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I-5 Construction Updates

The construction for the Magic Mountain Parkway / I-5 interchange improvements is progressing on schedule.  The general contractor, Security Paving Construction, is continuing the construction of the rectangular shaped storm drain box, which is located west of The Old Road.  To date, 1250 feet of the box culvert has been completed. The completion of the entire storm drain box and the outlet structure is expected fall 2007.

Construction has been completed for the retaining walls along the southbound I-5 on ramp at Magic Mountain Parkway.  The widening of the ramp is currently taking place.  Construction of the retaining walls for the southbound off ramp is on-going with an expected completion of March 2007.  

Valencia Water and Castaic Lake Water Agency will begin construction of installation of new water lines on Magic Mountain Parkway west of The Old Road.   The anticipated start date is early February 2007.  AT&T is continuing underground utility work unrelated to this project.  They will be closing some of the existing lanes for westbound Magic Mountain Parkway between Tourney Road and The Old Road.  The work will entail three phases, which began early December 2006.

There are a total of 11 phases for these improvements.  Currently, we are on Phase 2 of the construction and this phase alone will take approximately 12 to 15 months to complete.  During this phase, existing ramps, at least one lane, and local roadways (Magic Mountain Parkway and The Old Road) will be open for vehicular traffic.

Please check the City of Santa Clarita's website at or the project hotline (661) 290-2297, for any extended major lane closures, detours, or news associated with this project.

I-5 Construction Updates

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