Measure I: I-10 HOV Lanes - Ontario to Redlands
Early project development work began in 2007 for the addition of high occupancy vehicle lanes to Interstate 10 between Ontario and Redlands. SANBAG is working with Caltrans to perform preliminary engineering and conduct environmental studies for the addition of these new lanes, more commonly referred to as carpool lanes.
- I-10 HOV Fact Sheet
- In English
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Learn more:
- Project overview and significance
- Traffic and truck data (2007)
- Engineering and environmental work
- Estimated project cost
- Contact info
- Sign up to receive project information via email
Project Overview & Significance
Plans call for adding a carpool lane in each direction along a 25-mile segment from Haven Avenue in Ontario to Ford Street in Redlands. Interstate 10 currently has carpool lanes west of Haven Avenue; this project will allow the extension of these lanes east through the San Bernardino Valley, including the cities of Ontario, Fontana, Rialto, Colton, San Bernardino, Loma Linda and Redlands, as well as San Bernardino County unincorporated areas along the I-10 corridor. See the project map...
In addition to the new carpool lanes, the project proposes to:
- Widen existing undercrossings,
- Reconstruct several freeway overcrossings,
- Construct a concrete median barrier,
- Add auxiliary lanes, and
- Improve drainage conditions
The section of Interstate 10 through the San Bernardino Valley is one of the most congested freeway segments in San Bernardino County. This is a heavily-used commuting route, and carpool lanes will help encourage ridesharing in this area.
I-10 also is designated as a Trade Corridor of National Significance and is a principal truck route from Los Angeles to Arizona, Texas and the Gulf Coast states. A number of interchange improvement projects also are planned along I-10 in this region. These improvements along the I-10 corridor will improve traffic flow, interchange operations and access to critical destinations, including logistics centers in the Fontana/Rialto area, hospitals in Colton and Loma Linda, and the San Bernardino International Airport, the former Norton Air Force Base.
SANBAG advanced funds from its Measure I 2010-2040 program to begin this early project development work. Funding for future phases of this project, including design and construction, will be provided in part by future Measure I revenue.
Traffic & Truck Data (2007)
Source: Caltrans and Southern California Association of Governments
- Between 204,000 and 237,000 vehicles travel each day on this section of
I-10 through San Bernardino County. - Forecasts show that between 240,000 and 270,000 vehicles are expected to use this section of freeway by 2030.
- Up to 24,000 trucks move freight through this area each day.
- Between 13,000 and 15,000 of these trucks are considered to be “big rigs” with five axles or more.
- Lengthy traffic queues occur daily for both eastbound and westbound motorists. Delays are much greater on Friday evenings and holiday weekends.
Engineering & Environmental Work
As part of the preparation of the project report and environmental document, studies related to engineering and environmental disciplines will be completed. These studies, combined with input from local jurisdictions and the public, will lead to the recommendation of a preferred project alternative.
Engineering studies to be conducted during this phase will include land surveying and mapping, traffic operations, railroad operations, public utilities, right of way needs and drainage. Environmental studies will include air quality, community impacts, cultural and historic properties, hazardous materials, noise, sensitive plants/wildlife, water quality, and visual impacts.
In addition, project engineers will develop and refine project alternatives, create geometric drawings for the alternatives, establish the methods that will be used to evaluate the alternatives, perform the alternatives analysis, and establish the project purpose and need. Preliminary cost estimates also will be developed for future project phases, including final design, right of way acquisition and construction.
Several alternatives will be considered during this phase of the project. The alternatives are as follows:
- Full Standard Build Alternative: This alternative would provide a carpool lane in each direction of the freeway with a standard 10-foot inside shoulder and a carpool lane buffer. This alternative includes construction of a concrete median barrier and reconstruction of some overcrossings to accommodate the carpool lane widening. Auxiliary lanes also are proposed at select locations to facilitate movement of traffic entering and exiting the carpool and general purpose lanes.
- Reduced Standard Build Alternative: This alternative is similar to the Full Standard Build Alternative, but proposes non-standard shoulder widths where constraints, such as existing bridge columns, do not allow a full standard shoulder. In addition, the reduced standard alternative would provide non-standard shoulder widths at locations where the reduced widths would result in minimized impacts to local streets and freeway noise walls. These non-standard shoulder widths would vary between 1 foot and 9 feet.
- No Build Alternative: This alternative would maintain the project segment of the freeway in its current condition – without the proposed carpool and auxiliary lanes.
The project report and the environmental document are scheduled to be completed by late 2010. Final design and right of way acquisitions may be approved and certified by 2014. Pending the availability of funds, construction could begin by 2015 and be complete by 2018. These dates are approximate and are subject to change.
Estimated Project Cost
The total estimated project cost is $1.2 billion. This cost estimate is based on information from the SANBAG Measure I 2010-2040 Strategic Plan and does not take into account future cost escalations.
SANBAG will explore funding sources for final design, right of way acquisition and construction of this project. Potential funding sources include federal and state allocations, Proposition 1B bond revenue and Measure I , the half-cent sales tax for transportation improvements in San Bernardino County.
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San Bernardino Associated Governments |
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