New construction on the 5 freeway in Santa Clarita is expected to hinder traffic heading south into the San Fernando Valley Monday night and Tuesday morning.

The construction will start Monday night, on Dec. 11, and is expected to be completed by 5 a.m. Tuesday. The California Department of Transportation (Caltrans) will create new temporary lanes on the southbound side of Interstate 5, where a $171 million repaving project is underway.

Drivers are urged to allow extra travel time and be aware of the new lane pattern on a segment of the southbound I-5 between Calgrove Boulevard and SR-14.

The schedule is weather-permitting and is subject to change. Signs will be posted alerting drivers to the new lanes.

The new traffic pattern provides four southbound lanes, with two lanes on each side of a work area in the center of the southbound side of I-5. The work area will be protected by concrete barriers commonly known as K-rails. The split lanes will run for less than a mile.

At the split lanes, the California Highway Patrol will enforce a 50 MPH speed limit. A 55 MPH speed limit is in effect in other areas of the pavement project.

The Caltrans I-5 Roadway Rehabilitation Project is removing broken concrete slabs and constructing new concrete pavement on nearly 16 miles of the 5 freeway in Santa Clarita between the 14 and Lake Hughes Road. Construction is scheduled for completion in the summer of 2019.

Most of the work is done at night, requiring some I-5 lanes to be closed between 9 p.m. and 5 a.m.

Guy F. Atkinson Construction is the contractor on the project, which is being built with state and federal funding. Information about the project is available here and on Twitter.

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