Where is Avenue "U"???

Hello Blog Pals ~
As you might remember I received a very unique treasure map a few days ago.  I can only imagine it was sent to me because of my recent interest in archaeology.

After watching clips from Indiana Jones online I decided the best strategy to start my adventure would be to examine the map I received in the mail.

I know it's near the pacific ocean but last time I checked Wikipedia I learned that the Pacific is the longest and largest ocean.  It seems I have some distance to cover.

Everything with this map makes sense except for the Avenue "U" notation.  I wonder if I can find Avenue "U" then I can start looking for my treasure.

The library is closed (does anyone remember those?) but I will try the next best thing, Google.com.  Let's see what happens when I search Avenue "U".  Looks like this one is near a body of water but upon further review it's in New York State.  Ok, this one won't work.

I will try searching Avenue "U" and Pacific Ocean to see what comes up.  I didn't find much except this Yelp.com review of a brewpub.  It seems like a decent restaurant and it's on Avenue "U" in Seaside, Oregon which is a city on the Pacific Ocean.  Could this be the clue I need?  Perhaps it's time for me to gather my supplies and check out this area and if nothing else maybe I can get a chicken sandwich at the pub and it looks dog friendly so Indiana Fox's trusty sidekick Sequoia can come along on this adventure.