I-405 Sepulveda Pass Improvements Project

Transcription

1 I-405 Sepulveda Pass Improvements Project Community Meeting November 15,

2 Wilshire Segment Overview of Wilshire Segment There are a total of 23 bridges being constructed on this project; almost half are in the Wilshire segment Of these 12 bridges: Seven are bridge undercrossing locations: Exposition, Pico, Olympic, Santa Monica, Ohio, Wilshire, Constitution Five are ramp locations SB I-405 to EB Wilshire off NB I-405 to EB Wilshire off EB Wilshire to NB I-405 on WB Wilshire to NB I-405 on NB I-405 to WB Wilshire off 2

3 Wilshire Segment Construction of false work for new southbound flyover ramp 3

4 Wilshire Segment Construction of false work for new southbound flyover ramp Southbound I-405 to eastbound Wilshire. Scheduled to begin November 27 and continue for approximately two weeks. Requires a full nightly closure of Wilshire Bl from Federal Av to Sepulveda Bl during false work construction over Wilshire Bl Notice of the closure and established detour route will be posted on our project website and sent out via in advance 4

5 Wilshire Segment New eastbound Wilshire to northbound I-405 flyover ramps Looking north 5

6 Wilshire Segment Eastbound Wilshire On-Ramp to Northbound I-405 Erection of this superstructure, extending from the GSA parking lot, over Sepulveda Blvd and hovering above the northbound I-405 off-ramp to westbound Wilshire. When falsework for the bridge deck is extended over Wilshire Blvd, a full closure of Wilshire will be required from Federal Ave to Sepulveda Bl These nightly closures are projected to begin November 19 and to continue for a few days. Advance notice will be posted on our website and sent out via once the dates are confirmed. 6

7 Wilshire Segment Northbound I-405 off-ramp to Eastbound Wilshire Falsework for this bridge is visible, extending from the west-side of Sepulveda Bl at Salvation Army, going over Sepulveda Bl, over GSA parking lot to Wilshire Bl. When the deck for this bridge is poured over Sepulveda Bl, a full closure of Sepulveda Bl will be required from Ohio Av to Wilshire Bl. These nightly closures are projected to begin November 26 and to continue for approximately 4 weeks. Advance notice will be posted on our website and sent out via once the dates are confirmed. 7

8 Wilshire Segment New Eastbound Wilshire Ramps for Northbound I-405 Looking east Looking north 8

9 Wilshire Segment Northwest Connector at I-10/Exposition Bl Recent full night closures on Exposition Bl and Pico Bl have been to construct false work for this bridge. When the deck for this bridge is poured over Exposition Bl, a full closure of Exposition will be required from Sawtelle Bl to Sepulveda Bl. These nightly closures are projected to begin within the next two weeks. Advance notice will be posted on our website and sent out via once the dates are confirmed. 9

10 Wilshire Segment Upcoming Extended Closures and Dates Ramp Tentative Date Maximum Duration (Days) WB Wilshire on-ramp to NB I-405 June NB I-405 off-ramp to WB Wilshire June SB I-405 off-ramp to WB Wilshire December WB Wilshire on-ramp to SB I-405 TBD 14 EB Wilshire on-ramp to SB I-405 Not Needed 14 SB I-405 to EB Wilshire TBD 90 NB I-405 off-ramp to EB Wilshire TBD 21 EB Wilshire on-ramp to NB I-405 TBD 90 SB I-405 off-ramp to Santa Monica TBD 14 NB I-405 on-ramp from Santa Monica TBD 7 SB I-405 on-ramp from Santa Monica TBD 7 10

11 Sunset Segment Reconstructed Sunset Bl Bridge reopened September 24, 2012 A second dedicated right turn lane onto the NB onramp will open early

12 Sunset Segment Sepulveda Bl Repaving Operations Between Montana Av and Church Ln/Ovada Pl New roadway on eastside of street is being repaved now Need to raise street elevation to new, higher elevation Pouring protective concrete around pipe on Sepulveda Bl 12

13 Sunset Segment Sepulveda Bl Repaving Operations (contd.) Requires a 1 lane northbound and 1 lane southbound configuration Lane reduction in place during 6am to 9pm Full closure of Sepulveda from 9pm to 6am for the week Starts November 26, 2012 thru December 3, 2012 Sepulveda Bl repaved near 1720 Wall. 13

