dunkalunk
Senior Member
I've further refined the concept to include colour-coded ramps:
I suggest that anyone interested take the .kml into Google Earth to take a look at the elevation profiles of the tunnel and ramps and look at a flythough with 2x elevation exaggeration. The grades of the roadway work quite well with the terrain.
![2ut52j5.jpg](http://i47.tinypic.com/2ut52j5.jpg)
I suggest that anyone interested take the .kml into Google Earth to take a look at the elevation profiles of the tunnel and ramps and look at a flythough with 2x elevation exaggeration. The grades of the roadway work quite well with the terrain.