In the Archaeological Resources Technical Report Addendum Summary there is this great set of overlays with the footprint of the Preferred Alternative's alignment and two historic maps from right around statehood, one from 1852, the other from 1861.*
|1861 and 1852 survey maps with an SRC and modern overlay|
(if the caption reads left to right, the dates are switched!)
|1852 map with overlay|
|1852 map all by itself|
|1858 Harritt House - via Wikipedia|
|1861 map detail - No McLane Island|
|J.B. McLain - in the Highland neighborhood area (1861 map)|
I don't see any other names that stay with us today, and I don't think the maps really disclose anything important about why the SRC is a good idea or a bad one. Maybe you will see something interesting!
* Here's a good discussion from the University of Washington of the mapping and survey effort. The maps themselves can be downloaded from the University of Oregon here.