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Student Affairs  /  Campus Announcements  /  Upcoming Road Closure on Holliston Avenue

Upcoming Road Closure on Holliston Avenue

August 14, 2026

To accommodate upgrades to Caltech's electrical infrastructure, portions of Holliston Avenue will be closed to vehicle traffic beginning Monday, August 17. The Holliston Parking Structure will remain open throughout construction, but road closures will limit access routes. The work will occur from 7 a.m. to 4:30 p.m. on weekdays and in phases as follows:

Phase 1: From Monday, August 17, through Friday, August 28, vehicles will not be able to access the Holliston Parking Structure from Del Mar Boulevard. During this time, the Holliston Parking Structure will be accessible from the south via San Pasqual Street. See below for a map of the detour path during Phase 1. 

Map 1

Phase 2: From Monday, August 31, through Friday, September 4, vehicles will not be able to access the Holliston Parking Structure from San Pasqual Street. During this time, the Holliston Parking Structure will be accessible from the north via Del Mar Boulevard. See below for a map of the detour path during Phase 2.

Map 2

If you have questions about this period of road closure, call (626) 395-4717 or email [email protected]