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I-405 Sepulveda Pass Improvements Project

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Skirball On-Ramps and Bridge Reconstruction
Status: Completion of the Skirball Bridge expected September 2014.
Wilshire Bl Ramps Reconstruction
Status: Extended closures for the Wilshire ramps are now over.
Sunset Bridge Ramp Reconstruction
Status: Widening of Church Ln Bridge expected to last until Mid-May 2014
Mulholland Dr Bridge Demolition & Reconstruction
Status: Mulholland Bridge completed December 2013.

With the opening of the full 10 miles of the new northbound high-occupancy vehicle (HOV) lane between the I-10 and US 101 on May 23, the Los Angeles County Metropolitan Transportation Authority (Metro), the California Department of Transportation (Caltrans) and contractor Kiewit Infrastructure West have added badly needed capacity to the nation’s busiest freeway and closed the last remaining gap in the entire I-405 carpool lane network.

Some work remains. For example, the Skirball Center Dr southbound on- and off-ramps and the final configuration of the northbound and southbound ramps to and from Sunset Bl will be completed this summer.

Wilshire Segment

Significant elements of the Wilshire Segment are, however, complete, with all the connecting ramps joining I-405 and Wilshire Bl fully open. Bridges and walls within the Wilshire Segment are also complete.

Southbound motorists traveling the I-405 will benefit from the restriping of the freeway under the I-10. Instead of three lanes, motorists can now drive on four lanes.

Bridge Status

Bridge Status

Sunset Segment

In the Sunset Segment, Reconstruction of the Church Ln intersection is anticipated for June 2014. Full restoration of the Moraga Dr ramps is complete. Restoration of Sepulveda Bl at Moraga Dr included double left-turn lanes onto the northbound Moraga Dr on-ramp from northbound Sepulveda Bl.

Sepulveda Bridge (Bridge 19) near the Getty Center Dr ramps is complete! Minor clean-up work to the southbound median approach slabs nears an end.

Bridge Construction Status

Bridge Construction Status

Mulholland Segment

Final striping of the Southbound Valley Vista Off-Ramp is 90 percent complete. Sepulveda Bridge (adjoining the Valley Vista ramps) is complete, with roadway work continuing under the bridge.

We anticipate the Skirball Center Dr Bridge to be finished in Summer 2014. Remaining work includes installing the permanent fence and completing the wildlife crossing.

The majority of the retaining walls in the Mulholland Segment are complete. The remaining major wall under construction, Wall 1921, runs along the west edge of Sepulveda Bl between Skirball Center Dr and Mountaingate Dr. Wall 1921 must be complete before the final configuration of Sepulveda Bl in this area can be opened.

For the southbound Skirball Center Dr off-ramp, work stands at 85 percent complete. Work is 95 percent complete for the southbound on-ramp. The northbound Skirball Center Dr off-ramp and on-ramp have been opened to full capacity.

Project Overview

The I-405 Sepulveda Pass Improvements Project will add a 10-mile HOV lane and improve supporting infrastructure such as ramps, bridges and sound walls on the San Diego Fwy. (I-405), while widening lanes from the Santa Monica Fwy. (I-10) to the Ventura Fwy. (US 101).

This project will reduce existing and forecasted traffic congestion on the I-405 and enhance traffic operations by adding freeway capacity in an area that experiences heavy congestion. In addition to these modifications, the project will improve both existing and future mobility and enhance safety throughout the corridor.

Project benefits include a decrease in commuter time, reduction in air pollution, and promotion of ridesharing.

The I-405 Sepulveda Pass Improvements Project will:

  • Add a 10-mile HOV lane on the northbound I-405 between the I-10 and US-101 Fwys.
  • Remove and replace the Skirball Center Dr., Sunset Bl. and Mulholland Dr. bridges
  • Realign 27 on- and off-ramps
  • Widen 13 existing underpasses and structures
  • Construct approximately 18 miles of retaining walls and sound walls

Construction Notice Archives | Lane Closures | Detour Maps

Construction Notices

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Start Date Notice Brief More Info

09/15/2014

Segment: Mulholland
Area: Sepulveda Bl from Mountaingate Dr to Skirball Center Dr

Beginning the night of Monday, September 15, nightly from 10pm to 6am, to the morning of Monday, September 22, Sepulveda Bl between Mountaingate Dr and Skirball Center Dr will be fully closed with one northbound lane open. Periodically, Sepulveda Bl will be fully closed in both directions.

