TRAFFIC ADVISORY: Overnight Work Scheduled for Thursday, July 17 & Friday, July 18, 2025

Notice Cause
Construction
Notice Effect(s)
Detour
Lane Closure
Noise
Traffic Delays
Start Date
End Date
What
Traffic advisory Notice Map (US 101/SR 25) 7/2025

TRAFFIC ADVISORY: Overnight Work Scheduled for Thursday, July 17 & Friday, July 18, 2025

Work Locations

  • West of the Southbound US 101 off-ramp to northbound SR 25
  • Along northbound SR 25, from just past the railroad crossing to the Garlic Shoppe (north side)

Night Work Schedule

Thursday, July 17

  • 6:00 PM – 9:00 AM (ends Friday, July 18)
    • Southbound US 101 On-Ramp from Route 25
  • 9:00 PM – 5:00 AM (ends Friday, July 18)
    • Southbound US 101 Off-Ramp to Route 25

Friday, July 18

  • 6:00 PM – 9:00 AM (ends Saturday, July 19)
    • Southbound US 101 On-Ramp from Route 25
  • 10:00 PM – 5:00 AM (ends Saturday, July 19)
    • Southbound US 101 Off-Ramp to Route 25

For additional information, please visit the project page at www.vta.org/sr25, email Community Outreach at community.outreach@vta.org, or call 408-321-7575.

Why

As part of Phase 2 construction for the US 101/SR 25 Interchange Project, crews will conduct overnight grading and excavation work. 

Detour
US 101 Southbound off-ramp closure to SR 25 (Detour Map)
Detour map if traveling southbound US 101 to SR 25.

Detour for US 101 southbound off-ramp to Highway 25:

  1. Stay on southbound US 101 past the closed off-ramp exit.
  2. Take the Betabel Road off-ramp exit.
  3. Turn left at Betabel Road, cross over US 101, and take the US 101 northbound on-ramp entrance.
  4. Stay on northbound US 101 and take the off-ramp exit to Highway 25.
SR25 Traffic Advisory Map 7.2025
Detour for Northbound Route 25 to Southbound US 101 Closure

Detour for Northbound Route 25 to Southbound US 101 Closure: 

  1. From Northbound SR 25: Motorists approaching the closed connector will be diverted left onto Castro Valley Road (immediately before the closed connector to SB 101).
  2. Continue East on Castro Valley Road
  3. Follow the detour signs along Castro Valley Road, heading east.
  4. Continue past intersections with Mesa Road and Bolsa Road.
  5. Turn Right onto Monterey Road.
  6. At the end of Castro Valley Road, turn right (southbound) onto Monterey Road.
  7. Access Southbound US 101 On-Ramp.
  8. Shortly after entering Monterey Road, follow signs to merge onto the southbound US 101 on-ramp.
Community Impacts

None

Service Impacts

None

Traffic Impacts
  • Nighttime ramp closures are required to complete this work safely.
  • Expect delays and detours in the area during closure hours.
  • Use alternate routes when possible and follow posted signage.
Pedestrian Impacts

None

Bicycle Impacts

None