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I-605 Corridor Hot Spots Program

I-605 Corridor Hot Spots Program

About the I-605 Corridor “Hot Spots” Interchange Program
The I-605 corridor is part of Southern California’s freeway system, connecting commuters, travelers, and truckers between the densely populated Gateway Cities, San Gabriel Valley, Orange County Cities, and much of the region. The I-605, known as the “San Gabriel River Freeway,” is heavily used for local, regional, interregional, and interstate travel and commerce. The Corridor is home to ethnically diverse and historically rich neighborhoods and supports thriving commercial and industrial centers.

The I-605 is a hotbed of “Hot Spots”
The Los Angeles County Metropolitan Transportation Authority (Metro) completed a Feasibility Study analyzing and identifying several “hot spots” along the SR-91, I-605, and I-405 corridors. These “hot spots” are chronic traffic congestion areas attributed to population/employment growth, increased trucking activity due to economic growth in the goods movement industry, and deficiencies in design, capacity, and operations of an older freeway system.

Metro is currently undertaking environmental and final design approvals of Hot Spot improvement projects along I-605 and SR-91. The projects focus on the long-term needs of the I-605 corridor and short-term SR-91 and I-605 early action freeway improvement needs that can be completed within the next 3-5 years.

Proposed improvements for I-605 “Hot Spots”
Metro and the California Department of Transportation (Caltrans) in collaboration with the Gateway Cities Council of Governments and the San Gabriel Valley Council of Governments, are proposing improvements to this corridor, including:

  • Capacity and operational enhancements
  • Additional general purpose lanes
  • Ramp reconfigurations
  • Arterial intersection enhancements
  • Increased signage
  • Safety features

Learn about the projects
The I-605 Corridor Hot Spots Program includes various projects. Select the links below to learn how Metro plans to improve your drive.

  • I-605 Early Action Projects
  • I-605 at South St
  • SB/I-605 at Beverly Interchange
  • I-605 at Valley Interchange
  • SR-91 Early Action Projects
  • WB/SR-91 Project
  • SB-91 Central Ave
  • EB-91 Atlantic to Cherry
  • Long-Term Corridor Improvements
  • I-605 Corridor Project

About the I-605 Corridor Improvements Project
The Interstate 605 (I-605, the San Gabriel River Freeway) is one of the busiest and most congested transportation corridors in Los Angeles County, specifically between Interstate 105 (I-105) and Interstate 10 (I-10). Growth in the region’s population, employment, as well as in goods movement, are expected to further pressure to the existing traffic capacity and operations on I-605. To ease congestion and support future growth, operational, capacity and safety improvements are needed for the residents, businesses, travelers, and interstate commerce.

The Los Angeles County Metropolitan Transportation Authority (Metro) and the California Department of Transportation (Caltrans) District 7, in collaboration with the Gateway Cities Council of Governments (GCCOG) and the San Gabriel Valley Council of Governments (SGVCOG), are proposing improvements along I-605 between I-105 and I-10 as part of the I-605 Corridor Improvement project (project).

The project also proposes to includes improvements the following major interchanges: State Route 60 (SR-60), Interstate 5 (I-5), Interstate 105 (I-105) and Interstate 10 (I-10). Improvements to I-605 will enhance free operations, improving chronic traffic problems on one of Southern California’s most congested freeways.

Project goals
• Ease congestion and add freeway capacity where needed.
• Improve freeway operations, mobility, and travel times.
• Enhance regional connectivity and freeway interchange efficiency.
• Improve safety.

Funding
Project studies are being funded through local Measure R funds, the 2008 local sales tax. Metro will pursue additional federal, state and other sources for future phases of the project, including construction.

Background

The I-605 serves as one of the few major north-south interstate freeways in the greater Los Angeles Area of Southern California, running roughly 27 miles from the coast in Seal Beach, at its most southerly point, to the foothills in Irwindale/Duarte in the north. The operational conditions along the project corridor are deteriorating. In order to improve local circulation and connectivity to interstate commerce, I-605 improvements are necessary.

The I-605 provides public transit access to the Metro C Line (Green) light-rail in Norwalk Station at I-105, Metro Express Bus Line 577 running between I-10 and I-105, and a primary connection to the I-10, serving westbound Metro Silver Line riders at the El Monte station. Moreover, a number of Foothill Transit Commuter Express Lines run from the I-10 to SR-60 by way of the I-605.

