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Interstate 11 study moves forward with undecided route in Pima County | Government & Politics | tucson.com
Map of US Interstate Highways : r/MapPorn
FHWA - MUTCD - 2003 Edition Revision 1 Figure 2E-11 Long Description
M1-1 Interstate Route Sign (1 or 2 Digits) – Evangeline Specialties
Can you travel the USA without the use of interstate highways? Google Maps has a check box for avoiding highways but it makes you take the biggest roundabout way possible. - Quora
US Road Map: Interstate Highways in the United States - GIS Geography
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American Highways 101: Visual Guide to U.S. Road Sign Designs & Numbering Systems - 99% Invisible
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List of future Interstate Highways - Wikipedia
American Family Migrations & the U.S. Interstate Highway System
Permian Basin leaders make case for new interstate route
1950s brought better highways, but also lower sales, calls for reforms | Automotive News
Interstate Highway System | WTTW Chicago
Interstate 27 expansion one step closer to reality under omnibus bill
Report says USA's aging Interstate highways need complete upgrade and funding overhaul | Traffic Technology Today
