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SR-710 North Study

  • Overview
  • Project Status
  • Frequently Asked Questions

Caltrans and Metro are working together on the 710 North Study to evaluate mobility and find traffic congestion solutions between the western San Gabriel Valley and the east/northeast area of Los Angeles. The transportation network in this area was started more than half a century ago but was never completed.

Population growth will make traffic congestion worse and result in more traffic accidents, air pollution and related illnesses, and hurt the Southern California economy if nothing is done.

The Study is funded by Measure R, which was passed by two-thirds of Los Angeles County voters in 2008, mandating transportation upgrades throughout the County. The measure specifically allocates $750 million for the 710 North traffic congestion relief efforts.

What’s the status of the 710 North Study?

Metro and Caltrans will release and circulate the Study’s draft environmental document in February 2015. Caltrans has extended the standard 45-day public review and comment period to 90-days, and will hold two public hearings. The public is encouraged to provide comments during this period, and will have several options to submit comments:

  • In person at the public hearings
  • By U.S. Mail
  • Online through the Caltrans public comment website

Study Timeline:

  • The Study’s Alternative Analysis was completed and the Alternative Analysis Report with five Alternatives was posted online on January 18, 2013.
  • The draft environmental document evaluating the five alternatives will be released in Feb 2015.
  • Public will have 90 days to review and provide fact-based comments
  • A preferred alternative will be identified in the final environmental document in 2016

Learn more about the 710 North Study:


The Alternative Analysis phase of the study was completed and the Alternative Analysis Report was posted online on January 18, 2013. The five alternatives that performed best against the screening criteria and studied in depth in the Draft Environmental Impact Report/ Environmental Impact Statement (Draft EIR/EIS) are:  

Bus Rapid Transit

Express Buses for longer trips at higher speeds that serves the communities between East Los Angeles and Pasadena, with connecting bus service to adjacent communities; greater frequency of bus service; minimal stops; and potential dedicated bus lanes during peak hours.

Freeway Tunnel

Extends 710 North as a underground roadway; variations include single or twin tunnels; with or without tolls; with or without trucks; and possible express bus service lane.

Light Rail Transit

Serves communities from East Los Angeles to Pasadena, with connecting bus service for passengers traveling to adjacent communities.

No Build

Assumes zero transportation improvements beyond those already established in the Southern California Association of Governments (SCAG) Regional Transportation Plan (RTP), and scheduled to be constructed by 2035. The No Build Alternative is required and serves as the baseline against which all other alternatives are compared. 

Transportation System Management/Transportation Demand Management

Includes traffic signal upgrades and synchronization, local street and intersection improvements, connections to existing bus service, and promotes rideshare.

Next Steps:

  • Continue preparation of draft environmental document
  • Continue public outreach

Frequently Asked Questions

  1. Questions about the Environmental Review Process
  2. Questions about the Alternative Concepts
  3. Questions about Trucks/Goods Movement
  4. SR 710 Glossary of Terms


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