The California Department of Transportation (Caltrans) announced closures on the Interstate-5 for a sign-replacement project.

Caltrans officials said weather permitting, the following roads will be closed. These closures are during night hours to minimize traffic delays and provide a safe work zone for construction crews and motorists while working along the I-5.

The following schedule will be in effect, weather permitting, and subject to change:

Tuesday, Dec. 27 through Friday, Dec. 30

Northbound I-5 Freeway Closure

7 p.m. to 5 a.m. – Up to 3 lanes from Ronald Reagan Freeway (SR-118) to Lancaster Road

7 p.m. to 5 a.m. – Lyons Avenue off-ramp, Paxton Street on- and off-ramp

8 p.m. to 5 a.m. – Northbound I-5 connector to eastbound SR-118

Southbound I-5 Freeway Closure

7 p.m. to 5 a.m. – Up to 3 lanes from Quail Lake Road to San Diego Freeway (I-405)

7 p.m. to 5 a.m. – Lake Hughes Road and Lyons Avenue off-ramp

10 p.m. to 4 a.m. – Southbound I-5 truck connector

Statewide Traffic Safety and Signs Inc. is the contractor on this $2.5 million project, which began in June 2016, and is expected to be completed by summer of 2017.

Improvements will bring existing sign structures to current standards and increase operational safety.

Construction signs and changeable message signs will be in place to alert motorists of closures. Motorists should anticipate delays, plan ahead and use alternate routes.

Motorists are advised to “Be Work Zone Alert.”