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09/05/2014

Segment: Mulholland
Area: Sepulveda Bl from Mountaingate Dr to Skirball Center Dr

Sepulveda Bl will be fully closed between Mountaingate Dr and Skirball Center Dr nightly, 10pm to 6am, beginning the night of Monday, September 8, to the morning of Monday, September 15. This operation will require the closure of the southbound Skirball Center Dr on-and off-ramps. Please see notice for details.

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09/02/2014

Segment: Mulholland
Area: Sepulveda Bl from Mountaingate Dr to Skirball Center Dr

Sepulveda Bl will be fully closed between Mountaingate Dr and Skirball Center Dr nightly, 10pm to 6am, beginning the night of Tuesday, September 2, to the morning of Monday, September 8. This operation will require the closure of the southbound Skirball Center Dr on-and off-ramps. Please see notice for details.

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08/22/2014

Segment: Mulholland
Area: Sepulveda Bl fully closed from Mountaingate Dr to Skirball Center Dr

Sepulveda Bl will be fully closed between Mountaingate Dr and Skirball Center Dr nightly, 10pm to 6am, beginning the night of Friday, August 22, to the morning of Saturday, August 30. This operation will require the closure of the southbound Skirball Center Dr on-and off-ramps.

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08/04/2014

Segment: Mulholland
Area: Sepulveda Bl Undercrossing (near Valley Vista ramps)

Beginning 10pm, Monday, August 4 and continuing nightly from 10pm to 5am, until 5am, Friday, August 29, the contractor will paint the steel girders on the Sepulveda Bl undercrossing in Sherman Oaks. This work will require the following closures:

  • Intermittent nightly full directional closure of Sepulveda Bl from the southbound Valley Vista on-ramp to Sherman Oaks Av (check “Daily Closures” for closure information)
  • Intermittent nightly (10pm to 5am) closure of southbound Valley Vista on-ramp
  • Intermittent nightly partial closure of Fiume Walk
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07/30/2014

Segment: Mulholland
Area: Retaining Wall 2011, Sherman Oaks

Beginning Wednesday, July 30 to Monday, September 15, from 7am to 3pm daily and intermittently during nighttime hours from 6pm to 10am, the contractor will be drilling soil nails into the slope behind retaining wall 2011 and installing mesh. Some of this work will be conducted from Woodcrest Dr. This operation will require intermittent closures of:

  • southbound Valley Vista on-ramp
  • I-405 southbound 4 lane
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06/27/2014

Segment: Mulholland
Area: Skirball Park & Ride

Beginning at 10pm, Friday, June 27, to 3pm, Thursday, July 3, the Skirball Park & Ride will be fully closed to demolish, grade, and pour the southern driveway at the Skirball Park & Ride. Parking will not be available; VIOLATORS WILL BE TOWED. The Skirball Bridge will be reduced with flaggers during this time to conduct curb and gutter work.

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06/18/2014

Segment: Mulholland
Area: Mulholland Bridge

The Mulholland Bridge will be fully closed to switch traffic and restripe the intersection of Skirball Center Dr and Mulholland Dr from 10pm, Wednesday, June 18, to 6am, Thursday, June 19. The operation will require the closure of:

  • Northbound Skirball Center Dr lanes from the northbound Skirball Center Dr on-ramp to Mulholland Dr. Traffic will be maintained in both directions.
  • Northbound Skirball Center Dr off-ramp
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05/07/2014

Segment: Sunset
Area: Northbound I-405 from Moraga Dr to Greenleaf St

The northbound I-405 will be fully closed from Moraga Dr to Greenleaf St for five consecutive nights.

