Public Improvement Construction Bid/Quote Thresholds to Increase


The competitive bid and quote thresholds for horizontal and vertical infrastructure will increase on January 1, 2023, as announced by the Iowa Department of Transportation (IDOT). For horizontal infrastructure, the threshold will increase to $65,000 for cities less than 50,000 in population (currently $54,000) and to $93,000 for cities over 50,000 in population (currently $77,000).

Vertical infrastructure projects will see an increase to the competitive bid threshold to $196,000 for all cities (currently $139,000), while the lower competitive quotation threshold will increase to $81,000 for cities less than 50,000 in population (currently $57,000) and $109,000 for cities over 50,000 in population (currently $77,000).


The competitive bid and quote thresholds pertain to public improvement projects as defined under Chapter 26 of the state code. The definition of horizontal infrastructure includes roads, bridges and culverts while vertical infrastructure generally includes buildings, facilities, utilities, recreational trails and more. For public improvement projects with estimated costs less than the bid/quote thresholds, cities are allowed to use their own policies to determine how to obtain competitive pricing.

Additional information on bids and quotes, including definitions of horizontal and vertical infrastructure as well as guidance on bid/quote notification requirements, can be seen on our Construction Bidding Procedures page.




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