Information Sources

Format, Organization, Colors and Symbols

Stripchart page format, orgainization, color choice and symbols were used from Chris Marshall's British Motorway Database (http://www.cbrd.co.uk/mwaydata.shtml). If you find yourself planning a trip to the UK, please give his site a visit for motorway and surface highway information.

Aerial Photos and Topographic Maps

The MSN Terraserver service provided the photos used to make most of the interchange diagrams. MSN provides the photo tile database infrastructure. The USGS provides the actual photo tiles. More recent changes in interchange configuration are seen through www.globexplorer.com.

Roadway-Specific Information

Route Logs and Road Inventories from state Department of Transportation (or equivilent agency) web sites for the following states:
Maine, Oregon, Washington

Overview Maps

The Bureau of Transportation Statistics (a part of USDOT) modified by myself to highlight the described highway.

Exit List, Numbering and Sequencing

The Rand McNally Road Atlas, editions 2002, 2003
The Thomas Guide, Pacific Northwest Road Atlas and Driver's Guide
The DeLorme Atlas and Gazetteer for each state.
Exit list websites:

{List Finder} Highway Heaven, http://www.ajfroggie.com/triskele
{ME, NH} Shady Jay's New England Turnpikes 2003, http://neturnpikes.tripod.com/exit.htm
{OR} Mike Wiley's Oregon Freeways, http://www.ylekot.com/orehwys
{OR, WA} http://highway5.com (dead link)
{WA} The Yamamoto Experience, http://mr_yamamoto.50megs.com
{WA} Dan Moraseski's Freeway Exit Lists, http://web.mit.edu/spui/www/freeway/index.html

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Contact Information

Corrections and suggestions may be submitted here.

url: http://home.teleport.com/~andytom/Highways/sources.html
last revision: 4 JUL 2003