A map of the affected project area.

A map of the affected project area. (Caltrans / October 25, 2012)

The Olive Avenue off-ramp for the northbound 5 Freeway in Burbank will be closed for 55 hours starting Oct. 29 as part of a project to add carpool lanes in both directions.

The $153-million project to add carpool lanes between the 134 Freeway and Magnolia Boulevard has been well under way now for months, and is expected to be completed by mid-2014, according to the California Department of Transportation.

In addition to building a retaining wall on the northbound I-5 between Verdugo Avenue and Angelino Avenue, Caltrans is in the process of widening the northbound Olive Avenue off-ramp.

In order for crews to build a new temporary off-ramp, the existing northbound I-5 Olive Avenue off-ramp will be closed to traffic at 7 p.m. Oct. 29 through 2 a.m. Nov. 1, according to Caltrans.

For more information on the slew of I-5 corridor construction projects, and a list of upcoming ramp closures, visit the Caltrans website.

--Jason Wells, Times Community News

Follow Jason Wells on Google+ and on Twitter: @JasonBretWells