Unfortunately, I-605 has gone without major system-wide improvements for roughly 50 years, since the construction of the first segment, Interstate 405 (I-405) to State Route 60 (SR-60), dating back to 1964 and the later portion completing construction in 1971.

Alternatives

Persistent congestion during AM/PM peak travel times is especially pronounced within the project limits. The project alternatives seek to improve overall circulation and safety. The I-605 project proposes improvements from approximately two miles south of the I-105 interchange to approximately two miles north of the I-10 Interchange; including enhancements to the SR 60, I-5, I-10 and I-105 interchanges.

A range of project alternatives have been developed. In general, all proposed build alternatives feature widening of the I-605 mainline freeway. Project alternatives include (see cross-sections, below):

  • Alternative 1 (No-Build): The No-Build Alternative would maintain the existing configuration of I-605 and would not result in improvements.
  • Alternative 2: Alternative 2 proposes the addition of one new mixed-flow lane on both the northbound and southbound I-605 mainline (except between I-5 and 1-105) and the conversion of the existing HOV lane to an express lane. The following additional peripheral improvements are also proposed with this build alternative:
    • Add a new general purpose/mixed-flow lane on westbound SR-60 from Hacienda Boulevard to the I-605/SR-60 system interchange
    • Add a new general purpose/mixed-flow lane on eastbound SR-60 from the I-605/SR 60 system interchange to 7th Avenue
    • Add a new HOV lane on northbound and southbound I-5 from Florence Avenue to Lakewood Bl
    • Add auxiliary lanes where necessary to enhance freeway operations
    • Reconfiguration of interchanges and modifications to local arterial streets to enhance freeway access
    • Add three HOV or ExpressLane direct connectors from north I-605 to west I-105, south I-605 to west I-105, and north I-605 to west I-10 with reverse movement for each
  • Alternative 3: Alternative 3 proposes the addition of one new express lane on northbound and southbound I-605, and the conversion of the existing HOV lane to create a two-lane express facility within project limits. The additional peripheral improvements as listed in Build Alternative 2 are also proposed with this alternative.
  • Alternative 4: Alternative 4 proposes the addition of a second HOV Lane on northbound and southbound I-605 to create a two-lane HOV facility within project limits. The additional peripheral improvements as listed in Build Alternative 2 are also proposed with this alternative.

I-605 Alternatives

Benefits

The project proposes work to on- and off-ramps, bridges, underpasses, and local connecting roadways which will greatly improve circulation on local streets and improve access to businesses, benefiting residents, travelers, commerce, and local communities. These include:

  • Reduction of average daily travel times on the I-605 from the I-105 to the I-10
  • Redesign of existing auxiliary merge and demerge locations to improve traffic flow and travel conditions
  • Improvements to interchange on- and off-ramp connections
  • Additional and upgraded existing intersections to increase traffic flow and safety
  • Additional and improved standard bicycle lanes on local streets to increase connectivity to the San Gabriel River trail
  • Reduction of the length of pedestrian/bicycle crossings to improve public safety
  • Enhanced pedestrian connections by adding new or upgrading existing sidewalks, pedestrian overcrossings, and pedestrian undercrossings
  • Improvements to equestrian crossings and enhance existing equestrian trails
  • Construct more than 100 new and replaced soundwalls to insulate communities from on-going traffic noise
Local Improvements by Jurisdiction

The project area includes nine cities and a number of county island communities. The table below outlines the range of additional local improvements proposed for each jurisdiction. See the project improvement map for reference.

Local improvements by jurisdiction

Public Involvement

The public has multiple opportunities and avenues for involvement during the environmental phase and is strongly encouraged to participate. A series of public meetings will be held in the study area to coincide with major project milestones. Public hearings will be held following circulation of the draft environmental documents. Comments and questions can be submitted at the meetings, submitted via regular US mail, or shared by phone at 213-922-4091. Interested parties are also encouraged to stay connected by signing-up to receive project notifications.

Process

Environmental studies, technical studies, and design considerations are now being undertaken to further evaluate the feasibility of each project alternative. An Environmental Impact Report/Environmental Impact Statement is being prepared to evaluate potential impacts of the project that could affect the quality of the human environment. At the end of the project phase, a Preferred Alternative will be selected.

The EIR/EIS is a legal joint document required under the California Environmental Quality Act and the National Environmental Policy Act (CEQA/NEPA), respectively. Upon completion, the document will:

  • Include a comprehensive description of the project and proposed alternatives,
  • Evaluate the project’s environmental effects, and
  • Inform decision-makers and the public of reasonable mitigations, if any, which could be employed to minimize or avoid adverse impacts.

