Purchasing Section

How to do business with the Iowa DOT

We invite and encourage all interested businesses, contractors, service providers, individuals and firms to register to do business with the Iowa DOT. This registration is specific to the Iowa DOT and is not the same registration as offered by the Iowa Department of Administrative Services (DAS) or the Iowa Economic Development Authority . Please see Vendor registration in the left hand navigation.

Iowa DOT purchasing section responsibilities

The purchasing section is responsible for the purchase of all equipment, materials, and supplies required by the Iowa DOT to fulfill this mission except highway and bridge construction related services. See http://www.iowadot.gov/contracts

Goods and services

The Iowa DOT’s operations are very diverse and require a broad range of items to serve the public’s transportation needs. The purchasing section annually procures $70 million worth of goods and services for all six agency divisions including the central warehouse in Ames, which stocks more than 6,000 different items for use by agency and political subdivisions.


Goods - Upon award, all Suppliers shall furnish supplies, materials and/or equipment that fully meet the specifications within the requested project period and at the prices offered.

Construction - Contractors of vertical building construction projects must be registered with Iowa Workforce Development. For information on registering call 515-281-5387.

Targeted Small Businesses (TSB) -The Iowa DOT procures over $30 million dollars in goods and services each year. We encourage TSB's to register with Purchasing Section under Vendor Registration in the left hand navigation.

All TSB's must be registered with Iowa Economic Development Authority-Department of Inspection and Appeals. Add link or call 515-281-5796.


The Iowa DOT is exempt from all federal and state taxes. Tax exempt certificates will be supplied upon request.

To check on current solicitation opportunities, see Current Solicitation opportunities in the left hand navigation.

Who to contact

Purchasing agents and assigned responsibilities are listed in the left hand navigation under Purchasing staff.