Brightline West announced another round of field investigation work projects in Southern California.

The work in preparation for the 218-mile high-speed rail project from Las Vegas to Rancho Cucamonga will occur at several locations within the rail corridor along the Interstate 15 right-of-way.

The work will include geotechnical borings and samplings, utility potholing and land surveying, Brightline West officials stated.

Work will take place primarily during daytime hours with some work at night to minimize disruption to traffic. In some instances, short-term closures of freeway shoulders will be required.

All work will be done in compliance with applicable environmental regulations and coordination with Caltrans, Brightline West said.

Motorists should proceed cautiously through work zones and adhere to posted detour signs, speed limits and other signage.

Brightline West officials announced additional updates to field investigation work in June 2025, for its planned $12 billion Las Vegas to Southern California high-speed rail project.

Dates and times are subject to change. These operations are weather-dependent.

Updated Brightline West project areas in Southern California include:

Zzyx Road and I-15: Geotechnical boring will be performed in the I-15 freeway median for the wildlife crossing bridges from 7 a.m. to 4 p.m. from June 25 to 27. Work will be performed approximately 3.5 miles south of Basin Road (Cady Mountain), and .5 miles south of Zzyzx Road (Soda Mountain). Basin Road and I-15. Pavement cores will be performed at night on the southbound shoulders of the I-15 freeway, 3.5 miles south of Basin Road to the Old Hwy 58 interchange from 10 p.m. to 4 a.m. on June 26.
Mojave Drive and I-15: From 7 a.m. to 3 p.m. on June 23, 24, 25 and 27, pavement cores will be performed on the shoulder of the I-15 freeway, from Mojave Drive to Oak Hill Road,
Kelbaker Road and I-15: From 7 a.m. to 3 p.m. from June 23 to 27, bridge potholing will be performed at the interchanges on I-15, between Kelbaker Road south to the State Route 210 freeway interchange.
Razor Road and I-15: From 7 a.m. to 5 p.m. on June 24, infiltration testing will be performed in the I-15 center median approximately 1 mile south of Razor Road.

Brightline West officials announced additional updates to field investigation work in June 2025, for its planned $12 billion Las Vegas to Southern California high-speed rail project.

The Brightline West project includes a flagship passenger station in Las Vegas and stops in Apple Valley, Hesperia and Rancho Cucamonga.

Field testing has continued after Brightline West hosted a groundbreaking for its high-speed rail system in Las Vegas in April 2024.

In February 2025, Nevada Department of Transportation officials were told by Brightline officials that construction of the rail project would begin within the next two months.

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Daily Press reporter Rene Ray De La Cruz may be reached at [email protected]. Follow him on X @DP_ReneDeLaCruz

This article originally appeared on Victorville Daily Press: Brightline West work on Las Vegas to High Desert, LA area takes another step