Project Description
The Page Mill / I-280 Interchange in Los Altos Hills, California, provides a significant route of egress/ingress for the northern portion of the Los Altos Hills Community in the event of a fire. To secure the integrity of these egress/ingress routes and freeway access, Los Altos Hills County Fire District, City of Palo Alto, Palo Alto Fire Department, Santa Clara County Fire Department, and Santa Clara County FireSafe Council propose a roadside treatment of hazardous fuels.

Project Updates

  • The project is scheduled to start February 17, 2026.
  • Residents and commuters will start seeing Changeable Message Signs (CMS) starting the week of February 2nd.
  • There will be entrance and exit ramp detours from Tuesday, February 17th through Friday, February 20th, between 10:00 AM and 2:00 PM.

Media Release – January 28, 2026 – Page Mill Road I-280 Interchange Project

Project Scope
This project will treat the Page Mill / I-280 Interchange which consists of four outer ramps and two inner loop ramps. There will be entrance and exit ramp detours 10:00 AM – 2:00 PM, February 17-20.
The following treatment areas have been separated by jurisdiction between LAHCFD and the City of Palo Alto.

The LAHCFD Jurisdiction:
These portions of the project will treat both sides of the following,

  • The South Bound Page Mill Road to North Bound I-280 ramp, approximately 0.3 linear miles
  • The South Bound I-280 to Page Mill Road ramp including the left turn lane to North Bound Page Mill Road, approximately 0.5 linear miles
  • The on ramp to North Bound I-280 from the inner loop ramp, approximately 0.2 linear miles
  • The South Bound Page Mill Road to South Bound I-280 inner loop ramp, approximately 0.2 linear miles
  • The western side and center median of South Bound Page Mill Road, approximately 0.3 linear miles
  • The southern ends of North Bound Page Mill Road and part of the ramp onto Arastradero Road from North Bound Page Mill Road, approximately 0.1 linear miles
  • The southern side of the eastern end of the North Bound Page Mill Road to South Bound I-280 ramp, approximately 0.1 linear miles

Total treatment in LAHCFD jurisdiction: approximately 19 acres

The City of Palo Alto Jurisdiction:
These portions of the project will treat both sides of the following,

  • The North Bound I-280 to Page Mill Road ramp including the left turn lane to South Bound Page Mill Road, approximately 0.4 linear miles
  • The North Bound Page Mill Road to North Bound I-280 inner loop ramp, approximately 0.2 linear miles
  • The North Bound Page Mill Road to South Bound I-280 ramp, approximately 0.2 linear miles
  • The on ramp to South Bound I-280 from the inner loop ramp, approximately 0.3 linear miles
  • Part of the ramp onto Arastradero Road from North Bound Page Mill Road and from the South Bound I-280 off ramp, approximately 0.1 linear miles
  • The eastern side of most of North Bound Page Mill Road, approximately 0.3 linear miles

Total treatment in Palo Alto jurisdiction: approximately 16 acres

Total Project Treated Miles: 5.86