Fairmount Avenue in San Diego

[TheStranger]

After looking at one of the early-70s maps posted in the Eastgate Mall/Miramar Road thread, I noticed  a short freeway segment of Fairmount Avenue southwest from the I-15/I-8 junction to Meade Avenue:

http://maps.google.com/maps?saddr=Fairmount+Ave&daddr=Unknown+road&hl=en&sll=32.773708,-117.098765&sspn=0.024032,0.035319&geocode=FbXV8wEdyy4F-Q%3BFS4n9AEdljEF-Q&t=h&mra=dme&mrsp=1&sz=15&z=15

Freeway was built sometime between 1953 and 1964, I suspect as part of the upgrades for what was then US 80 (now I-8) in the area:
http://www.historicaerials.com/aerials.php?scale=8E-06&lat=32.7765815021845&lon=-117.100697887051&year=1964
http://www.historicaerials.com/aerials.php?scale=8E-06&lat=32.7722698486864&lon=-117.096889887051&year=1964
http://www.historicaerials.com/aerials.php?scale=8E-06&lat=32.761829525466&lon=-117.097361887051&year=1964

Alignment doesn't look all that changed since then, except for upgrades at the junction with I-8 to tie it into the I-15 junction (originally an entirely separate cloverleaf)  sometime between 1972 and 1980, presumably when 8/15 gained flyover ramps.
http://www.historicaerials.com/aerials.php?scale=9.01708968255272E-06&lat=32.7793442675818&lon=-117.105892451517&year=1980

Anyone know more about this road?  If constructed as part of the US 80 freeway, I wonder if the road ever fell under Caltrans jurisdiction.

[JustDrive]

Fairmount Avenue was an old alignment of US 395, where it joined with the old Murphy Canyon alignment at what is now Qualcomm Stadium.

[TheStranger]

Fairmount Avenue was an old alignment of US 395, where it joined with the old Murphy Canyon alignment at what is now Qualcomm Stadium.

Shown here on this 1940 map of San Diego:
http://www.americanroads.us/citymaps/SanDiegoCA1940HMG.png

(This map also distinctively shows US 80 along what would later be Route 209 along Rosecrans.)

Its status as the original US 395 alignment probably explains why the right of way was available for upgrade, with very few cross streets, in the early 1960s - though this would be one of the rare cases of a road being upgraded to freeway AFTER it had been bypassed by a numbered route (as 395 was already shifted to the Cabrillo Freeway by then!).

The 1964 aerial does show curves were straightened in the freeway upgrade so I don't know how much pavement or right-of-way on the limited-access Fairmount dates back to the US 395 era, if at all.