Project Description

The Montebello Corridor Grade Separation Project is comprised of two separate components which impact four current at-grade crossings with the Union Pacific Railroad (UPRR) within the City of Montebello. 

Montebello Boulevard Grade Separation Project: Construction of a bridge at the UPRR crossing at Montebello Boulevard and at Olympic Boulevard, creating a roadway underpass at both.

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At-Grade Safety Improvements: Upgrades to the signals and construction of pedestrian crossing safety enhancement measures at the Greenwood Avenue, Maple Avenue, and Vail Avenue crossings; installation of medians at the Greenwood Avenue and Vail Avenue crossings to prevent vehicle drive-arounds. 

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Project Status

The Montebello Boulevard Grade Separation Project and the At-Grade Safety Improvements are in the final engineering and design phase. A construction contract was awarded Summer 2023 with pre-construction activities currently underway.  Construction is anticipated to begin late Winter 2023-2024 and be completed and opened to traffic by fall 2027. The overall estimated project cost is $190.8 million.

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Project Benefits

The project will eliminate crossing collisions, queuing and congestion, and reduce vehicle emissions. An average of 49 trains per day traverse Montebello and 10 collisions have been recorded at Montebello’s crossings, resulting in 3 fatalities and 2 injuries. Without the project, growing train and vehicle traffic will result in an approximate doubling of vehicle-hours of delay at the busiest crossing, Montebello Boulevard, which carries an average of 21,000 vehicles a day.

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