Traffic Management System Improvement Project Underway In Siskiyou and Shasta Counties


REDDING – The California Department of Transportation (Caltrans District 2), in conjunction with Cal Electro Inc., has begun work on the North Canyon TMS Improvement Project in Siskiyou and Shasta Counties.  The $2.3 million project, which is funded in part by Senate Bill 1, will be constructing a microwave communications hub and access at Mt. Bradley, approximately 3 miles west of Interstate 5 near Dunsmuir, along with making traffic management system improvements at these areas along Interstate 5 and State Route 89:


  • Construction of new microwave tower at Abrams Lake Overcrossing on Interstate 5 in Siskiyou County
  • Construction of new Closed-Circuit Television (CCTV) and Roadside Weather Information System (RWIS) on State Route 89 near Pondosa Way in Siskiyou County.
  • Upgrade of CCTV and RWIS on State Route 89 near Snowman Summit in Siskiyou County.
  • Paving of maintenance vehicle turnouts at these locations.

Construction activities began on Monday, June 8.  Motorists can expect intermittent periods of one-way traffic control near Snowman Summit and Pondosa Way on State Route 89 through the end of July.  During these times motorists can expect 15-minute delays, Mondays-Fridays during daytime hours.  The project is currently anticipated to be completed by the spring of 2021.


Construction projects are subject to changes without prior notice.  Caltrans and its contractors do our best to keep the public informed.  To stay up to date on highway projects, please follow us on Facebook and Twitter.  The public can also call (530) 225-3426 during working hours or send an email to with questions.

Through Senate Bill 1, Caltrans has committed to repair or replace 17,000 miles of pavement, 7,700 traffic signals, signs, and sensors, 55,000 culverts and drains, and 500 bridges by 2027.


The State’s transportation system is a high priority for California.  As the Caltrans 2020 Construction Season has begun, North Region Construction and District 2 are aiming to follow construction operations as scheduled while monitoring developments related to the COVID-19 emergency. 

Page text body will be here.