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Map Layer Info

One Million-Scale Major Roads of the United States

What this map layer shows:

Major roads of the United States, Puerto Rico, and the U.S. Virgin Islands at a scale of 1:1,000,000 as of 2013. It does not include detailed street information.
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Background Information
Sample map Sample Map
A road is an open way for the passage of vehicles. Major roads include Interstate routes, U.S. routes, State routes, and other large roads. The U.S. Geological Survey (USGS) collects information on major roads to support the production of base maps for the United States. The Federal Highway Administration (FHWA) of the U.S. Department of Transportation is responsible for overseeing highways in the United States, which includes promoting safety, providing technical expertise, developing regulations, and providing development and maintenance of Federal roads. Information on the history of major roads in the United States can be found on the FHWA highway history page.

This map layer shows the major roads and ferry crossings in the United States, Puerto Rico, and the U.S. Virgin Islands that can be represented at a map scale of 1:1,000,000 (1 inch on a map at that scale equals about 15.8 miles on the land surface). We also produced a map layer of Major Roads and Ferries in 1999 at a scale of 1:2,000,000. Most local streets and small roads cannot be portrayed at these scales. Descriptive information includes the route number and the road type.

The map layer was produced by the National Atlas of the United States. It is part of our collection of fundamental digital cartographic data known as 1. This collection includes base map data in vector format at 1:1,000,000-scale and in raster format at 100 meter resolution. Read more about the 1. A Global Map edition of this map layer is also available.

In cooperation with national mapping programs in Canada and Mexico, we also produce a map layer of major roads across North America at a scale of 1:10,000,000.


Printable Maps
Reference and Outline Maps of the United States

Data Download
Roads 2013
Roads 1999

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