HomeMy WebLinkAboutAGENDA REPORT 1993 1215 CC REG ITEM 11Di
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AGENDA REPORT yv � /'���r�`�`7
C= T Y O F MOORPARK
Ly
TO: The Honorable City Council
FROM: Kenneth C. Gilbert, Director of Public Works
DATE: December 6, 1993 (Council Meeting 12- 15 -93)
SUBJECT: Consider Authorization to Proceed with a Project for the
Rehabilitation of the Spring Road Bridge
OVERVIEW
The City has been advised that it has received approval of a grant
for the rehabilitation of the Spring Road bridge. This requests
authorization to proceed with the environmental analysis and
preliminary engineering required to develop that project.
BACKGROUND
1. The Spring Road bridge was constructed by Caltrans in 1952 as a
part of construction of the original State Route 23. When the
State Route was relocated to the Moorpark Freeway, Spring Road
(then Moorpark Road) was relinquished to the County of Ventura.
Upon incorporation, this street and bridge became the property
of the City.
2. The inadequacy of this bridge has long been recognized. The
bridge is only twenty -eight feet (281) wide. Although there is
sufficient width to accommodate two lanes of traffic, there are
no provisions for pedestrian or bicycle traffic.
3. The rains of March 1992 raised serious concerns about the
bridge. A substantial volume of debris, including large trees,
collected on the bridge piles impeding the flow of the arroyo to
the point that storm water splashed over the top of the bridge.
The volume and velocity of the storm flows exerted a great deal
of lateral force against the debris and the piles supporting the
bridge. There was concern that these forces might damage or
destroy the bridge.
sprgbrg2
Spring Road Bridge
December 1993
Page 2
4. In April of 1992 the City Council authorized staff
with efforts required to evaluate the condition of
and develop a cost effective improvement program. It
known that the bridge is functionally obsolete due to
width. The proposed analysis would look at the
condition of the bridge and the compatibility of
(pier construction) with storm flow debris.
to proceed
the bridge
is already
its narrow
structural
its design
5. The Spring Road Tierra Rejada Road AOC calls for the
reconstruction of the Spring Road bridge to provide for four
traffic lanes. Later the City Council approved the Carlsberg
Specific Plan which reduced the width of the bridge to
accommodate only two lanes of traffic plus provisions for
bicycles and pedestrians.
DISCUSSION
A. Grant Application
The application of significant resources to the preparation of
a Request for Proposals (RFP) , and the selection of a civil
engineer to perform a structural analysis of the bridge, was
deferred. Attempts were made to determine a proper course of
action through other more cost effective means.
It was learned that the bridge had been inspected by Caltrans
officials and found to be deficient. Bridges are evaluated and
ranked on a number of criteria. A perfect rating receives a
score of 100. A score of 50 or less indicates that the bridge
should be replaced. A score of 80 or less indicates the need
for some type of rehabilitation. The Spring Road bridge
received a score of 70.3.
Staff applied for grant under the federal Highway Bridge
Replacement & Rehabilitation Program (HBRR). Our primary
objective was to have the bridge re- inspected to see if the true
condition of the bridge warranted a score low enough to qualify
for full replacement. If not, our secondary objective was to
see if a grant for rehabilitation could be applied to the cost
of a bridge replacement project.
B. Field Review
On November 18, 1993, there was a Field Review for the project,
attended by City staff and various representatives from
spr4brg2
Spring Road Bridge
December 1993
Page 3
Caltrans. At that meeting a number of issue were discussed and
determined including the following:
• The bridge is functionally obsolete due to its narrow width.
• There are no discernable structural defects.
• It was the opinion of the Caltrans bridge experts that the
bridge was in no threat of damage or destruction by the type
of storm event which occurred in March 1992. Bridges
constructed utilizing this design have been known to remain
standing after the roadway on either side of the bridge has
been washed out.
• The deficiency rating of 70.3 was correct.
• The bridge qualified for a rehabilitation project.
• A bridge rehabilitation grant could not applied to the cost
of a replacement project.
During the Field Review meeting, Caltrans staff explained the
steps required for the City to proceed with a project for the
rehabilitation of the Spring Road bridge.
