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I-405 Sepulveda Pass Improvements Project

  • Overview
  • Construction Notices
  • Daily Closures
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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

10/04/2014

Segment: Skirball
Area: Skirball Bridge

The Skirball Bridge will be fully closed from 11pm, Saturday, October 4, to 7am, Sunday, October 5 and 10pm, Sunday, October 5, to 6am, Monday, October 6.

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10/02/2014

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

From 10pm, Thursday, October 2, to 6am, Friday, October 3, Sepulveda Bl will be fully closed between Mountaingate Dr and Skirball Center Dr.

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09/26/2014

Area: Sepulveda Bl from Mountaingate Dr to Skirball Center Dr

Beginning the night of Friday, September 26, nightly to the morning of Wednesday, October 1, Sepulveda Bl between Mountaingate Dr and Skirball Center Dr will be fully closed in both directions or fully closed with one northbound lane open. The hours of the operation are as follows:

  • Night of Friday, September 26, 10pm to 8am
  • Night of Saturday, September 27 through night of Tuesday, September 30, 10pm to 6am
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09/22/2014

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

Beginning the night of Monday, September 22, nightly from 10pm to 6am, to the morning of Sunday, September 28, 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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09/15/2014

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
Click here for Freeway Closures

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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.

Click here for Freeway Closures

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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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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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