Schedule:
• Night of Wednesday, May 7, midnight to 5am, Thursday, May 8
• Night of Thursday, May 8, midnight to 5am, Friday, May 9
• Night of Friday, May 9, 1am to 6am, Saturday, May 10
• Night of Saturday, May 10, 2am to 7am, Sunday, May 11
• Night of Sunday, May 11, midnight to 5am, Monday, May 12
• Ramps begin closing as early as 7pm on the nights of each operation and lanes begin closing at 10pm on the night of each operation.

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04/22/2014

Segment: Mulholland
Area: Northbound I-405 Closure, Getty Ctr Dr to Greenleaf

The northbound I-405 will be fully closed from Getty Center Dr to Greenleaf St on the night of Tuesday, April 22 from midnight to 5am on Wednesday, April 23rd. The closure will accommodate the removal and installation of overhead signs.

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04/18/2014

Segment: Mulholland
Area: Between Mountaingate Dr and Skirball Center Dr

As part of the Sepulveda Bl roadway reconstruction of the northbound 2 lane, Sepulveda Bl will be fully closed between Mountaingate Dr and Skirball Center Dr from 10pm, Friday, April 18 to 10am, Saturday, April 19. The southbound Skirball on-and off-ramps will be closed during this operation. See notice for detour information and a list of open ramps.

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04/16/2014

Segment: Wilshire
Area: Northbound I-405, from Santa Monica Bl to Wilshire Bl

The northbound (NB) I-405 will be fully closed from the Santa Monica Bl to Wilshire Bl for three nights as follows:

  • From midnight to 5am, starting at midnight on Wednesday, April 16th and continuing for two nights—from midnight to 5am—until 5am on Friday, April 18th.
  • On the night of Friday, April 18th, from 1am to 6am on Saturday, April 19th.

Ramp Closures
NB I-405 on-ramp from Olympic Bl/Pico Bl (on Cotner Av)
NB I-405 on-ramp from Santa Monica Bl.

Lanes will begin to close at 10pm, and ramps will be closed as early as 7pm.

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04/11/2014

Segment: Mulholland
Area: Sepulveda Bl from Mountaingate Dr to Skirball Center Dr

As part of the Sepulveda Bl roadway construction on the northbound 2 lane, Sepulveda Bl will be fully closed between Mountaingate Dr and Skirball Center Dr from 10pm, Friday, April 11 to 6am, Monday, April 14. The southbound Skirball on-and off-ramps will be closed during this operation. See notice for detour information and a list of open ramps.

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04/11/2014

Segment: Wilshire
Area: I-405 from Santa Monica Bl. to Wilshire Bl.

The northbound I-405 will be fully closed from Santa Monica Bl to Wilshire Bl on the night of Friday, April 11, from 1 to 6am on Saturday, April 12.

  • Lanes will begin to close at 10pm, and ramps will be closed as early as 7pm. These ramps will close
    • Northbound I-405 Olympic Bl/Pico Bl on-ramp
    • Northbound I-405 Santa Monica Bl on-ramp
    • Northbound I-405 will be accessible at the northbound on-ramp from eastbound Wilshire Bl

Detour: Exit the northbound I-405 at the Santa Monica Bl off-ramp, turn right to eastbound Santa Monica Bl, turn left to northbound Sepulveda Bl, turn right to eastbound Wilshire Bl, and turn right onto the northbound I-405 on-ramp from eastbound Wilshire Bl.

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04/01/2014

Segment: Mulholland
Area: Skirball Bridge

From 9pm, Tuesday, April 1, to 6am, Wednesday, April 2, the Skirball Bridge will be closed to facilitate traffic signal and street lighting conduit across the Skirball Bridge.

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03/31/2014

Segment: Mulholland
Area: Sepulveda Bl between Mountaingate Dr and Skirball Center Dr

As part of the Sepulveda Bl roadway construction on the northbound 2 lane, Sepulveda Bl will be fully closed between Mountaingate Dr and Skirball Center Dr from 10pm, Monday, March 31 to 5am, Tuesday, April 1, 2014. Southbound Skirball on-and off-ramps will be closed during this operation and all other full closures of Sepulveda Bl from Mountaingate Dr to Skirball Center Dr.

