I-405 Sepulveda Pass Widening Project -...
Transcript of I-405 Sepulveda Pass Widening Project -...
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I-405 Sepulveda Pass Widening Projectp g jCommunity Advisory Committee Meeting June 24, 2010
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MWD LA-29 ProjectMWD LA 29 Project
Drilling to install beams for shoring to support excavation at Sunset Bl and Church Ln
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MWD LA-29 ProjectMWD LA 29 Project
Installing 27-foot-long beams for shoring in pre-drilled holes at Sunset Bl and Church LnSunset Bl and Church Ln
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MWD LA-29 ProjectMWD LA 29 Project
d l Beam and plate shoring to support 30-foot by 30-foot by 12-foot deep excavationfoot-deep excavation
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MWD LA-29 ProjectMWD LA 29 Project
Exposing in service 34Exposing in-service 34-inch-diameter steel water supply pipeline in Sunset Bl and 42-in Sunset Bl and 42inch-diameter steel water pipeline in Church Ln
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MWD LA-29 ProjectMWD LA 29 Project
C i d d i Compact equipment used during excavation to protect nearby oak trees
Installation of 36-inch-diameter steel pipe in the LADWP property between Beloit St and Church Ln
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MWD LA-29 ProjectMWD LA 29 Project
Segments of 36-inch-diameter steel pipe arrive at Beloit St
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MWD LA-29 ProjectMWD LA 29 Project
U f ll i ll 36 i h l i h id f B l i S Use of small crane to install 36-inch steel pipe on north side of Beloit St helps minimize impact to community
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MWD LA-29 Project—More Information
C I f i• Contact InformationLocated on back of handout
• Websitewww.ladwp.comp• Search “MWD LA-29”
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Skirball Cultural Center—North Building ProjectSkirball Cultural Center North Building Project
Dates: June 14, 2010 to September 2012Dates: June 14, 2010 to September 2012
Size: 32,000 Sq. Ft.
Location: North part of property on top of North Parking p p p y p gGarage
Type: Cultural and Educational Resource Building
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Skirball Cultural Center—Soil Haul RouteSkirball Cultural Center Soil Haul Route
• General Contractor: Matt Construction• General Contractor: Matt Construction
• Soil to be exported: 9,300 yards
• Construction activity: contained mostly Construction activity: contained mostly on Skirball Cultural Center property
• Dates: July 19 to August 30
• Haul route: Sepulveda Bl. 250 yards south, on Skirball Center Dr. Bridge, enter I-405 North exit SR 126 enter I 405 North, exit SR 126
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Skirball Cultural Center—Soil Haul RouteSkirball Cultural Center Soil Haul Route
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Skirball Cultural Center—Construction ContactSkirball Cultural Center Construction Contact
Ben Elisondo, Director of OperationsSkirball Cultural Center
l d l d2701 N. Sepulveda Blvd.Los Angeles, CA 90049(310) 440-4777( )[email protected]
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Tonight’s Objectives
• Present final landscape and Visual Quality Concepts plans
• Show how CAC feedback has been incorporated
A i i th ti ti• Answer remaining aesthetics questions
• Address any issues
• Finalize plans in order to move to constructionp
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Aesthetics Design Timeline
• Summer 2009 – Aesthetics Team develops three aesthetics themes for corridor
O t b 2009 Th th t d t CAC• October 2009 – Three themes presented to CAC
• Fall 2009 – CAC members share themes with their communities
• November 2009 – CAC provides feedback to team• November 2009 CAC provides feedback to team
• Winter 2009-2010 – Team selects one theme and revises aesthetics based on CAC comment
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Aesthetics Design Timeline (Contd.)
• January 2010 – Revised aesthetics presented at public open house
J 2010 R i d h i d CAC• January 2010 – Revised aesthetics presented to CAC
• February 2010 – Revised plant palette presented to CAC
S i 2010 A h i fi li h i • Spring 2010 – Aesthetics team finalizes aesthetics based on CAC and public feedback
• June 2010 – Final aesthetics presented to CACJune 2010 Final aesthetics presented to CAC
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Hardscape Themes Considered
h d dThemes ConsideredTheme 1 – An aesthetic that, to a large extent, matches the existing
bridges and walls in the corridor
Theme 2 – Uses surrounding buildings’ aesthetics, primarily art deco, as inspiration
Theme 3 Inspired by recent trends in highway architectureTheme 3 – Inspired by recent trends in highway architecture
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Bridges Overview—CAC Feedback
• Minimalist approach• Sleek design harmonious from one • Sleek design, harmonious from one
bridge to the next• Incorporate current style of Mulholland
B idBridge
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Bridges—Sunset Bl.
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d k b ll Bridges—Skirball Center Dr.North ViewNorth View
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d k b ll Bridges—Skirball Center Dr.
S h ViSouth View
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Bridges—Mulholland Dr.
South View
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Undercrossings Overview—CAC FeedbackUndercrossings Overview CAC Feedback
Existing Structure Northbound• Undercrossings in the same area should have consistent look
• Simple, modern, unadorned design
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Undercrossings—Olympic Bl.Undercrossings Olympic Bl.
NorthboundNorthbound
Proposed Improvements
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Undercrossings—Olympic Bl.Undercrossings Olympic Bl.
Proposed Improvements
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Undercrossings—Church Ln.Undercrossings Church Ln.
