Traffic congestion at the Highway 101/25 interchange. Photo by Noe MagaƱa.
Traffic congestion at the Highway 101/25 interchange. Photo by Noe MagaƱa.

Information provided by Caltrans District 5. Lea este artículo en español aquí.

Date:Ā November 17 – November 21, 2025
Work Hours:Ā Daytime construction with intermittentĀ nighttime lane closuresĀ on northbound US 101.Ā Night work between 8 p.m. and 5 a.m.
Location:Ā Construction zones are active alongĀ US 101 near SR 25Ā and adjacent connector ramps.

Ā What to Expect

  • Bridge Construction:Ā Crews will continue forming and pouring bridge columns and abutments for the new US 101/SR 25 connector and separation structures. Equipment will be moved into the freeway median during overnight hours, requiring shortĀ traffic breaks and US 101 northbound #1 lane closures.
  • Roadway Grading:Ā Grading, compaction will continue alongĀ the Highway 101 median.
  • Barrier and Electrical Work:Ā Crews are removing temporary barriers and continuing electrical installations in the median area.
  • Stormwater and Environmental Work:Ā RegularĀ stormwater protection inspectionsĀ andĀ environmental monitoringĀ (archaeological and paleontological) will be ongoing.

Traffic Impacts

  • ExpectĀ occasional nighttime lane closuresĀ on US 101 northbound #1 lane near SR 25 for bridge access work.
  • Reduced speedsĀ andĀ brief delaysĀ may occur.
  • No detoursĀ will be in place next week.
  • Electronic message boards and on-site flaggers will guide motorists through the construction area.