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03/28/2014

Segment: Mulholland
Area: Southbound Valley Vista On-ramp, southbound Skirball on- and off-ramps, and Sepulveda Bl between Mountaingate and Skirball Center Dr

Beginning 7pm, Friday, March 28 through 6am, Monday, March 31, 2014, the southbound Valley Vista on-ramp will be closed to grind asphalt, pave the new road surface, and restripe the on-ramp. Consecutively, the southbound Skirball on- and off-ramps will be closed beginning 9pm Friday, March 28 to 6am, Monday, March 31, to facilitate work on the Sepulveda Bl paving operation between Mountaingate Dr and Skirball Center Dr. Beginning 9pm, Friday, March 28, to 6am, Monday, March 31, Sepulveda Bl will be reduced to one lane in each direction between Mountaingate Dr and Skirball Center Dr.

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03/26/2014

Segment: Mulholland
Area: Southbound I-405 from US 101 to the southbound Getty Center Dr off-ramp

The southbound I-405 will be fully closed from US 101 to the southbound Getty Center Dr off-ramp from midnight, Wednesday, March 26 through 5am, Thursday, March 27, and midnight, Thursday, March 27, to 5am, Friday, March 28, 2014. The closure will accommodate installing joint seals on the Sepulveda Bl undercrossing near Sherman Oaks. This operation will only happen if weather permits. Please see the Construction Notice for ramp closures.

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03/26/2014

Segment: Mulholland
Area: Southbound Valley Vista on-ramp and southbound Skirball on-ramp

Beginning Wednesday, March 26 to Sunday, April 6, 2014, the southbound Valley Vista on-ramp will be closed during non-peak hours of 9am to 3pm, except on Thursday, March 27 and Thursday, April 3. This closure is to complete the barrier on the east side of the on-ramp. Consecutively, the southbound Skirball on-ramp will also be closed during non-peak hours of 9am and 3pm, beginning Wednesday, March 26 to Sunday, April 6, except on Thursday, March 27 and Thursday, April 3. This closure facilitates work on several walls on Sepulveda Bl.

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03/24/2014

Segment: Mulholland
Area: Sepulveda Bl fully closed between Mountaingate Dr and Skirball Center Dr

As part of the Sepulveda Bl roadway construction on the northbound 2 lane, Sepulveda Bl will be fully closed between Mountaingate Dr and Skirball Center Dr from 10pm, Monday, March 24 to 5am, Tuesday, March 25, 2014. The southbound Skirball on-and off-ramps will be closed during this operation as well as all other full closures of Sepulveda Bl from Mountaingate Dr to Skirball Center Dr.

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03/21/2014

Segment: Mulholland
Area: Sepulveda Bl between Mountaingate Dr and Skirball Center Dr

Beginning 9pm, Friday, March 21 to Monday, April 21, Sepulveda Bl will be reduced to one northbound lane between Mountaingate Dr and Skirball Center Dr to conduct roadway construction on the northbound 2 lane. The contractor is planning to open the northbound 2 lane (600 feet south of the Skirball Bridge) and a right turn pocket onto the Skirball Bridge on Monday, April 7. Additional closures will occur as follows (see notice for details).

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03/17/2014

Segment: Wilshire
Area: Southbound I-405, Santa Monica Bl to National Bl

The I-405 Sepulveda Pass Improvements Project contractor plans to fully close the southbound I-405 between Santa Monica Bl and National Bl in West Los Angeles to enable the installation of a full-span freeway overhead sign and to conduct other roadway construction activities at the freeway median.

The southbound I-405 will be closed from Santa Monica Bl to National Bl nightly:
•From 12am to 5am on the nights of:
-Monday, March 17, to Thursday, February 20
-Sunday, March 23
•From 12am to 6am on the nights of:
-Friday, March 21
-Saturday, March 22

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03/11/2014

Segment: Mulholland
Area: Sutton St cul-de-sac

Beginning Tuesday, March 11 through Tuesday, April 8, 2014, 7am to 5pm, the contractor will conduct curb, gutter, and sidewalk street improvements on Sutton St cul-de-sac. Local access will be maintained.

