Freeway Fastlane Penny Trader Traditional Cache

If you follow your GPS, you may find yourself wanting to stop in the middle of the Pasadena Freeway. However, please be assured that you do NOT need to do anything unsafe or illegal to get to this cache. You don't need to climb over any fences to get to this cache (though you may be tempted). Though this may be closer than you ever cared to approach a freeway on foot, I think you'll find it more interesting that you would expect.

This cache is a magnetic hide-a-key, and once you get to the right spot, the location should be fairly obvious. The challenge of this cache is just how do you get to that spot? (Remember, do it safely and legally, please!)

Trading rules: Logging a find for this cache also REQUIRES a trade. The cache initially contains five pennies: 1980-D, 1983-D, 1995-D, 2000-D, and 2003-D. You must trade a penny of a different year and/or mint mark than any of the pennies in the cache. Please clearly log on this website what you've traded, so that future finders can know what to expect. (You may want to bring a selection of pennies just to be sure.) Anyone not trading a penny may log a "note", but may not log a "find".

Several hints are given in order of increasing specificity / spoilers.

This cache also serves as a satellite for the Geo-Stationery Cache, so you may wish to read that description before visiting here, to save yourself having to come back again.