Northbound I-5 Full Closure in Carlsbad Monday Night, 4/15


California Interstate 5 icon

District: District 11 — San Diego and Imperial Counties
Contact: Stephen Welborn
Phone: (619) 688-6670



Caltrans and SANDAG Build North Coast Corridor (NCC) highway construction crews will close all northbound lanes along Interstate 5 (I-5) between Carlsbad Village Drive and State Route 78 (SR 78) from Monday, April 15, at 11:30 p.m. to Tuesday, April 16, at 4:30 a.m.

This closure will allow crews to continue with placing an overhead sign structure, spanning all lanes of travel.

All northbound I-5 motorists will exit at Carlsbad Village Drive and follow the detour onto El Camino Real. Motorists can enter northbound I-5 from Vista Way or SR 78. Detour signage will be in place to guide motorists around this closure.

This work will be performed at night under the protection of temporary freeway lane closures for enhanced crewmember protection and the safety of the traveling public. Nearby residents and businesses can expect construction noise and lights during this activity, including Occupational Safety and Health Administration (OSHA) required vehicle back-up alarms. Crews will work to minimize noise and impacts to all nearby communities.  

To ensure safety for both motorists and the construction crews through this work, drivers are reminded to “Drive 55 on the 5” in the Build NCC construction zone and that traffic fines are doubled in construction zones. The SANDAG-operated Motorist Aid service for roadside assistance can be easily accessed by dialing 5-1-1 anywhere in San Diego County. Additionally, the “Move Over” law requires all drivers to move over a lane or, if they are unable to do that safely, slow down when they see amber flashing lights on Caltrans vehicles, law enforcement and emergency vehicles, and tow trucks. 

The maintenance work schedule is subject to change due to weather, traffic incidents, or other maintenance considerations.

For real-time traffic information including traffic speed, lane and road closures due to construction and maintenance activities, and more, go to

For more information about transportation and other infrastructure projects funded with state and federal investments, visit and

To learn more and to sign up for project email updates, visit Text “BuildNCC” to (760) 454-0077 to sign up to receive construction text alerts.   

The $882 million Build NCC package of highway, rail, environmental, and coastal access improvement projects includes $195 from Senate Bill (SB) 1, the Road Repair and Accountability Act of 2017. SB 1 provides $5 billion in transportation funding annually split between the state and local agencies. Road projects progress through construction phases more quickly based on the availability of SB 1 funds, including projects that are partially funded by SB 1. For more information about other transportation projects funded by SB 1, visit

Funding for this project also includes $141 million from TransNet, the voter-approved half-cent sales tax administered by SANDAG to support the Build NCC package of highway, rail, environmental, and coastal access improvement projects. SANDAG leverages these funds with state and federal resources to improve the region’s transportation infrastructure.