HomeMy WebLinkAbout2011-03-08 - AGENDA REPORTS - MCBEAN BRIDGE PROJ S1037 (2)CONSENT CALENDAR
DATE:
SUBJECT:
DEPARTMENT:
Agenda Item: 7
CITY OF SANTA CLARITA
AGENDA REPORT
City Manager Approval
Item to be presented by:
March 8, 2011
— e_ , " _-�- I
Curtis Nay
MCBEAN PARKWAY BRIDGE WIDENING OVER THE SANTA
CLARA RIVER, PROJECT S1037 - AWARD DESIGN
CONTRACT
Public Works
RECOMMENDED ACTION
1. City Council award the environmental consulting services and design contract to Dokken
Engineering for the McBean Parkway Bridge Widening Over the Santa Clara River, Project
S1037, in the amount of $954,465, plus a contingency in the amount of $143,170, for a total
contract amount not to exceed $1,097,635.
2. Authorize the transfer of $425,000 from Expenditure Account S1003303-5161.001 to
Expenditure Account S1037303-5161.001.
Authorize the City Manager or designee to execute all documents, subject to City Attorney
approval.
BACKGROUND
The McBean Parkway Bridge over the Santa Clara River was constructed in 1985 with three
lanes in the northbound direction and three lanes in the southbound direction. A fourth
northbound lane was added in 2009 by re -delineating a portion of the striped center median to
provide interim traffic relief until the bridge widening is completed. The existing bridge
measures 590 feet long by 102 feet wide.
Immediately north and south of the bridge, McBean Parkway has already been widened to its
ultimate eight -lane section. Lanes are delineated with the existing paved area to accommodate
safe and efficient traffic flow through the transitions. McBean Parkway is a major arterial
roadway with increasingly severe traffic congestion, particularly during the evening commute
hours.
A PROVED
The McBean Parkway Bridge Widening project mitigates several independent but related
deficiencies in the McBean Parkway corridor, from Avenue Scott to Creekside Road and within
the City trail system. McBean Parkway is a major arterial roadway with increasingly severe
traffic congestion, particularly during the evening commute hours. The existing bridge does not
have barriers separating high speed vehicular traffic from pedestrians on the sidewalks. The
Santa Clara River Trail exists both east and west of McBean Parkway. However, currently there
is no direct connection under the bridge, forcing trail users to make a circuitous connection
through the nearest roadway intersections. Also, no direct trail connection currently exists
between the Santa Clara River Trail and the South River Trail.
The current Level of Service is "D." Level of Service (LOS) is a measure of the quality of traffic
flow through an intersection or along a roadway segment. LOS "A" represents free flow
conditions with minimal delay to motorists. LOS "F" represents severe traffic congestion with
gridlock conditions. This project will improve the deficiencies by widening the existing
102 -foot -wide bridge by 31 feet, allowing for the addition of a fourth southbound travel lane,
which will raise the LOS to "C." A direct connection between segments of the Santa Clara Trail
will be constructed beneath the McBean Parkway bridge and a new 16 -foot -wide Class I Trail
will be installed on the bridge, which will be protected by a barrier. The Class I Trail on the
bridge will provide a new direct trail connection from the Santa Clara River Trail to the South
River Trail. An additional beautification improvement is the construction of a landscaped median
from Avenue Scott to Creekside Road.
Staff prepared a Request for Proposal (RFP) for this project. The purpose of this RFP was to
obtain the services of a qualified civil engineering firm to prepare complete plans, specifications,
and estimates for construction.
The RFP was sent to the firms on the City's Design Consultants List. On December 8, 2010, the
following four firms submitted proposals:
Rankin Company Location Design Cost
1 Dokken Engineering Folsom, CA $1,097,635
2 Tetra Tech Irvine, CA $1,125,508
3 CH2M Hill Santa Ana, CA $1,216,886
4 Biggs Cardosa Associates, Inc. Orange, CA $1,008,338
California Government Code 4526 prescribes selection of architectural and engineering services
to be based on demonstrated competence and professional qualifications necessary for the
satisfactory performance of the services required and does not authorize the selection of
professional architectural and engineering services based on cost.
Dokken Engineering's proposal demonstrated the necessary professional qualifications and full
understanding of the project with recent experience on similar projects in the City and the ability
to meet an aggressive design timeline. The firm's experience includes the Bouquet Bridge
Widening Over the Santa Clara River, Golden Valley Road Bridge Over the Santa Clara River,
and Wiley Canyon Road Bridge Over the Santa Clara River South Fork. Furthermore, a majority
a
of the work performed on this project will be completed in-house by Dokken Engineering and
not involve other subcontractors. Dokken Engineering is a civil engineering firm with an
in-house environmental division that will prepare the environmental document. Both teams
working at the same firm will help coordination efforts on the two key components of this
project. The City was able to reach an agreement with Dokken Engineering at a fair and
reasonable price.
The proposal amounts include a contingency and tasks necessary to complete the bridge
widening design.
ALTERNATIVE ACTIONS
Other action as determined by the City Council.
FISCAL IMPACT
The requested appropriations, combined with current available budget, will provide for all
anticipated costs.
Previously Appropriated
New
Total
Account
and Available
Appropriations
Available
51037238-5161.001
$6,045
$0
$6,045
Bikeway Funds
S1037238-5161.001
$79,602
$0
$79,602
Transportation Development Act Article 3
S1037260-5161.001
$426,420
$0
$426,420
Proposition C Local
S1037303-5161.001 $263,242 $425,000 $688,242
Valencia Bridge and Thoroughfare
District Fund
Totals: $775,309 $425,000 1,200,309
ATTACHMENTS
Location Map
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