🚧Traffic Advisory: US 101 / SR 25 Interchange Project (Dec 22-26, 2025)🚧

Notice Cause
Construction
Notice Effect(s)
Lane Closure
Noise
Noise and Vibration
Traffic Delays
Start Date
End Date

Related

US 101/SR 25 Interchange - Phase 1
What
Graphic map showing traffic impacts at the US 101 and State Route 25 interchange. US 101 runs north–south, labeled “To San Jose” northbound and “To Salinas” southbound. State Route 25 runs east–west and crosses under US 101. Orange lines and construction worker symbols indicate active construction zones along SR 25 and the US 101 ramps. Traffic lanes are shifted, with work areas marked by orange signage. A railroad line is shown to the east of the interchange. A note on the map states that some work may pau

Traffic Signals & Striping (Near SR 25 / Northbound US 101 Ramps)

  • Temporary traffic signal installation continues at:
    • SR 25 / US 101 Stage 2B area
    • Primarily night work
  • Work supports upcoming traffic staging, not final signals.

What residents will notice

  • Nighttime crews
  • Temporary signal equipment is already visible
  • No new closures announced this week

Traffic Control & Safety Setup

  • Safety barriers and protective cushions will stay in place.
  • These are located along:
    • Highway 25
    • The northbound US 101 on-ramp and off-ramp
  • This is ongoing safety setup work, not new closures or changes.

What residents will notice

  • Same cones and barriers
  • No sudden changes to driving patterns

Bridge & Structure Work

Work continues on major bridge elements, mostly off the roadway:

Southbound US 101–Eastbound SR 25 Connector

  • Abutment and footing work
  • Pile driving earlier in the week

Route 25 / US 101 Overcrossing Work

  • Crews are building vertical support walls that help hold up the bridge.
  • Workers are installing large underground support columns (piles) that form the foundation of the new overcrossing.

What residents will notice

  • Construction noise during approved hours
  • Activity set back from live traffic lanes

Environmental Monitoring

  • Paleontological and archaeological monitors are on site whenever crews dig deeper than 3 feet or work near sensitive areas.
  • This is standard compliance work and continues through the week, except on holidays.
Why

Construction Work Summary

  • This is a holiday week, so activity is limited.
  • December 25–26 are holiday no-work days for many crews.
  • No new long-term traffic pattern shifts start this week.
Community Impacts

What Is Not Happening This Week

  • ❌ No new traffic stage shifts
  • ❌ No major daytime closures announced
  • ❌ No striping or permanent barrier installs (those start January 2026)
  • ❌ No public detours introduced