Overview - Construction

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Construction Updates

OCTA, in cooperation with Caltrans, is widening I-5 between SR-73 and El Toro Road. The project will improve 6.5 miles of I-5 through Mission Viejo, Laguna Niguel, Laguna Hills, and Lake Forest.

Project Details

Today, nearly 360,000 motorists travel I-5 daily between the San Joaquin Hills Toll Road (SR-73) and El Toro Road. Transportation planners expect traffic volumes to grow 25 percent by 2045. To address this travel demand, OCTA and Caltrans are working together to implement the San Diego Freeway (I-5) Widening project from SR-73 to El Toro Road.

roadway
  • New northbound and southbound general purpose lane from Avery Parkway to Alicia Parkway to increase capacity
  • Extension of the second carpool lane from Alicia Parkway to El Toro Road, in both directions
structure
  • Reconstruct Avery Parkway and La Paz Road interchanges, reconstruct Los Alisos Boulevard bridge, and widen several freeway bridges
  • Modify all on- and off-ramps in project area
  • Add new sound and retaining walls
operational
  • Restripe carpool lanes for continuous access, making it easier for motorists to enter and exit the lanes at any time
  • Add new and reestablish existing auxiliary lanes between interchanges to improve merging
  • Install new overhead signs and lighting
  • Restripe regular lanes within project limits
details
Length

6.5 miles

Corridor Cities

Mission Viejo, Laguna Niguel, Laguna Hills, Lake Forest

Total estimated cost

$580 million

Schedule

Mid-2019 to Early 2025

Segment Overview

This freeway improvement project is being built in three segments and includes several roadway, structural and operational improvements such as new general purpose lanes, improved interchanges and widened ramps.

segment 1
SR-73 to Oso Parkway
January 2020 to Late 2024
segment 2
Oso Parkway to Alicia Parkway
April 2019 to Mid-2024
segment 3
Alicia Parkway to El Toro Road
January 2021 to Late 2024

Avery Parkway

roadway
  • Improve on- and off-ramps, and widen Avery Parkway
  • Add northbound and southbound general purpose lane
structure
  • Reconstruct and increase capacity at Avery Parkway interchange
  • Add retaining walls
operational
  • Convert carpool lanes to continuous access
  • Add auxiliary lanes and reestablish existing ones

Crown Valley Parkway

roadway
  • Modify five on- and off-ramps at Crown Valley
  • Add northbound and southbound general purpose lane
structure
  • Increase capacity
  • Add retaining walls
operational
  • Convert carpool lanes to continuous access
  • Add auxiliary lanes and reestablish existing ones

Oso Parkway

roadway
  • Add northbound and southbound general purpose lane
structure
  • Modify six on- and off-ramps at Oso Parkway
  • Add sound and retaining walls
operational
  • Convert carpool lanes to continuous access
  • Add auxiliary lanes and reestablish existing ones

La Paz Road

roadway
  • Add northbound and southbound general purpose lane
structure
  • Reconstruct La Paz Road Interchange
  • Add sound and retaining walls
operational
  • Convert carpool lanes to continuous access
  • Add auxiliary lanes and reestablish existing ones

Alicia Parkway

roadway
  • Extend second carpool lane from Alicia Parkway to El Toro Road
structure
  • Add retaining walls
  • Modify on- and off-ramps at Alicia Parkway
operational
  • Convert carpool lanes to continuous access
  • Add auxiliary lanes and reestablish existing ones

El Toro Road

roadway
  • Extend second carpool lane between Alica Parkway and El Toro Road
structure
  • Reconstruct Los Alisos Boulevard bridge
  • Add retaining walls
operational
  • Convert carpool lanes to continuous access
  • Add auxiliary lanes and reestablish existing ones

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Contact the I-5 South County Improvements Project Outreach Team

phone

If you have questions, please contact the Outreach Team by calling 949-614-0202 or email i5SouthCounty@octa.net

Para obtener más información sobre el proyecto, llame al 949-614-0202 o envíe un correo electrónico a i5SouthCounty@octa.net

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