P d IProposed Improvements
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Sound Walls Overview—CAC Feedback
P f Th 2 i h fl d il i b i f h • Prefer Theme 2 with fluted pilasters in urban portion of the project
• Pilasters radiate out from Wilshire
• Starting at Sunset and moving north, do not use pilasters
• At north end and south end of project, match to existing walls
Visual simulation—sound Visual simulation sound wall with pilaster
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Walls—Sound Walls
Sound wall at north end of projectSound wall at south end of project
p j
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Walls—MSE Retaining
CAC feedback:CAC feedback:• Blend sound wall Theme 2 with
Retaining Wall (MSE) Theme 3• Maintain consistency with
surroundings
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MSE retaining wall with sound wall and pilasters
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Walls—Cast-in-Place
CAC feedback:• Prefer Theme 2
Th 2 ll h • Theme 2 allows each square to be painted for less garish graffiti removal
Cast-in-place
g g
pretaining wall with gridded fractured fin texture
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Walls—Soil Nail
CAC feedback:CAC feedback:• Prefer rock-like walls that will blend into the
natural landscape
• Prefer design similar to Getty’s walls
Mimic Rock Finish
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Walls Cast in Place (City) Soil Nail (Urban)Walls—Cast-in-Place (City), Soil Nail (Urban)
Cast-in-Place (City):Cast in Place (City):Smooth concrete texture with roughened lower band
Soil Nail (Urban):Soil Nail (Urban):Steel trowel finish with roughened lower band
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Landscape Overview
Development of Landscape Plan:
• CAC feedback
Aesthetic req irements ie enhancement screening etc• Aesthetic requirements – view enhancement, screening, etc.
• Functional requirements – detention basins, bioswales
• Location – West LA, San Fernando Valley, Sepulveda Pass
• Maintenance requirements
• Water requirements
• Mitigation requirementsg q
• Site-appropriate foliage
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One-Month Construction Look Ahead
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Wilshire SegmentWilshire Segment
Wilshire Loops, W of 405p ,• Driving piles for SB 405 to EB Wilshire off-ramp
• Sidewalk closed on EB/WB Wilshire for two days each, not at the same timetime
• Create access and clear & grub for NB 405 to EB Wilshire off-ramp
• One lane closure on SB Sepulveda from Wilshire to Ohio
Santa Monica UC • Create access and clear and grub
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Wilshire SegmentWilshire Segment
Constitution UCConstitution UC• Utility Relocation
• Temporary lane closure on Constitution and Sepulveda
Walls• 1685: W of I-405, north of Constitution
1686/1672 t f I 405 th f Wil hi d C tit ti• 1686/1672: east of I-405, north of Wilshire and Constitution
• One lane closure on SB Sepulveda Bl. from Montana Av. to Wilshire Bl.
• Bike/pedestrian path closed from Brentwood Glen Av. to Constitution Av./p p
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Mulholland SegmentMulholland Segment
Getty Trail Head • Crusher site operation during the daytime and nighttime hours• Retaining wall construction along the NB I-405Retaining wall construction along the NB I 405
Sherman Oaks Wall construction• Clearing/grubbing and grading of work zone area along NB and SB I-
405
Valley Vista• Demolition of three houses in mid July • Demolition of three houses in mid July • Conduct clearing and grubbing operations in mid July during daytime• Will begin construction of sound wall in August
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Mulholland SegmentMulholland Segment
Skirball Bridge Demolition and Reconstruction Activityg y• Conduct bridge preparation work and set up construction yards in
late June
• Set-up K-rail in early July at the center of the bridge to separate traffic • Set up K rail in early July at the center of the bridge to separate traffic from the work zone
• Reconfigure traffic to maintain one lane of traffic in each direction during construction in early Julyduring construction in early July
• Demolition of north side of Bridge (7 nights) - Over SB I-405 – 2 nights
O er NB I 405 2 nights - Over NB I-405 – 2 nights - Over NB off-ramp – 1 night
• Reconstruction of north side of Bridge ( 7 months)
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Sunset Segment Sunset Segment
Sepulveda Bl. Improvements (Montana to Ovada)p p ( )• Utility relocation (NB closure of Sepulveda Bl. during non-peak hours)
• Bronwood Av. vault work (24/7 closure for 3 weeks)
M t A ff l• Montana Av. off-ramp closure
1720/1730 Retaining Wall Construction• Vegetation removal• Vegetation removal
• Temporary fence and sound blanket installation
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Sunset Bridge Replacement – Current WorkSunset Bridge Replacement Current Work
R h d i l (l d i )• Remove hazardous material (lead paint)
• Clear and grub
• Create access roads around bridge• Create access roads around bridge
• Support bridge and abutments
• Remove conduits, hand rail, guard rail, light polese ove co du ts, a d a , gua d a , g t po es
• Remove wood inside bridge
• Support (in place) 34-inch active water line system
• Re-stripe freeway for K-rail placement
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Sunset Bridge Future Work ScheduleSunset Bridge Future Work Schedule
R l f b id ( i i ht )• Removal of bridge (six nights)– Over NB I-405 - two nights
– Over SB I-405 - two nights
– Over Sepulveda Bl - two nights
• Removal of columns/abutments (three nights)
• Reconstruction of bridge (10 months)
• Remove and reconstruct northern side of bridge Winter 2011Winter 2011
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For More Information
Project Hotline: (213) 922-3665
t t/405www.metro.net/405
www.facebook.com/405project
Twitter: http://twitter com/I 405Twitter: http://twitter.com/I_405
Nixle: nixle.com
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