Northbound and southbound daily lane closures (beginning to end of a work shift) during the first four to six weeks will be followed by long-term lane closures during which southbound traffic will be crossed over to the northbound lanes for the remainder of the construction season. This means traffic will be restricted to a single lane in the southbound direction while two lanes will be available for northbound traffic pulling the grade.

Traffic in both north and southbound lanes on Interstate 5 will be affected when work begins next month on the second phase of the Dunsmuir Grade Project on Interstate 5, just south of the California Highway Patrol Truck Scales to the Sacramento River Bridge.

Construction crews are preparing to begin work in April, but the actual start date is heavily dependent on weather conditions, Caltrans reported this week.

The Dunsmuir Grade Project’s total cost is $57 million and J.F. Shea Construction is the prime contractor. Phase I, from Mount Shasta to the Truck Scales was completed in 2018. Phase II is anticipated to be complete by the end of the year.

“The roadway will be replaced in the southbound lanes only, but traffic will be affected in both directions,” said Sean Shepard, Caltrans Project Manager. “Our intention is to work closely with the Dunsmuir business community and local residents so that every stakeholder understands the scope of work and how traffic may be affected during construction.”

Northbound and southbound daily lane closures (beginning to end of a work shift) during the first four to six weeks will be followed by long-term lane closures during which southbound traffic will be crossed over to the northbound lanes for the remainder of the construction season. This means traffic will be restricted to a single lane in the southbound direction while two lanes will be available for northbound traffic pulling the grade.

“We understand construction may cause inconveniences to commuters and that nobody welcomes disruption,” said John Hinton, Caltrans Area Construction Engineer for Siskiyou County, “but we are committed to informing the public and local stakeholders efficiently while we do our best to minimize inconveniences and disruption.”

In conjunction with the long-term lane closures, long-term ramp closures with detours will include the southbound Mott Road on and off ramps and southbound Dunsmuir/Siskiyou Ave (North Dunsmuir) on and off ramps.

“Ramp closures will be required for the Dunsmuir Avenue (Central Dunsmuir) off-ramp as well,” added Nicole Mallory, Caltrans Resident Engineer, “but these closures will be limited in duration, will be minimized to the extent feasible, and will only occur when the Dunsmuir/Siskiyou Ave (North Dunsmuir) ramps are open. We are excited to begin this second phase of the project and are confident the public will enjoy the new roadway once it is complete.”

The Caltrans District 2 Public Information Office will be in direct communication with the community in Dunsmuir as well as with other key stakeholders.

For questions or concerns specific to this project contact Public Information Officer (PIO) Lupita Franco via email at Maria.Franco@dot.ca.gov or by phone at (530) 225-3013.

The traveling public may also find traffic updates as follows:

Website: http://www.dot.ca.gov/d2/

Facebook: Caltrans District 2

Twitter: @CaltransD2

Office: (530) 225-3426 Monday through Friday, 8 a.m. to 5 p.m.

Email: D2PIO@dot.ca.gov

You an also download the Quickmap App or look online at quickmap.dot.ca.gov for traffic information.