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03/05/2014

Segment: Mulholland
Area: Skirball Center Dr, northbound Skirball on- and off-ramps, and Skirball Park & Ride

Beginning 9pm on Wednesday, March 5 to 6am, Monday, March 24, full depth reconstruction, grind and overlay, curb and gutter work, and paving will occur on the southbound lane of Skirball Center Dr and the northbound Skirball on- and off-ramps.

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03/05/2014

Segment: Mulholland
Area: Skirball Center Dr, northbound Skirball on- and off-ramps, and Skirball Park & Ride

Beginning 9pm on Wednesday, March 5 to 6am, Monday, March 24, full depth reconstruction, grind and overlay, curb and gutter work, and paving will occur on the southbound lane of Skirball Center Dr and the northbound Skirball on- and off-ramps. The work schedule is:

Weekdays from March 5 to March 17:
• Skirball Center Dr from Mulholland Dr to Skirball Park & Ride:
• Daytime: The current lane capacity of one lane in each direction will be maintained with cones.
• Nighttime hours of 9pm to 6am: Skirball Center Dr will be reduced to one lane with flaggers maintaining access in each direction.

• Northbound Skirball on and off-ramps and turn pockets will be closed:
• Weekdays: 9am to 3pm
• Weeknights: 9pm to 6am

During the weekends of March 7 to 10; March 14 to 17; and March 21 to 24; from 9pm, Friday nights to 6am, Monday mornings:
• Full closure of the northbound Skirball Center Dr on- and off-ramps
• Closure of the Skirball Park & Ride
• Skirball Center Dr, from Mulholland Dr to Skirball Park & Ride, will be reduced to one lane with flaggers maintaining access in each direction.

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03/03/2014

Segment: Skirball
Area: Skirball Center Dr, northbound Skirball ramps, and Skirball Park & Ride

Weekdays from March 3 to March 17:

  • Skirball Center Dr from Mulholland Dr to Skirball Park & Ride:
    • Daytime: The current lane capacity of one lane in each direction will be maintained in a cone configuration.
    • Nighttime hours of 9pm to 6am: Skirball Center Dr will be reduced to one lane with flaggers maintaining access in each direction.
  • Northbound Skirball on and off-ramps and turn pockets will be closed:
    • Weekdays: 9am to 3pm
    • Weekdays: 9pm to 6am

During the weekends of March 7 to 10; March 14 to 17; and March 21 to 24; from 9pm, Friday nights to 6am, Monday mornings:

  • Full closure of the northbound Skirball on and off-ramps
  • Closure of the Skirball Park & Ride
  • Skirball Center Dr, from Mulholland Dr to Skirball Park & Ride, will be reduced to one lane with flaggers maintaining access in each direction.
Click here for Freeway Closures

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02/28/2014

Segment: Sunset
Area: Montana Av to Church Ln

There will be full-depth roadway reconstruction on Sepulveda Bl, from Montana Av to Church Ln/Ovada Pl, from Friday, March 14 at 10pm, to Monday, April 28 at 6am. Please see Construction Notice for full details.

• Full weekend closures: from 10pm on Friday to 6am on Monday, March 14 to April 28.
• Reduced to one lane in each direction from 6am to 10pm, Monday to Friday, March 14 to April 28.
• Full nighttime closure: 10pm to 6am on weekday nights, March 17 to April 28.
• Full weekend closures: 10pm on Friday to 6am on Monday.

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If Daily Closures are not displaying below, please visit the project Facebook or Twitter pages for the latest closures.

 

The I-405 Sepulveda Pass Improvements Project utilizes Twitter to post closure updates every workday afternoon. For your convenience, the updates are organized by segment. You can also view these Daily Updates on our Facebook, Twitter.

Closure Widget: Learn how to embed the Daily Closures onto your website

More Info: Typical Freeway Closures | Service Delays | Detour Maps

The abbreviations below help us organize the Daily Updates by segment.
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
SU
MO
TU
WE
TH
FR
SA
All
Wilshire
Sunset
Mulholland
ALL
WIL
SUN
MUL

All Segments



Wilshire Segment (National Bl to Waterford St)



Sunset Segment (Waterford St to Getty/Sepulveda Bl)



Mulholland Segment (Sepulveda Bl to US 101 Highway)



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