C. Rehabilitation Effort
1. Present Condition: The Spring Road bridge is generally
described as follows:
- Length:
122'
• Width (curb -to- curb):
28'
• Approach Width:
34'
- Number of lanes:
2
- Bike lanes:
0
• Number of Sidewalks:
2
- Width of Sidewalks:
2'
• Speed Limit:
45 MPH
2. Proposed Project Objectives:
The proposed rehabilitation
project would widen the bridge
to bring the bridge up to
current design standards and better provide for pedestrian
and bicycle traffic. A general
description of the modified
bridge is as follows:
• Length:
122 ±1
• Width (curb -to- curb):
40'
• Approach Width:
40'
• Number of lanes:
2
• Bike lanes:
2
• Number of Sidewalks:
2
- Width of Sidewalks:
6.5'
• Speed Limit:
45 MPH
sprgbrg2
Spring Road Bridge
December 1993
Page 4
3. Design Criteria: The width of the proposed bridge is based
on Ventura County Road Standard B -5a (Exhibit 1). This road
standard is compatible with the designation for this street
set forth in the Circulation Element of the General Plan:
Local Collector (Exhibit 2).
4. Project Description: The bridge re4abilltati0n effort as
tenta�!Vely proposed calls for the widening of the bridge to
the east (upstream) an estimated additional twenty -seven feet
(271) to provide a curb -to -curb width of forty feet (401),
plus sidewalks and bridge railings.
S. Pier Modification: The rehab project would also include the
modification of the structural supports for the bridge by
constructing pier walls to completely enclose the existing
and any future free - standing piers. These pier walls would
extended1nt0 �4� q
iiQ O op 1��l� u NNZ S1� eo��h
LO Bette � e bridge
r divert debris under and aSt the br'
tray ii
N10
MNtry ed on
of the Tierra Rejada Road bridge. It is
that these improvements will prevent the
which occurred in the March 1992 storms.
Klllat
�6 upstream side
the view of staff
type of blockage
6. Cost Estimate: A preliminary cost estimate of this
rehabilitation project is described as follows:
Element
Design: environmental analysis,
surveying, alignment study, right -of-
way (if required), geological analysis,
hydrological analysis, hydraulic
analysis, preliminary desiqn, plans /
specs, bidding phase
Right -of -Way: undetermined
Construction:
Relocation
undet.
Mobilization
45,000
Slope Protection
10,000
Approaches
40,000
Approach Guard Rails
10,000
Structure ( lion cf - , -,n,
� _ _ _
Cost
75,000
Spring Road Bridge
December 1993
Page 5
D. Grant
The HBRR grant program provides for an eighty per cent (80 %)
funding. One question yet to be determined is whether or not
City costs for environmental analysis, right -of -way acquisition,
design and construction engineering can be applied to the twenty
per cent (20 %) local share. It is recommended that the local
match be funded from the Sprinq Road / Tierra Rejada Road AOC.
E. Hydraulic Capacity
One aspect of developing the preliminary design for the project
will be an assessment of present and required hydraulic capacity
of the Arroyo at the bridge crossing. Ideally the Arroyo should
be able to pass a 100 year storm (the volume of stormwater
generated by a storm event likely to occur on an average of once
each one hundred years) at bridge structure. Although the
present Arroyo will not hold a 100 year storm, the channel
improvements proposed by the Ventura County Flood Control
District ( VCFCD) will contain a 100 year storm within the new
channel. The designer for the subject project will be required
to work with the VCFCD to develop a design compatible with these
requirements and objectives.
F. Preliminary Design Efforts
The preliminary design effort will include:
• hydrological analysis
• hydraulic analysis
• geotechnical analysis
• alignment study
• right -of -way needs analysis
• utility relocation requirements
• preliminary design
bridge widening
sidewalks
bridge railing
bike lanes
> training walls
pier enclosures
channel improvements (if any)
sprgbrg2
Spring Road Bridge
December 1993
Page 6
G. Environmental Document
Once the scope of the project is better defined, an
environmental assessment must be performed for this project.
