Test sections by mileposts.
Primary /
Highway Division, Office of Materials, Iowa Department of Transportation.
Description
Viewability
Item Link | Original Source |
---|---|
Limited (search only) 1983 | Northwestern University |
Limited (search only) 1987 | Northwestern University |
Limited (search only) 1989 | Northwestern University |
Limited (search only) 1990 | Northwestern University |
Limited (search only) 1992 | Northwestern University |
Limited (search only) 1995 | Northwestern University |
Limited (search only) 1998 | University of Illinois at Urbana-Champaign |