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2023 Infrastructure Design Manual

The 2023 edition of the Infrastructure Design Manual (IDM) will go into effect on November 27, 2023

 

Last updated: November 21, 2023

00911 Notice Of Addendum
Solicitud para la ocupacion, inspeccion de acatamiento (CE1045s)

Solicitud para la ocupacion, inspeccion de acatamiento (occupancy application in Spanish)

Last updated: January 2025

02082-07 Corrosion Resistant Manhole for Force Main Discharge

02082-07 Corrosion Resistant Manhole for Force Main Discharge

02083N-01 4'-0 Diameter Fiberglass Manhole Notes
14-03-R Single Family Residential Driveways Interlocking Concrete Permeable Paver and Flexible Plastic Grid Paver Systems

The following drawing is an example of typical construction and can be used as a reference.

NOTE: This is not an engineered drawing.  

02754-01B to 02754-02

02754-01B Driveway Detail with 6” Curbed Streets

02754-02 Driveways with Culverts or Valley Gutters on Open Ditch Type Streets

24-02-R Examples of Required Plans (Residential Information Package-2)

Revised 03/25/2024

Impervious Area Calculations

Analysis of Impervious Cover

Updated 2023

Mobility Permitting Frequently Asked Questions

Frequently asked questions about mobility permitting (lane closure permitting). Updated 01/01/2019