My basic methodology was to import 1:250,000 USGS raster maps from the Indiana Geological Survey and digitized the two routes. I
had previously digitized the Greene County Alternative 3 Route over the 1:24,000 USGS raster maps. I then assumed the most likely connecting route
from Newberry over to the US 67 Alternative 2 route. I then overlaided this onto the the smaller scale maps along with our  test 5.shapefile for
Monroe County. Everything is projected into UTM 16N so it all fits together nicely. I also used the Terre Haute bypass which is New Terrain. So
there is some digitizing spatial extrapolation involved in both routes.

The proposed hybrid route is 4 miles shorter than I-70 an US 41.  For a comparison of performance see the COUNT US! evaluations.

In order to understand this map better, you might want to check our COUNT US! hybrid maps pages.
To see an index of more Enright maps.