CTRE is an Iowa State University center, administered by the Institute for Transportation.

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Website: www.ctre.iastate.edu/

Iowa State University--Becoming the Best

NCHRP Indefinite Delivery/Indefinite Quantity Contracting Practices


Principal investigators:

Project status


Start date: 10/08/13
End date: 04/29/15


Report: NCHRP Synthesis 473 Indefinite Delivery/Indefinite Quantity Contracting Practices (NA pdf) April 2016


Sponsor(s): National Cooperative Highway Research Program (NCHRP)

About the research


This synthesis examines practices related to the use of indefinite delivery/indefinite quantity (IDIQ) contracting by transportation agencies for highway design, construction, and maintenance contracts. The synthesis covers multiple aspects of IDIQ practice, including contracting techniques, terminology used by transportation agencies, contract advertising and award practices, successful contracting procedures, pricing methods, risk management issues, and effective contract administration practices.