14 Sunset Segment Church Ln Protection of 12x12 Storm Drain Box On westside of Sepulveda Bl Work will occur in phases Montana Av to Bronwood Av Sepulveda Way to Church Ln/Ovada Pl Storm Drain Line Montana Av 14

15 Sunset Segment (Contd.) Work is anticipated to start after the Sepulveda Bl roadwork is completed, early December

16 Sunset Segment (Contd.) Protection of 12x12 Storm Drain Box Requires the installation of approximately 138 piles Pile installation is anticipated to take 6 to 8 months Some piles will go as deep as 130 feet 16

17 Sunset Segment (Contd.) Protection of 12x12 Storm Drain Box Daytime (7am - 7pm) operations include: Pile driving Pile drilling Excavation Nighttime (7pm - 6am) operations include: Pile drilling Excavation Delivery of supplies Hauling out of material 17

18 Sunset Segment Freeway Storm Drain NB I-405 Between Getty Center and Getty Ramps Getty Ramps On median of freeway Requires NB freeway lanes be shifted east to create work zone NB Getty on-ramp will be closed to create work zone Anticipated to occur mid-december 2012 Freeway paving will follow Storm Drain Work Zone Getty Center 18

19 Sunset Segment (Contd.) NB I-405 Roadway Paving Between Moraga Dr and Getty Center ramps Date to be determined Will occur over a weekend Operation is weather permitting 55-hour lane reduction from 5 lanes to 2 lanes MSE walls curve south towards Moraga Dr 19

20 Sunset Segment NB I-405 Roadway Paving Sepulveda Bl alternative route starting at Wilshire Bl Traffic Control Officers at main intersections along closure Changeable message signs will be utilized to announce closure Montana Av off-ramp will be closed New northbound on-ramp from Sunset Bl, looking northwest 20

21 Mulholland Bridge Reconstruction Bridge Demolition Closure ended seven hours earlier than planned Significant traffic reduction throughout weekend, 45 55% reduction on I-405 near closure Various work activities completed throughout the weekend closure 21

22 Mulholland Bridge Reconstruction Work Activities performed during weekend closure Roadway paving Pothole repair Sign structure repairs Barrier rail replacement Wilshire ramp false work Roadway striping Drainage work 22

23 Mulholland Bridge Reconstruction Reconstruction of the south half of bridge Ongoing nightly closures of Mulholland Dr due to drainage work Bridge abutment construction ongoing Bridge column footing construction ongoing 23

24 Sherman Oaks Work Activities Retaining wall construction and freeway widening on-going (east side of I-405) Freeway widening and sound wall reconstruction(valley Vista area) anticipated to be begin in early December Sepulveda overpass/bridge widening on-going Sound wall construction and freeway widening (west side of I-405) ongoing 24

25 Sound/Retaining Wall Construction in Sherman Oaks 259

26 Sherman Oaks Bridge Widening Traffic Reconfiguration Stage B 26

27 Skirball Bridge Reconstruction Reconstruction of the south half of bridge Bridge column construction is complete Bridge abutment construction ongoing Ongoing drainage work anticipated to be complete around the end of the 2012 Future bridge abutment at east side of Skirball Bridge, just south of the bridge 27

28 Relocated Southbound Skirball Ramps New Southbound Skirball on-ramp New Skirball on-ramp anticipated to be in operation in mid-january 2013 (will close existing Skirball on-ramp at the same time) New SB Skirball ramps relocated 2,000 feet south of existing ramps Temporary widening of Sepulveda anticipated to begin in December 2012 On-going utility relocation on Sepulveda Bl New design eliminates the SB acceleration lane on Sepulveda Bl from new SB Skirball ramps 28

29 Relocated Southbound Skirball Ramps No SB acceleration lane 29

30 Relocated Southbound Skirball Ramps Temporary configuration of Sepulveda One temporary left-turn lane onto new SB Skirball on-ramp Installation of traffic signal will control traffic at new SB Skirball on-ramp Work to complete the final configuration of Sepulveda anticipated to begin in Spring

31 Relocated Southbound Skirball Ramps Traffic benefits of new SB Skirball ramps design Improved traffic flow, less travel delays and less congestion in the overall area Improved operations of the Skirball/Sepulveda intersection Improved signal timing on Sepulveda Additional capacity and turning lanes will be added to Sepulveda Bl Increased capacity on new southbound Skirball ramps 31

32 Relocated Southbound Skirball Ramps 32

33 For More Information Project Hotline: (213) Twitter: Nixle: nixle.com 33