to roadway width
restrictions and to reduce
noise caused by the rumble
strips, ODOT will install cen-
terline rumble strips through-
out this project except in
Tumalo and within the city
limits of Sisters.
Work will include grind-
ing and inlaying pavement,
sign installation, durable
striping, rumble strips, and
guardrail along the highway
beginning in Sisters at the
junction of US20 and OR126
where the truck scales are
located, to Highway 20 mile-
post 14.96 — the Deschutes
River bridge in Tumalo.
Motorists will need to
expect up to 20-minute delays
between the hours of 8 p.m.
and 7 a.m., under the control
of flaggers. The project cost
will be approximately $3.8
million, with High Desert
Aggregate as the contractor.
A second project, slated
to start in June 2017 and end
September 2017, is drainage
and pipe work between US20
milepost 80.88 (just east of
the Santiam summit) to mile-
post 87.22 (east end of Suttle
Lake).
The purpose of this proj-
ect is to address the multiple
drainage issues that arise
during rapid snow-melt run-
off, when the existing snow
banks prevent this runoff
from reaching the ditches and
drainage structures. During
the condition, this runoff
causes flooding, landslides,
and hydroplaning problems.
The project will add shoul-
der inlets, cross-culverts, and
ditch inlets to improve drain-
age capacity and protect the
culverts during winter main-
tenance operations.
Motorists can expect up to
20-minute delays controlled
by flaggers, mostly at night,
to reduce the impact on sum-
mer traffic. Construction cost
is $1,235,000.
Work slated for spring/
summer 2018 will take place
on Highway 20 west of
Sisters from Jack Lake Road
to Railway Avenue in Sisters
— approximately 12 miles of
highway. The pavement in
this section is deteriorating
rapidly, according to ODOT.
Quality: the result of high intention, sincere
effort, intelligent direction, skilled execution
31
PHOTO BY JERRY BALDOCK
ODOT Project Manager Bob Townsend explains facets of the roundabout
project to Sisters residents during the open house held last week.
The existing pavement con-
tains significant cracking and
has begun to “ravel” (lose
surface rock).
The purpose of the project
is to improve roadway condi-
tions and safety by preserving
pavement, placing durable
striping, installing signs, and
constructing rumble strips
along this section of highway.
ODOT will install center-
line rumble strips throughout
this project except within
the city limits of Sisters.
Shoulder rumble strips will
only be installed where there
is adequate shoulder width.
Delays for motorists will
be up to 20 minutes between
the hours of 7 p.m. and 7 a.m.,
under the control of flaggers.
The project will go out for bid
in fall 2017 with construction
occurring between June and
October 2018.
For more information on
the Jack Lake Road – Railway
project or the Highway 20
work from Sisters to Tumalo
this summer, contact Abbey
Driscoll, community liai-
son, at 541-388-6064. For
information on the Santiam
Summit to Suttle Lake drain-
age project or the Highway 20
roundabout, contact Robert
Townsend, construction proj-
ect manger, 541-388-6252.
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