The US Interstate Highway Strip Chart Project
The US Interstate Highway Strip Chart Project goes beyond the standard exit list by providing information for each exit beyond what is printed on the posted guide signs. Primary of this is a diagram of each interchange and a lane depiction. See the help page for further details.
This site has recently undergone a conversion.
If you have any old saved or bookmarked URL's for individual stripchart pages from before 2006, you should replace them with the current ones. URL's for this page, the index pages and the update list shall remain the same.
Navigation
Strip charts for individual 2 (or 1) digit interstate highways (2di's) are broken up by state to shorten the script files. In some cases (such as I-5 in California or I-10 in Texas), the strip chart file may be broken into more pieces. In other cases, strip charts for a highway in two neighboring states where the section in one state is short may be combined into one (for example I-15 in Arizona, a 30 mile piece with 2 or 3 exits, will be combined with I-15 in Nevada, a 125 mile piece with 25 or 30 exits). You may locate a strip chart either by going to the state first and choosing a highway that passes through the state, or by going to the highway first and choosing a state through which the highway passes.
Strip charts for 3 digit interstate highways (3di's) are not broken up by state. On state search pages, all 3di's in the state will appear grouped with their base 2di if it goes through the state. If the base highway does not pass through the state, the 3di will appear alone in the list. On highway search pages, all 3di's for which the chosen highway is a base will appear.
- Get strip chart by state then highway
- Get strip chart by highway then state
- How to read a strip chart page
- Known and Reported Errors
- Open Questions List
- Update list
- Sources
Browser Requirements
The strip chart pages are written in an XML-based language (not XHTML) that requires an XSLT translation, then the application of a CSS stylesheet before display. I will be looking at doing the XSLT translation on the server-side. Until I get that working, the browser must be able to do the XSLT translation. At this time, the strip chart page translations can only be done with Internet Explorer. Check here to see if you need to download a current XML parser.
NOTE: It may take as much as a minute (particularly with the cross-state strip charts) before you get any response from your browser with dial-up internet connections as the entire source file and the XSLT translator style sheet must download and the translation must occur before any rendering can be done. At that time the base structure is displayed with the figures filling in as they arrive.
The Fine Print
1) Much of the stripchart page format, organization and color choice is similar to and was taken from examples of Chris Marshall's British Motorway Database (http://www.cbrd.co.uk/motorway). I also used many of the symbols and symbol files that he uses in his website including the directional arrows, lane depictions, airports, etc. These should be considered Chris's work. My work is the gathering of the content, the drawing of the interchange figures, some added functionality (freeway-to-freeway connection links, links to terraserver photos, combination exit descriptions) and converting the whole thing to XML/XSLT. If you find yourself planning a trip to the UK, please give his site a visit for motorway and surface highway information.
2) This site is not affiliated with or endorsed by any federal, state or local government agency. I do use information from government agencies (usually through their websites) to maintain the accuracy of the content of this website.
3) This site is a hobby for me. As such, the accuracy of the information presented is NOT guaranteed. I make every attempt to ensure that the content presented is accurate but I accept no resposibility for problems created through the use of the content on this site.
Contact Information
The accuracy of these pages depends on the accuracy of the information that I can find for each page and information provided by you concerning correction of errors and updates. Corrections and suggestions may be submitted here url: http://home.comcast.net/~andytom/Highways/index.htmllast revision: 13 FEB 2006