This effort will include an analysis of the environmental
impacts of the project upon the arroyo and the wild life
habitats which surround the project area. The issues to be
addressed include water quality, biological impacts, wetlands,
traffic management, and more.
H. Fiscal Impact
The FY 1993/94 Budget includes $50,000 for preliminary design
costs for this project. It is anticipated that this amount is
adequate for the initial efforts required to prepare the
environmental analysis and preliminary design for the subject
project.
RECONNENDATION
Staff recommends that the City Council take the following actions:
1) Approve the Spring Road bridge rehabilitation project described
in this report.
2) Authorize staff to solicit professional service required to
develop the geotechnical, hyrological and civil engineering data
required and to prepare a preliminary design for this project.
3) Authorize staff to proceed with the
environmental document for this project.
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preparation of an
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2`EI SLOPS 2 % cLOPE % °ro �OP�
I PCC WALK _cc PM5 cr :JAB & JTTEP,J r`
NOTE r;
C�SICN ..r;'- .EPIA
I R GHT OF WAY WIDTH P(F7)
FAVEMEN T WIDTH vVtF`)
CURE RE'jRN RADIUSiFT;
TRAF17IC 'NDEX 200 LOTS StRVEC
TRAF- IC INDEX 141 -20 0 LOTS SERVE,
TRAFFIC INDEX 51 -140 LOTS SEP,VE7_
TRAFFIC 'NDEX 21 -50 LOTS SEPVE
I
TRAFFIC NDEX 20 LOTS SERVED
LOTS SERVED. MAX ;CUL -DE -SAC.
LOT SIZE S 20.000 SF)
I LOTS SERVED MAX !CUL -DE -SAC
LOT SIZE -� 20.000 SF)
LOTS SERVED. MAX (LOOP)
LOTS SERVED. MAX (OTHER)
DES,CN SPEED (MPH)
j CURVE RADIUS MIN(FT)
GRADIENT MIN /MAX( %)
(SEE PLATE B-12 AND NOTE 3)
STOPPING SIGHT DISTANCE(FT)
CJL -DE -SAG LENGTH MAX
(LOTS <_ 20.000 SF)(FT)
CUL -DE -SAC LENGTH MAX
(LOTS > 20.000 SF)(FT)
LOOP LENGTH, MAX(FT)
ADOPTED BY BOARD OF SUPERVISORS FE8 1 9 1991
APP E FEB 12 19 ";
Q DIR PUB WKS
ECO M DED 1 1 2(�e,6s 34
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COUNTY
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PUBLIC
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AGENCY
ROAD STANDARDS
RESIDENTIAL ROADS
URBAN
WITHOUT PARKWAYS
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FiGURE 2
CITY OF MOORPARK
GF.NFRAL PLAIN CIRCUL.NTION ELEMENT
Klay 13 1992
F R CEWAY
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FiGURE 2
CITY OF MOORPARK
GF.NFRAL PLAIN CIRCUL.NTION ELEMENT
Klay 13 1992
A six no on sirccl
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A ",T: ") N
O
I T
CITY OF SAN BUENAVENTURA
511 Pali Street • P.O. Box 99 • `ClltUrnl, Citlifornia • 1) W-2-0090 • (805) 654 -7800 • FAX (805) 652-0865
// Pnnted on recycled paper to help prate, t our environment
PITY COUNCII.
n nr I. \l, n 111
November 15, 1993
Mayor Paul Lawrason,
Jr., President
Channel Counties Di,:
isior
League of California
Cities
City of Moorpark
799 Moorpark Avenue
Moorpark, CA 93021
Dear Mayor
1
awrason:
This letter is in response
to League President Bartlett's November
9, 1993 memorandum
regarding the 1994
State Budget Battle /League
Dues Increase.
The City of Ventura
is in concurrence
as to the ratification of
the proposed 3% dues
increase.
Best regards,
Gr or L. Carson
Mayor
GLC /tt
—' RECEIVED —
NOV 1 9 1993
Gitv of Moorpark
511 Pali Street • P.O. Box 99 • `ClltUrnl, Citlifornia • 1) W-2-0090 • (805) 654 -7800 • FAX (805) 652-0865
// Pnnted on recycled paper to help prate, t our environment