VCTC | Our Future 101

The Ventura County Transportation Commission (VCTC) recognizes that the 101 is congested and needs to be addressed. The purpose of this project is to:

• Reduce existing congestion
• Improve traffic operations
• Accommodate future traffic volumes forecasted in this area

With this in mind, this project may include some of the following:

• Additional lanes on the 101 freeway designated for high-occupancy vehicles (HOVs), also known as carpools
• Auxiliary lanes between interchanges
• On-ramp or off-ramp improvements
• Ramp intersection improvements

The Ventura County Transportation Commission (VCTC) is the project sponsor. VCTC is working in partnership with the California Department of Transportation (Caltrans), which will be the lead agency for the development of a combined California Environmental Quality Act (CEQA) Environmental Impact Report (EIR) / National Environmental Policy Act (NEPA) Environmental Assessment (EA).

The Federal Highway Administration (FHWA) has an oversight role because this project proposes to make improvements to a federal route (US 101). The four Ventura County cities (Camarillo, Thousand Oaks, Oxnard and Ventura) through which US 101 passes and the County of Ventura are represented on the Project Development Team to guide the preparation of the EIR/EA. Many other state and federal agencies are consulted during the development of this project.

Congestion in the project area is already bad. The population in the region has grown by 45% since 1990 and is projected to continue to grow although at a slower pace. Currently, the 101 operates at Level of Service (LOS) C to LOS F in the morning and evening peak periods, which means that cars are not moving at free flow speeds.

• A high-occupancy vehicle lane, or HOV lane, is another name for a carpool lane. Carpool lanes are sometimes known as diamond lanes because painted diamonds differentiate HOV lanes from general purpose lanes.
• General purpose lanes are intended for general use with no specific designation for the type of vehicle or the operational characteristics of the lane. Truck lanes are intended for trucks, and HOV lanes are intended for HOVs.
• Auxiliary lanes allow vehicles to enter and exit the flow of traffic between interchanges without impacting the speed in the general purpose lanes. They begin where an on-ramp joins the freeway and end where an off-ramp exits the freeway and are sometimes referred to as acceleration or deceleration lanes.

The Project Development Team has chosen three alternatives to move into the next step. These alternatives are:

• Alternative 1 – No Build
• Alternative 2 – Add an HOV/Express Bus Lane in each direction
• Alternative 3 – Add an HOV/Express Bus Lane in each direction, with design variations

In general, the alternatives were structured to gain the greatest improvement in traffic conditions and safety levels relative to the costs involved.

HOV lanes move more people in fewer cars traveling at higher speeds than general purpose lanes. HOV lanes are being considered to minimize the impact of improvements. HOV lanes do not currently exist in the project area. The addition of HOV lanes also provides a new option for an improved trip. Buses (including inter-city buses) are high-occupancy vehicles and can use the HOV lanes, which removes them from the general purpose lanes, providing them with a shorter and more reliable trip time compared to general purpose lanes and making transit service more attractive to commuters and travelers.

A general purpose lane alternative was evaluated in the alternatives analysis phase. The width of a general purpose lane alternative is similar to the width of Alternatives 2 and 3, and as such, the physical impacts and cost of a general purpose lane alternative are similar to Alternatives 2 and 3. A general purpose lane does not move as many people as quickly or reliably as an HOV lane alternative. For those reasons it was eliminated from further consideration.

Construction cost estimates range from $1.8 billion to $2.3 billion depending on the alternative. These cost estimates will continue to be refined as the project progresses.

This current phase of the project is funded through Ventura County’s share of federal Surface Transportation Block Grant (STBG) funds, formerly known as Surface Transportation Program (STP) funds. Design and initial construction will be funded by Ventura County’s share of STBG and State Transportation Improvement Program (STIP) funds. Possible future funding sources include Federal and State grants and other local sources.

The environmental document evaluates benefits and impacts in topics such as, but not limited to:

• Aesthetics
• Agricultural Resources
• Air Quality
• Biological Resources
• Community and Neighborhoods
• Construction Impacts
• Cultural and Historic Resources
• Farmlands
• Geology and Soils
• Greenhouse Gas Emissions
• Growth
• Hazards and Hazardous Materials
• Hydrology and Water Quality
• Land Use and Planning
• Land Acquisitions, Displacement and Relocation
• Noise and Vibration
• Paleontological Resources
• Parks and Recreation Areas
• Public Services
• Transportation/Traffic
• Tribal Cultural Resources
• Wildfire

All of these study topics as well as public comments on the draft EIR/EA will contribute to the overall decision on a preferred alternative.

All property that will potentially be impacted has been identified during the preparation of the environmental document. Properties that are anticipated to be impacted by the project are identified in Section 2.2.8, Relocations and Real Property Acquisition, in Chapter 2 of the draft EIR/EA. It will not be known for certain which properties will be impacted until an alternative is selected, and the project proceeds to the final design phase.

The benefits and impacts of local interchange and ramp improvements were evaluated at locations where the project causes traffic growth or where improvements on the freeway general purpose lanes require realignment of ramps. However local intersections are not being impacted or modified.

The project will be built over the course of many years. Construction will be phased, but the plan for construction phasing has not been finalized. Construction phases will depend on highway operations and timing of funding availability.

Because of the scale of the project and the amount of money it will take to pay for the construction, VCTC currently estimates that construction will be complete by 2040. If full funding is available sooner, then construction will start sooner. Initial funding for construction is programmed for Fiscal Year 2031. The actual construction period can only be determined once an alternative has been selected and the construction funding plan is determined.

