HomeMy WebLinkAboutSS3 - West Coast Highway Widening• April 26, 1999
CITY COUNCIL STUDY SESSION
ITEM NO. SS3
TO: Mayor and Members of the City Council
FROM: Public Works Department
SUBJECT: WEST COAST HIGHWAY WIDENING (TUSTIN AVENUE TO
RIVERSIDE AVENUE) PLAN REVIEW
INTRODUCTION
During the City Council meeting of March 22, 1999, Councilmember Ridgeway
requested a report from staff on the congestion in the Mariner's Mile area and
information on possible improvement projects for this area. The following discussion
covers the present as well as expected congestion levels and the type of improvements
that have been identified, including estimates of right -of -way and construction costs.
PROPOSEDIMPROVEMENTS
The Circulation Element of the General Plan establishes the long range program for the
configuration of the arterial streets in Newport Beach. For Mariners Mile, it calls for
three through lanes in each direction and additional turn lanes on both Coast Highway
and Riverside Avenue at their intersection. This cross section requires 112' of right -of-
way compared with the original Coast Highway width of 100'. Near Riverside Avenue
the street must be widened an additional 6 -8' for an added left turn lane. Portions of
the additional right -of -way have been required through dedications associated with
redevelopment of various parcels. Other new developments have been set back to
accommodate the widening.
It should also be noted that the proposed cross section includes the removal of parking
on the inland side of Coast Highway while maintaining a parking lane on the bay side of
the road. The City developed the Mariners Mile Parking Lot partly to offset any future
loss of parking in this area. This parking lot is underutilized and can easily
accommodate any displaced parking.
Exhibit 1 shows the anticipated layout for the portion of Mariners Mile from west of
Riverside Avenue to east of Tustin Avenue. Signalized intersections are typically the
controlling factors on a roadway's capacity, so more effort has been focused on the
area near the Riverside and Tustin intersections.
SUBJECT: West Coast Highway Widening (Tustin Avenue to Riverside Avenue) Plan Review
April 26, 1999
Page 2
The specific improvements include:
1. Adding a 3rd eastbound through lane on Coast Highway for about 1100'.
2. Adding a 2nd eastbound left turn lane on Coast Highway at Riverside Avenue.
3. Adding a 2nd southbound right turn lane on Riverside Avenue at Coast Highway.
The current estimated costs for the improvements shown on Exhibit 1 are $1,000,000
for right -of -way and building modifications and $1,200,000 for the roadway
modifications.
CONGESTION ISSUES
Intersection Capacity Utilization (ICU) is the ratio of the traffic using an intersection to
that intersection's overall capacity and typically is calculated for the busiest one hour
during the morning and afternoon traffic peaks. ICU is an indicator of the level of
congestion at a signalized intersection. The Circulation Element identifies an ICU of
0.90 as the maximum desirable level for Newport Beach intersections. This value
represents the upper limit of what is also known as Level Of Service D(LOS D).
The last traffic count at the Riverside Avenue intersection was taken in 1997. At that
time both the AM and PM peak hour ICU values were 0.75. The Tustin Avenue
intersection was counted in 1998 and the AM ICU was 0.65 and the PM ICU was 0.78.
The City uses its transportation model to predict traffic patterns based upon the future
land use and circulation system. The model looks 20 to 25 years in the future for long
range planning purposes.
The year 2020 ICU's have been modeled for the two intersections. If Coast Highway is
widened to have three through lanes in each direction and a second eastbound left turn
lane at Riverside Avenue, the AM ICU is 0.83 and the PM ICU is 1.11 at the Riverside
intersection. If a second right turn lane from Riverside is also added, the AM ICU drops
to 0.73 and the PM ICU is 0.86. With both improvements, the intersection would meet
the goal of LOS D. If no improvements are made to the existing configuration, the AM
ICU would be 1.00 and the PM ICU would be 1.30.
The Tustin Avenue intersection is expected to have an AM ICU in year 2020 of 0.78
and a PM ICU of 0.72 if Coast Highway has a third eastbound lane added. Without this
improvement, the AM ICU is 1.03 and the PM ICU is 1.01.
The daily traffic volumes on Coast Highway between Dover Drive and Newport
Boulevard range from around 50,000 near Dover Drive to approximately 57,000 near
Newport Boulevard. The City's transportation model projects increases of 15,000 to
20,000 daily trips by the year 2020 on this segment of Coast Highway as a result of
development in the City and surrounding region.
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SUBJECT: West Coast Highway Widening (Tustin Avenue to Riverside Avenue) Plan Review
April 26, 1999
Page 3
• During the morning peak period eastbound traffic frequently backs up from Riverside
Avenue to Balboa Coves and beyond. This could be mitigated by adding a third
eastbound through lane, a second eastbound left turn lane and a second right turn lane
from southbound Riverside Avenue. In the evening peak period, westbound traffic
regularly backs up almost to Dover Drive. This congestion would be relieved by the
addition of the second eastbound left turn on Coast Highway and the second right turn
lane on Riverside Avenue.
