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This high-speed rail project, with Caltrans serving as the Authority's contractor, will move State Route 99 from Clinton to Ashlan approximately 100 feet to the west to make way for the high-speed rail line.


The realignment is part of the high-speed rail corridor of projects within the Merced to Fresno project section. This realignment accommodates the high-speed rail system between the existing freeway and the Union Pacific Railroad. Additionally, the alignment project will improve traffic operations, reduce congestion and enhance traffic safety.


The project scope will include:

  • Three through lanes with one auxiliary lane for each direction of travel on State Route 99.
  • A reconfigured interchange at Clinton Avenue, which includes replacing the Clinton Avenue Overcrossing.
  • New overhead structures that span the railroad tracks at Clinton and Ashlan Avenues to meet horizontal and vertical clearance requirements of the high-speed train.
  • Re-routed and cul-de-saced local streets to accommodate the realigned freeway and maintain traffic flow.
  • Infrastructure for the high-speed rail project with these limits.
  • Closure of ramps at Princeton, Shields and Dakota Ave.


The 99 Realignment project is expected to last into the summer of 2018.


Michael Weber, Caltrans Construction Engineer, walks us through the 99 Realignment project in Fresno. He explains how the Clinton Ave. and Ashlan Ave. bridges will be torn down and rebuilt to accommodate high-speed trains.

For project details and traffic impacts visit http://99realignment.blogspot.com/.

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Use QuickMap to find information on how high-speed rail construction is impacting road travel in your area. You can also find real-time traffic information from across the state, including traffic congestion, lane closures, and chain controls.