A decision on the preferred alternative is currently anticipated in 2027 after circulation of the draft EIR/EA.

Based on the project development process, the project is currently in the Project Approval and Environmental Document phase. In this phase, each of the three alternatives have been analyzed based on specific evaluation criteria to help gather information needed to choose one final alternative. A draft EIR/EA, also referred to herein as “environmental document,” has been prepared and will be released for public review and comment on Wednesday, September 30, 2026. A 60-day public review period will start September 30, 2026 and end December 7, 2026. Public hearings will be held at the locations listed under Get Involved.

VCTC believes public comments are a vital component of the environmental study process and inform decision makers on how Ventura County residents feel about this project and its components. Public input allows for a more holistic project design that better addresses the needs of the public. Public comments can be submitted via the project website, or mailed to:

Susan Tse Koo, Senior Environmental Scientist
California Department of Transportation
Division of Environmental Planning
100 South Main Street, MS 16A
Los Angeles, CA 90012

or via email to Susan.Tse@dot.ca.gov. Comments must be received by 11:59 p.m. on Monday, December 7, 2026.

Feel free to email questions about the project at info@ourfuture101.org.

See the Get Involved tab for information on upcoming public hearings and engagement opportunities.

Feedback provided by stakeholders and the general public allowed for the consideration of alternatives beyond those presented in the public scoping meetings. While only the No Build and two Build Alternatives are proceeding for further study, many alternatives were considered and reviewed during the alternatives analysis phase to ensure the two build alternatives best meet the purpose and need of the project.

The US 101 Improvement Project considered city plans for bicycle (and pedestrian) facilities on local streets. In locations where construction will occur on local streets, and where planned facilities are consistent with Caltrans standards (sidewalks, required shoulders that could be used as bike lanes), the US 101 Improvement Project will include them for the safety of all users including drivers, pedestrians and bicyclists. In addition, VCTC adopted the 101 Communities Connected Multimodal Corridor Study in 2021, which evaluates existing and future multimodal transportation networks along with recommendations for and phasing of improvements. Projects and strategies from 101 Communities Connected are incorporated into the proposed mitigation program for the 101 Improvement Project.

The environmental study and documentation process address both impacts to the natural environment and the built environment. The project team followed the guidelines set forth by CEQA and NEPA.

As part of the development of the environmental document, the project team studied potential impacts to both cultural and historic resources located along the project corridor. The potential for these resources to be impacted is disclosed to the public within the environmental document.

The US 101 Improvement Project considers how improvements will benefit or impact all users, including the public transportation system. Additionally, other studies address the overall public transportation availability and need throughout the county. The proposed Vehicle Miles Traveled (VMT) mitigation program for the US 101 Improvement Project includes improvements to passenger rail and bus transit. See VCTC’s local bus page for all local transit options.

As a part of the initial planning phase, the design team considered alternatives that were presented at the public scoping meetings and those that resulted from stakeholder and public feedback during the scoping process. The team considered options that include HOV lanes because they address the purpose and need of the project and provide a higher benefit when compared to non-HOV alternatives.

Lighting along the freeway has been considered as a part of potential safety improvements. At ramp entrance and exit locations, safety lighting will be replaced where impacted.

Public transit access to the improved facility was considered to provide US 101 users additional choices in mode of transportation and minimize impact to existing public transit services. Additionally, buses will utilize the HOV lanes thereby removing them from the general purpose lanes and increasing efficiency in reaching destinations.

The project team studied wildlife in the area and the project’s potential impacts as part of the environmental document process. Section 2.4, Biological Environment, in Chapter 2 of the draft EIR/EA, provides information regarding the wildlife studies conducted, potential impacts to biological resources, and measures that have been incorporated into the project to avoid and minimize impacts to biological resources.

As a separate project, through a grant from the Caltrans Sustainable Transportation Planning Grant program, VCTC partnered with the National Park Service to study wildlife movement in the Conejo Pass area, also known as the Conejo Grade. The wildlife tracking study is anticipated to be completed during the Project Approval and Environmental Document phase of the project and any pertinent measures associated with that study will be included in the final EIR/EA for the US 101 Improvement Project.

The project will comply with all local, state and federal ordinances and guidelines pertaining to wildlife movement, specifically the recently approved Habitat Connectivity and Wildlife Corridor Ordinances. How the project interacts/intersects with the recently adopted wildlife corridor ordinance and the potential for conflicts were analyzed. As detailed in Section 2.4.1, Natural Communities, in Chapter 2 of the draft EIR/EA, the project would not conflict with policies and ordinances protecting biological resources, including wildlife crossings. Regional wildlife movement is a growing concern that has been recognized by Caltrans. As part of the development of the draft EIR/EA, project biologists studied wildlife movement throughout the project corridor. Existing wildlife movement, potential project impacts to movement, as well as avoidance and minimization measures, will be a component of the environmental document.

As a separate project, through a grant from the Caltrans Sustainable Transportation Planning Grant program, VCTC partnered with the National Park Service to study wildlife movement in the Conejo Pass area, also known as the Conejo Grade. The wildlife tracking study is anticipated to be completed during the Project Approval and Environmental Document phase of the project and any pertinent measures associated with that study will be included in the final EIR/EA for the US 101 Improvement Project.