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Avenue 17 Grade Separation

COMPLETED: The Avenue 17 Grade Separation project in Madera County was completed in October 2025.

Madera, California
Central Region
Phase 1
Merced to Fresno
Construction Package 1
Grade Separation
Location: Avenue 17 between State Route 99 and Road 28 1/2

2025-10-07-Avenue_17_Grade_Separation-06

UPDATED OCTOBER 2025: The California High-Speed Rail Authority announced on October 30, 2025, the completion of the Avenue 17 Grade Separation project in Madera County. Avenue 17 is the eighth structure to be opened to traffic this year, bringing the total number of structures completed to 57. Once a cul-de-sac ending at the BNSF railroad tracks, the grade separation will now serve as a new through roadway improving east-west mobility for the surrounding community while reducing emergency response times for the area.

Located between Lake Street and Raymond Road, the Avenue 17 grade separation spans 614 feet long and is more than 43 feet wide. The grade separation is also equipped with a pedestrian walkway, allowing vehicular traffic and pedestrians to cross over the BNSF and future high-speed rail tracks.

Construction for the Avenue 17 grade separation began in June 2023. The overcrossing is comprised of 21 pre-cast concrete girders, 8,190 cubic yards of concrete, and 1,846,374 pounds of steel. Contractor Tutor-Perini/Zachry/Parsons oversaw construction.

Feet Long

Feet Wide

Cubic Yards of Concrete

Updates Per Project

May 21, 2025

At Avenue 17 in Madera County, crews are continuing to work on the superstructure of the future overpass. Recently, workers completed the rebar and concrete placement for the deck of the structure. The east and west approaches are also taking shape as crews continue to backfill and place MSE wall panels. The four-span structure will serve as a new roadway for Madera County taking vehicular traffic and pedestrians over the future high-speed rail and existing BNSF railroad tracks. The structure will be 614-feet long and more than 43-feet wide when complete.

May 21, 2024

The Avenue 17 Grade Separation is one of the latest construction sites to break ground this year. Located between Lake Street and Road 28 ½ in Madera County, crew members have been busy on the foundations and substructure on both sides of the existing +train tracks. The future grade separation will be more than 614-feet long and 43-feet wide. Once complete, the grade separation will carry traffic over the future high-speed rail lines and BNSF tracks

May 20, 2024

At Avenue 17 in Madera County, crews have placed concrete for both abutments and the seven columns needed for the substructure of the future overpass. Crews are now completing the bent caps, the portion on top of the columns that girders will be placed on in the near future. When completed, Avenue 17 will become a thru road taking traffic over the BNSF railroad and future high-speed rail tracks. The overcrossing will span 614-feet long when completed.