Design

ROAD DESIGN DETAILS

Updated for the October 2024 letting.

Road design details aid designers in the development of detailed design plans for interstate and primary road construction in the State of Iowa. These details are not intended to cover all design situations. Typical sections and design forms may be modified for design situations requiring unique solutions. Section 1E-4 of the Design Manual provides guidance for modifying road design details.

Road Design Details Items English
Version
Index Sheets E-Index
Recently published E-Recent
Typical Components Index Excel Icon
Renumbered Standard Road Plans and Design Details PDF file

Road Design Details Items October update April update
Revision letter October April

  Book Sections
100s Design and Tabulation Forms
200s Standard Notations
500s Design Detail Sheets
  Typical Components
2000s Roadway Typical Sections and Drawings
4000s Roadway Ditches
6000s Curbs
7000s Paving and Reconstruction
8000s Median Crossings, Guardrail, Barriers and Earthwork
9000s Pavement Markings

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