Indiana Code Title 5. State and Local Administration § 5-30-1-12

Sec. 12. (a) “Public project” means the process of designing, constructing, reconstructing, altering, or renovating a public building, an airport facility, a sewer, a drain, or another structure or improvement that is paid for out of:

(b) The term includes either of the following:

(c) The term does not include the process of designing, constructing, altering, or repairing a public highway (as defined in IC 9-25-2-4).