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Home » Santa Clarita News » Update On Magic Mountain I-5 Improvements

Update On Magic Mountain I-5 Improvements

Storm drain box is 90% complete, while new conduit lines and retaining wall contruction will begin soon.    


The contractor, Security Paving Construction, has begun working on the outlet structure that connects to the storm drain box that leads into the Santa Clara River.  The City's on-site biologist, Entrix, is monitoring the construction activities on a daily basis. All necessary permitting has been secured from the various environmental agencies.


The construction of the storm drain box is over 90 percent complete. Construction is continuing underneath Magic Mountain Parkway west of The Old Road. Please allow extra time when traveling through the area during peak park hours.  It is anticipated that construction of the box culvert will last another six to eight weeks.


AT&T has begun the installation of new conduit lines between Tourney Road and the
southbound I-5 off-ramp.  The work is anticipated to be complete the end of August


In preparation for constructing retaining walls along the northbound I-5 off-ramp at Magic Mountain Parkway east to Tourney Road, clearing and grubbing will take place towards the end of July 2007.


Currently, we are working on Phase 2 of the 11 phases for these improvements.  The
anticipated completion of this phase is fall 2007. This phase includes constructing portions of freeway on-ramps and off-ramps, the majority of the drainage box, and retaining walls. During this phase, existing ramps 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.

Update On Magic Mountain I-5 Improvements

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