A draft EIR/EIS will be publicly circulated for comment prior to completing the final EIR/EIS and selection of the Preferred Alternative. The environmental phase is scheduled to conclude in the spring of 2021.

Project Schedule/Environmental Timeline

I-605 Project schedule/environmental timeline

Meetings
2020 Public Hearings

Public hearings are planned for Summer 2020. Metro will continue to engage stakeholders throughout the study process and provide opportunities to:

  • Learn more about the overall project
  • Get details about the Technical Study currently underway
  • Ask questions
  • Share your thoughts
Past Meetings

2018 Community Meetings

February 6, 2018
Pico Rivera Senior Center, Pico Rivera

February 7, 2018
Lakeside Middle School, Norwalk

February 8, 2018
California Country Club, Whittier

2016 Scoping Meetings

October 24, 2016
Embassy Suites by Hilton, Downey

October 26, 2016
6:30 PM to 8:30 PM
Gus Velasco Neighborhood Center, Santa Fe Springs

October 27, 2016
Norwalk Assembly of God Church, Norwalk

November 1, 2016
Industry Hills Expo Center, Industry

November 2, 2016
South El Monte Senior Center, South El Monte

November 3, 2016
Palm Park Center, Whittier


About the I-605 Hot Spots Early Action Projects
The I-605 corridor is part of Southern California’s freeway system, connecting commuters, travelers, and truckers moving between the densely populated Gateway Cities, San Gabriel Valley, Orange County Cities. To ease congestion on this heavily used freeway, the Los Angeles Metropolitan Transportation Authority (Metro) is environmentally evaluating, designing, and constructing improvements on I-605.

I-605 “Hot Spot” Early Action Projects
Metro completed a Feasibility Study analyzing and identifying several “hot spots” along the SR-91, I-605, and I-405 corridors. These “hot spots” are chronic traffic congestion areas attributed to population/employment growth, increased trucking activity due to economic growth in the goods movement industry, and deficiencies in design, capacity, and operations of an older freeway system.

The Early Action “hots spot” Projects (EAP) on I-605 are currently undergoing environmental assessment or final design approvals and will be constructed within the next 2-5 years. The EAP’s have been developed and advanced to address the short-term needs on I-605. These projects are focused on improving some of the most congested section of I-605.

Proposed Early Action Improvements I-605
Metro and the California Department of Transportation (Caltrans) in collaboration with the Gateway Cities Council of Governments and the San Gabriel Valley Council of Governments, are proposing early action improvements to this corridor, including:
• Operational enhancements
• Ramp reconfigurations to enhance safety
• Arterial intersection enhancements
• Auxillary lane improvements
• Safety features

Learn About the EAP Projects that improve your drive:
I-605 Early Action Projects
I-605 at South St
SB/I-605 at Beverly Interchange
I-605 at Valley Interchange


About the SR-91 Early Action Projects
State Route 91 (SR-91) is a major east-west transportation corridor and is integral to the Southern California freeway network. To improve traffic flow along the freeway, the Los Angeles County Metropolitan Transportation Authority (Metro) and the California Department of Transportation (Caltrans) District 7, in collaboration with the Gateway Cities Council of Governments (GCCOG) are proposing improvements on SR-91.

SR-91 Early Action Projects
Metro completed a Feasibility Study in 2015 which analyzes and identifies several “hot spots” on SR-91. These “hot spots” are chronic traffic congestion areas attributed to population/employment growth, increased trucking activity due to economic growth in the goods movement industry, and deficiencies in design, capacity, and operations of an older freeway system.

The Early Action “hots spot” Projects(EAP) on SR-91 are currently undergoing environmental assessment for final design approvals and will be constructed within the next 2-5 years. The EAP’s have been developed and advanced to address the short-term needs on SR-91. These projects are focused on improving some of the most congested sections of SR-91.

Proposed Early Action Improvements SR-91
Metro and the California Department of Transportation (Caltrans) in collaboration with the Gateway Cities Council of Governments and the San Gabriel Valley Council of Governments, are proposing early action improvements to this corridor, including:

  • Operational enhancements
  • Ramp reconfigurations to enhance safety
  • Arterial intersection enhancements
  • Auxillary lane improvements
  • Safety features

Learn About the EAP Projects
Select the links below to learn how Metro plans to improve your drive.
SR-91 Early Action Projects
WB/SR-91 Project
SB-91 Central Ave
EB-91 Atlantic to Cherry