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Both residential and commercial segments of the community have expressed concerns
over the proposed widening in the past. Due to these concerns there has been little
effort expended on this concept during the past ten years.
There have been discussions about solving the congestion problems by simply
restriping the existing pavement and eliminating parking. Attached is a 1994 memo
from the City Engineer to the City Manager that discusses the practicality of that
approach.
Respectfully sub tted,
6
PUBLIC WORKS DEPARTMENT
Don Webb, Director
By:w eU�
Richard Edmonston
Transportation and Development Services Manager
Attachments: Preliminary Plan
Memo dated May 23, 1994
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May 23, 1994
To: City Manager
From: City Engineer
Subject: Mariners Mile - Coast Highway Widening
In a Daily Pilot Community Forum article on May 21, 1994 (copy attached), Jan
D. Vandcrsloot suggested that the master plan 6 lane configuration for Coast
Highway between Dover Drive and Ncwport Boulevard can be accomplished by
prohibiting parking and restriping the roadway without any widening. He states
"Caltrans engineers say there is currently room on Coast Highway to do this.
including room for left turn lanes, if on street parking on the north side is
removed."
When Mr. Vandcrsloot brought this subject up a little over a year ago, the
Caltrans engineers reviewed the parking prohibition and restriping to six lanes in
connection with the design of the pavement reconstruction project currently
under construction. Thcy also reviewed studies that the City had done in 1983
and 1988 and determined that it was not feasible to restripe to six lanes with their
project.
The curb to curb street width needed for a standard six lane roadway with two -
way turn lane and bike lanes is 94 feet. When this is combined with nine foot
sidewalks for pedestrians, the right of way .width required is 112 feet. The
standard vehicular lane width is 12 feet and a bike lane bethvecn the curb and
gutter and the traveled way is required to be 5 feet wide. Coast Highway has Dive
different curb to curb widths between Dover Drive and Ncwport Boulevard:
Se ement
Segment Length
Width
Dover Drive to 350 Ft. westerly
350 I't.
11711.
(Has 6 lanes w/ 3 turn lanes)
350lect westerly of Dover to the Pelican Wall
3300 It.
80 It.
(Has 4 lanes w/ 2 -way turn lane)
The Pelican Wall to Riverside Avenue
2(A)0 It.
88 It.
(Has 5lanes w/ 2 -way center lane)
Riverside Avenue to the Arches
1100 It.
82 It.
(Has 5 lanes w/ 2 -way center lane)
In Iront of the Arches the right of way is to lest less than to the Gut
When parking is removed from Coast Highway, it will be necessary to acquire •
the space necessary to replace the parking. Striping six lanes with parking
prohibitions on the existing roadway section would require substandard, narrow
lanes with little or no provisions for bicycles.
In 1983 the City prepared an EIS for the widening of Coast Highway between
MacArthur Boulevard and Bayside Drive. Since Federal funding was involved
and the project was on a State Highway, the EIS required FHWA and Caltrans
format and approvals. Thcy also required that the scope of the study area be
expanded to cover Coast Highway between Baysidc Drive and Newport
Boulevard. In this EIS a parking prohibition and restriping alternative was
discussed which used six, ten foot wide travel lanes because no funding was
available for widening. Because of concerns from the community the following
statement was placed in the document: "The highway is to be monitored closely
and implementation of any restriping and parking restriction program will be
considered only after appropriate City of Newport Bcach /Caltrans concurrence
with notice and an opportunity to be heard given to those affected." The
restriping alternative was considered to be an interim improvement, if needed,
before Coast Highway could be widened within 112 feet of right of way. This
EIS is probably the document that Mr. Vandcrsloot refers to when stating that
Caltrans engineers say there is room for six lanes. •
A copies of the EIS pages and cross - sections for the six lane restriping alternative
arc attached for your information.
Attachments
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Report Number: FHWA -CA- EIS- 83 -01 -F
Pacific Coast Highway Improvement
Proposed Improvement of Traffic Flow Along Pacific
from MacArthur Boulevard (Route 73) to Newport
City of Newport Beach, Orange County,
SCH No.: 80121179
07 -Ora -10
Project
Coast Highway (Route 1)
Boulevard (Route 55),
California
FINAL
ENVIRONMENTAL IMPACT STATEMENT
VOLUME I
S. DEPARTMENT OF TRANSPORTATION
Federal Highway Administration
and
STATE OF CALIFORNIA
Department of Transportation
and
CITY OF NEWPORT BEACH
Pursuant to: (State) Division 13, Public Resources Code; (Federal) 42 U.S.C.
4332(2)(C).
otz�jndl
FOR enJamin No an
Public Works Director
City of Newport jBeach
CGr-s4 kl �Cii
illiam Blac r, Chief
Environmental Analysis Division
California Department of Transportation
1,611", CAS .dam E Ut L
Federal Highway AdminislValtion
Region 9
ABSTRACT
Dc-cF E 2? 1983
Date
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Date
b"& -e.. /�, 19t/ y
Date
Improvements to Pacific Coast Highway (SR -1) from MacArthur Boulevard (SR -73)
to Newport Boulevard (SR -55) are proposed to provide and facilitate improved vehicu-
lar circulation; improve travel speeds; reduce the traffic accident rate; and provide
improved facilities for public transportation and alternative modes of travel.
