HomeMy WebLinkAboutGeneral Plan Conformance GPC2010001 - Project DescriptionCity of Huntington Beach
Newland Avenue Widening & Storm Drain
Summary:
The City of Huntington Beach is currently finalizing the design for a project that will widen Newland
Street from Pacific Coast Highway to Hamilton Avenue.
Newland street right-of-way is 80'wide from the intersection of Pacific Coast Highway to
approximately 700' north of the intersection, where the Right of Way changes to 40' East of centerline
and 20' west of Centerline. This section of Newland Street is a popular path used by pedestrians and
bicyclists to access the beach. Currently there is only a single lane of travel in each direction with no
sidewalk or bike lane for a majority of the distance within the project area.
Additionally, a significant grade differential exists where Newland Street crosses the Huntington
channel. This grade differential creates a significant stopping sight distance deficiency at the
intersection of Newland Street and Edison Way, as cars traveling south on Newland Street do not have
sufficient time to react if another car has stopped to make a left hand turn onto Edison Way.
The City's objective is to widen Newland Street, from Pacific Coast Highway to Hamilton Avenue,
from the current width to a 44' - 48' wide traveled way section, with bike lanes, a sidewalk and center
striped median. The proposed widening will also address stopping sight distance deficiency, by raising
the road grade at the Huntington Channel and providing a left turn lane at the intersection of Newland
and Edison Way. As part of the widening, 2 existing streetlights will be relocated, and 3 additional
streetlights, similar to those existing, will be installed along the east side of Newland, per City of
Huntington Beach standards.
It is anticipated that construction will occur in the Fall of 2006, and take approximately 6 to 8 months
to complete.
The proposed widening improvements will impact the existing drainage along Newland St., requiring
an unimproved drainage ditch to the east of the roadway to be replaced. The drainage ditch has had a
history of problems, as there is no natural outlet for this ditch.
In previous years, the City had a pump system set up at the downstream end of the ditch to
automatically turn on and pump the stormwater from the ditch, through a force main, to a culvert
located at the intersection of Newland Street and Pacific Coast Highway. A few years ago, when there
was concern over high bacteria levels within the coastal waters, the city removed the automated pump
system during the dry season, to eliminate the ditch as a possible source of bacteria. The City would set
up a temporary pump system during storm events to keep the ditch from flooding Newland Street.
It is proposed to replace the existing unimproved drainage ditch with a 39"RCP storm drain.&
associated catch basins. This will eliminate the need for a pump/force main to provide the drainage for
Newland Street from the Huntington Channel to Pacific Coast Highway. In addition, the City will be
installing a sewer line stub connecting into the OCSD Trunk Main in Newland Street, at the
i
0
intersection of Newland & Edison for a future relocation of the existing sewer line serving the
properties along Edison Way into the existing right-of-way.
A Reinforced Concrete Box (RCB) acts as a bridge where Newland Street crosses the Huntington
Channel. In order to accommodate the road widening, the ends of this box must be lengthened within
the channel, requiring the removal of the headwalls on the upstream and downstream ends, and
forming and pouring of extensions to the ends of the RCB.
The county recently completed a significant capacity expansion of the Huntington channel, by driving
sheet piles along the banks and removing fill, converting the channel from an earthen walled
trapezoidal channel to a rectangular steel walled channel. The County stopped their sheet piling
approximately 20' short of the Newland Street Bridge on both the upstream and downstream sides, in
order to accommodate for the City's widening of the bridge. In order to provide interim protection of
the existing bridge against erosion, the County placed Rip Rap to prevent scouring around the headwall
of the RCB. As part of this project, the City will remove the rip-rap material placed within the channel
during the County's recent work on the Huntington Channel, and clean out any sediment that
accumulate within the existing RCB cells.
As part of the bridge widening within the Huntington Channel several existing utilities hung on the
side of the existing RCB shall be relocated to pass underneath the expanded portion of the RCB. These
utilities include a privately owned fuel line, and a City owned 12" water main. In addition the City will
be installing a 36" steel sleeve underneath the upstream section of the lengthened RCB to minimize the
impact to the channel for a future Water Transmission main.
Work within the channel will require the use of an excavator to remove the existing rip-rap material
and to clear a portion of the channel floor to form the RCB extensions. Temporary dams or some other
method of isolating the RCB from the channel flow will also be required to facilitate the construction
of the lengthened sections. The method used will be at the contractors discretion, but could include the
use of inflatable dams.
•
Newland Street
Widening Project
Map prajucad by information contained in the Ciry of
Huntington Beach Information 5ervir.es Department
Geographic Information System Information warranted or
City use only Huntinglon Beam does not guarantee its
completeness or arcurary
Map Prnducedom 71517006
) 369 7311
STREET NAMES
CITY BOUNDARY
W
STREET CENTERLINES ICLASSI
, Smatt f.meet
Major
Collector
Primary
Secondary
Residential
Travrlwav
Allev
ISUBATHS
HARBOR
0
)ne inch equals 169 feet