California Department of Transportation

09/29/2026 | Press release | Distributed by Public on 09/29/2026 18:03

Southbound I-5 Closed at Via de San Ysidro Evening of October 5

Southbound I-5 Closed at Via de San Ysidro Evening of October 5

Published: Sep 29, 2026

SAN DIEGO - The Caltrans I-5 Asset Management Project team will close all lanes of southbound Interstate 5 (I-5) at the Via de San Ysidro off-ramp on Monday, October 5, from 11 p.m. to 5 a.m. for overhead signage installation. The Willow Road pedestrian bridge will also be closed during this time. Southbound I-5 motorists may exit at the Via de San Ysidro off-ramp, turn left onto Via de San Ysidro, and turn right onto E San Ysidro Blvd. and then use the southbound I-805 on-ramp.

Portable changeable message signs will be placed along the routes to advise of the closure and suggest alternate routes. Businesses and residents near the closure should anticipate construction noise and lighting during the closure.

This $113 million project will ensure that a southern segment of I-5 remains in good repair while improving ride quality and reducing maintenance needs in the cities of San Diego, Chula Vista, and National City, from Camino De La Plaza to 0.3 miles south of Via De La Valle. This important effort is focused on preserving existing infrastructure, improving safety, and modernizing the corridor to meet current and future transportation needs.

The project will rehabilitate pavement along the main roadway, shoulders, and freeway ramps to extend the service life of the existing pavement. Beyond resurfacing, the project incorporates a broad range of upgrades to improve performance, safety, and environmental conservation.

This project is solely funded by the State Highway Operation Protection Program, with $102,618,300 in Federal funds and $11,127,500 in state funds from SB1.

Motorists are reminded to be Work Zone Alert if traveling in the area and to watch for highway workers and moving construction equipment.

The work schedule is subject to change due to weather conditions, traffic incidents, or other work-related reasons.

For real-time traffic information, including traffic speed, lane and road closures due to construction and maintenance activities, and more, go to http://quickmap.dot.ca.gov/

Follow @SDCaltrans on X and like Caltrans District 11 on Facebook at https://www.facebook.com/SDCaltrans for news related to state transportation in San Diego and Imperial counties.

California Department of Transportation published this content on September 29, 2026, and is solely responsible for the information contained herein. Distributed via Public Technologies (PUBT), unedited and unaltered, on September 30, 2026 at 00:03 UTC. If you believe the information included in the content is inaccurate or outdated and requires editing or removal, please contact us at [email protected]