Impact associated with the project is residential (mobile homes) displacement.
The following individuals may be contacted for additional information concerninq
the proposal and Environmental Impact Statement:
•
C. Glenn Clinton
Federal Highway Administration
P.O. Box 1915
Sacramento, California 95809
(916) 440 -2804
Wayne Ballentine
Department of Transportation
Environmental Planning
120 South Spring Street
Los Angeles, CA 90012
(213) 620 -5335
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Improved Transit Service, and Alternative C - No Project. All of these alter-
natives were considered and a preferred alternative was selected following the
environmental /design review and public review process.
Alternative A, comprised of Design Alternatives A -1, A -2, A -5, and A -8,
is the preferred alternative. Alternative A proposes to substantially improve
peak - period traffic flow and travel speeds, increase roadway capacity, and
reduce accidents by widening the existing roadway facility to its ultimate
planned width from MacArthur Boulevard to Bayside Drive, and by adding travel
lanes within the existing right -of -way from Dover Drive to Newport Boulevard.
This alternative would fully implement the City of Newport Beach and County of
Orange Circulation Elements for the section from MacArthur Boulevard to Bay -
side Drive. It would also provide for increased bike lane facilities from
MacArthur Boulevard to Bayside Drive. The alternative would improve the abil-
ity to provide fast and reliable bus service alonq the project route by reduc-
ing congestion and increasing travel speeds.
The Alternative A proposal between Dover Drive and Newport Boulevard
would add roadway capacity within the existing right -of -way. The implementa-
tion is to be staged as needed up to the restriping of the entire section of
road with or without full or peak - period only parking restrictions. The City
• anticipates extensive redevelopment of the properties on the northerly side of
Pacific Coast Highway between Dover Drive and Newport Boulevard. All new
development on the northerly side is being required to dedicate 12 feet of
right -of -way. It is probable that the multiple parcels between Dover Drive
and Rocky Point will be combined into two or three parcels and developed at
one time. The ultimate roadway cross - section (112 -foot right -of -way width)
would be constructed by this redevelopment. While this portion of the
alternative does not provide the same level of improvements to traffic service
as the portion to be widened between MacArthur Boulevard and Bayside Drive, it
is considered an improvement over existing conditions and an interim measure
until the road can be widened through adjacent redevelopment. This section of
roadway will be monitored closely. Implementation of any restriping and park-
ing restriction program will be considered only after appropriate City of New-
port Beach /CalTrans concurrence.
Alternative B proposed expansion of existing bus service along Pacific
Coast Highway. Alternative C proposed that neither Alternative A nor B occur
to meet the proposed needs of the project.
Environmental Consequences. Table A provides a summary comparison of
the environmental consequences of the three alternatives. As shown, a few
significant adverse impacts which are not completely mitigated are associated
with the alternatives under consideration. The only significant adverse
impact associated with Alternative A is the potential disruption of mobile
home residents and their community by displacement of 21 mobile homes (under
. Design Alternative A -5). This is partially mitigated by the relocation assis-
tance which will be available.
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7a
Design Alternative A -8- Addition of
Travel Lanes within Right -of -Way
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The improvements proposed within design alternative A -8 consist primarily
of restriping Pacific Coast Highway to provide three narrower through- travel
lanes and bike lanes in each direction between Dover Drive and Newport Boule-
vard.
Implementation of restriping the roadway to six lanes within the existing
76 to 88 -foot curb -to -curb widths would provide -for curbside parking along the
south side (ocean side) from Riverside Drive to Rocky Point. The existing
curb -to -curb width within this area is 88 feet. All other areas would require
the removal of on- street parking. Existing curb -to -curb widths in these areas
range from 76 to 88 feet. Typical cross - sections are illustrated on Figure
7b. Overall, a total of 180 out of 208 on- street parking spaces would be
removed.
Ultimate widening improvements will be implemented with redevelopment
along the northerly (inland) side as discussed on Page 18. Implementation of
design alternative A -8 between Dover Drive and Newport Boulevard may be neces-
sary at some time prior to redevelopment of the area and implementation of
ultimate widening improvements. Design alternative A -8's implementation is to
be staged with restriping as needed up to the restriping of the entire section
with or without full or peak - period parking restrictions.
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The most probable first stage would be a restriping to six travel lanes
with partial and /or full time parking restrictions for the most critical sec-
tion of roadway (400 feet east of Tustin Avenue to State Route 55). The high- •
way is to be monitored closely and implementation of any restriping and park-
ing restriction program will be considered only after appropriate City of
Newport Beach /CalTrans concurrence with notice and an opportunity to be heard
given to those affected.
• 34
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7b
Design Alternative A -8
Typical Cross - Sections
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7b (continued)
Design Alternative A -8
Typical Cross - Sections
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