The I-5 inversion

This blew my mind yesterday. For about 4 miles north of Castaic, California, the lanes of Interstate 5 invert, with northbound traffic on the left-hand side and southbound traffic on the right-hand side, “in order to make the grade manageable for trucks.”

I-5 inversion north of Castaic, CA


That’s cool. Engineering at work!

Oh wow. That’s pretty damn cool. Of all the times I’ve been on I-5, I never new this.


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