Department of Public Works
Bureau of Engineering
Bureau of Street Services
Joint Report No. 1
August 5, 2016
CD Nos. 8 and 10
REQUEST FOR AUTHORITY FOR A TEMPORARY DIRECTIONAL CLOSURE OF SOUTHBOUND
ARLINGTON AVENUE FROM JEFFERSON BOULEVARD TO W 35TH PLACE TO FACILITATE
CONSTRUCTION OF THE ARLINGTON AVENUE AND JEFFERSON BOULEVARD DIVERSION
SEWER PROJECT (WORK ORDER NO. SZC12484)
RECOMMENDATION
Authorize the directional closure of southbound and one northbound traffic lanes in
Arlington Avenue between Jefferson Boulevard and 35th Place, for up to two months
starting as early as October 1, 2016 for construction of the 42-inch junction structure
portion of the Arlington Avenue and Jefferson Boulevard Diversion Sewer Project.
CONDITION
Permittee shall obtain approval for Worksite Traffic Control Plans (WTCP) and Detour
Plans from the Los Angeles Department of Transportation (LADOT) and the Transportation
Construction Traffic Management Committee (TCTMC).
DISCUSSION
Background
On November 17, 2015, the Board of Public Works awarded a contract
to Colich & Sons, LP in the amount of $3,266,076 with a contingency of $163,304 for
a total approved construction budget of $3,429,380 to construct the C867-Arlington
and Jefferson Diversion Sewer, C921-Jefferson Boulevard-Budlong to Gramercy
Primary Sewer Rehabilitation, and C278-Wilshire Area Olympic Sewer Rehabilitation
Project. The Arlington Avenue and Jefferson Diversion Sewer portion of the project will
construct a diversion structure, a junction structure with a maintenance hole on the
existing 42-inch brick sewer, and one maintenance hole on the 20-inch sewer.
The Jefferson Boulevard-Budlong to Gramercy Primary Sewer Rehabilitation portion of
the project will rehabilitate 981 linear feet of 16-inch sewer and 360 linear feet of 20-inch
sewer. The Wilshire Area Olympic Sewer Rehabilitation portion of the project will
rehabilitate 1,027 linear feet of 27-inch brick sewer, 306 linear feet of 20-inch sewer and
remove and replace 110 linear feet of 20-inch sewer with 21-inch vitrified clay pipe.
During the design phase and preliminary review by the LADOT, it was believed that one
lane in each direction on Arlington Avenue could be maintained during the construction of
the new junction structure and maintenance hole on the existing 42-inch brick sewer in
Arlington Avenue, south of Jefferson Boulevard. However, after review of the contractor’s
Joint Report No. 1
Page 2
proposed shoring plan, the LADOT setback requirements for safe vehicular traffic
and evaluation of several design alternatives, it has been concluded that constructing
the new junction structure will require the closure of three of the four traffic lanes on
Arlington Avenue. The center line of the new junction structure is located on the
lane line between the two southbound traffic lanes and the shoring for the structure will
encroach beyond the centerline of Arlington Avenue, thereby requiring the closure of
both southbound lanes and the No. 1 northbound lane.
Arlington Avenue is designated as an Avenue III (Secondary Highway). In order to
accommodate the southbound directional closure of Arlington Avenue, detour plans
have been prepared and are being reviewed by the LADOT. The plans call for
southbound traffic to be detoured to Western Avenue and Crenshaw Boulevard
via Jefferson Boulevard as shown in Figure No. 1 below.
Figure No. 1 - Detour Plan
Department of Public Works
Bureau of Engineering
Bureau of Street Services
Joint Report No. 1
August 5, 2016
Page 3
This board report will authorize the southbound directional closure of Arlington Avenue
for up to two months starting as early as October 1, 2016. The actual date of the start
of the closure will be set following receipt of approval from the LADOT and the TCTMC.
LADOT Traffic Impact Statement
The LADOT and the TCTMC are currently reviewing the WTCP, signal and
detour plans, all of which identify the construction activities and provide detour
routes for vehicles, pedestrians and transit buses. Although not directly quantified
in the WTCP, traffic impacts and delays that cannot be avoided and may result
in disruption to adjacent road networks can be expected. Other construction
installation options, including a full street closure of Arlington Avenue resulting
in a shortened construction schedule was reviewed; however, it was determined that
the best strategy to minimize overall traffic disruptions would be to provide
a directional closure of the southbound traffic and maintain one lane of northbound
traffic through the construction area. Weekend closures of Arlington Avenue are not
an option as construction work by other agencies supporting this project are
scheduled to be done on weekends. The Department of Water and Power will be
relocating an interfering 6-inch water line and AT&T will be relocating an interfering
duct bank, both of which will be done during the construction of this project. And as
the required excavations for the work are large and will remain open (barricaded
by k-rails and fencing), night work would not improve traffic flow during the day.
Community Support Statement
Sylvia Lacy, District Director of Council District No. 10 and Fernando Montes-Rodriguez,
District Director of Council District No. 8 have been briefed on this requested closure
and voiced no objections. At the request of Council District No. 8, a presentation of the
proposed construction and associated traffic control was given to members of
the North Area Neighborhood Council whose boundaries border the construction site.
The Public Affairs Office, in conjunction with Council District No. 8, Council District No. 10,
the Bureau of Engineering, and the contractor are currently performing community outreach
via communication with the Neighborhood Councils, schools, churches and affected
businesses in the area. Information is being conveyed to the public via websites and
social media and portable message signs will be stationed in advance of the closure.
Joint Report No.1
Page 4
( BWJ RMK KRR GH RL )
Report reviewed by:
Respectfully submitted,
BOE (ADM)
and BSS
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Report prepared by:
Gary Lee Moore, PE, ENV SP
City Engineer
Wastewater Conveyance
Engineering Division
Bradley W. Jenson, PE
Division Engineer
Phone No. (213) 485-4584
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Bureau of Street Services
BWJ/RP/05-2016-0114.WCE
Questions regarding this report
may be referred to:
Richard Pedrozo, Project Manager
Phone No. (213) 485-1638
E-mail : Richard. [email protected]