Standard Road Plans

Updated for the April 2014 letting. For files prior to this letting, refer to the Electronic Reference Library (ERL)

The standard road plans contained in this manual (commonly referred to as the "Red Book") have been developed to show standardized design features, construction methods and approved materials to be used in design plans for interstate, primary and secondary road construction in the state of Iowa. These standard road plans are not intended to provide solutions to design problems. Where specific design problems require special solutions, the standard road plans may be modified. Refer to Section 1E-5 of the Design Manual for guidelines for modifying Standard Road Plans.


Standard Road Plan Items English
Entire book (caution — large file!) E-Book
Index Sheets E-Index

Standard Road Plan Items October update April update
Revision packet October April

  Book Sections
BA Barriers
EC Erosion Control
EW Earthwork
MI Miscellaneous
PM Pavement Markings
PV Pavement
RF Drainage
RK Bridge Approach Pavement
RM Signals and Lighting
RR Pavement Rehabilitation
SI Signs
SW Sanitary and Storm Sewer
TC Traffic Control
WM Water Main