For travel outside Delaware, many traffic sites are linked from the United States Federal Highway Administration's website.
The Morris Library Maps collection contains 15- and 7.5-minute topographic maps published in the 20th Century for the state of Delaware. Additional printed Delaware maps are included in the Library's Special Collections. Many of the resources listed on other pages of this guide offer access to Delaware maps and spatial data. If you do not find what you need here please Ask a Librarian.
The most current topographic maps of the state are created as PDF files and are available through the USGS website.