File:Glendalefreeway.jpg

The Glendale Freeway (Highway 2), as photographed on July 7, 2004 from the transition ramp that connects the eastbound Ventura Freeway (Highway 134) to the northbound Glendale Freeway.

The diamond interchange in the foreground is for Holly Drive/Mt. Carmel Drive. In newer (post-1960s) freeways, where it is necessary to have an interchange with surface streets very close to a freeway-to-freeway interchange, Caltrans will often extend the access ramps for the freeway-to-freeway stack interchange over the street interchange. That is what is going on here. Another well-known example is the Story Road interchange with U.S. Highway 101 in San Jose, which sits under the ramps to and from the interchange with Interstate 280. In such freeway-to-freeway stack interchanges, the ramps for diagonal movements between freeways can easily be more than a mile long (like the one visible here).

Photographed and uploaded by user Coolcaesar