HomeMy WebLinkAbout06-SCL Creston-Talbot_Construction Mitigation Descriptionhdrinc.com 500 108th Ave NE, Suite 1200, Bellevue, WA 98004-5549
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SCL Overhead Creston-Talbot Fiber Project
Request for Variance from Undergrounding Utility Line
Construction Mitigation Description
1.Proposed Construction Dates: November 2nd, 2015 through December 14th, 2015
2.Hours and Days of operation: work crews will work on weekdays only, during normal day working
hours. Exceptions to this will be during construction of spans over major transportation crossings
(Interstate [I-] 405) that may require work during late or early hours and/or on weekends to limit
impact to traffic as much as practical. Seattle City Light (SCL) will notify property owners adjacent to
the SCL right-of-way (ROW) 2 weeks prior to the commencement of construction work.
3.Proposed Hauling/transportation routes: Routes will be limited to roadways adjacent to the SCL
project ROW, and on roads to and from SCL designated staging sites.
4.Measures to be implemented to minimize dust, traffic, and transportation impacts: No dust
mitigation measures have been considered, as ground disturbance will be minimal for this project.
Most construction work occurs at existing structure locations, and most structures are located away
from major roadways, so construction work can progress without major impact to traffic. Most major
equipment setups will occur in parking lots, open field (within SCL ROW), and on small non-arterial
streets. If traffic control is necessary at these locations, then proper signage, flagging personnel and
cones will be in place to clearly route traffic around equipment. Major overhead crossings for this
project include the Burlington Northern Santa Fe (BNSF) railroad crossing and the I-405 crossing,
and the requisite permits have been submitted to these agencies (including traffic control plans and
safety measures).
5.Special hours: work outside of normal weekday hours (e.g. weekend(s) and/or early or late hours in
morning or evening) may be necessary to negotiate the I-405 crossing. This is to ensure as small an
impact to traffic as is practical. The traffic control plan submitted to WSDOT consists of a proposed
coordinated rolling slow down with local law enforcement to allow a brief duration of time sufficient to
transport a pulling line from one side of the interstate to the other on foot. Other than this crossing,
work during special hours is not anticipated.
6.Preliminary traffic control plan: On streets within Renton that may require traffic control, one side of
the road would be closed off (through usage of cones and signage) and flaggers would be placed to
direct traffic through the remaining portion of open roadway. As noted above, SCL will notify property
owners along ROW in advance of construction as a proactive measure to help lessen impacts to local
Renton traffic.