Made some adjustments to both I-5 and I-405.
Originally, +x59 was where I-5 made its turn from the Baldock Freeway alignment and onto the thrust of the Marquam Bridge. I moved the point down and slightly to the east of I-405-1A (the Harbor Dr exit between I-405's merge with I-5 and where it swings onto the downtown loop) to break any concurrency on I-405's southern tailend. I then changed I-405's +x1 (at the downtown loop transition point) to 1, and moved I-5's 299B from where the ramps merge on the bridge itself to match with I-405-1, facilitating mapping of the downtown loop if neither the southern end of I-405 nor the Baldock Freeway portion of I-5 were clinched.
