Neb. Rev. Stat. § 13-2906

(1) A political subdivision shall prepare a request for letters of interest for design-build proposals and shall prequalify design-builders in accordance with this section. The request for letters of interest shall describe the project in sufficient detail to permit a design-builder to submit a letter of interest. (2) The request for letters of interest shall be (a) published in a newspaper of general circulation within the political subdivision at least thirty days prior to the deadline for receiving letters of interest and (b) sent by first-class mail to any design-builder upon request. (3) Letters of interest shall be reviewed by the political subdivision in consultation with the performance-criteria developer. The political subdivision shall select prospective design-builders in accordance with the procedures and standards adopted by the political subdivision pursuant to section 13-2905 . The political subdivision shall select at least three prospective design-builders, except that if only two design-builders have submitted letters of interest, the political subdivision shall select at least two prospective design-builders. The selected design-builders shall then be considered prequalified and eligible to receive requests for proposals.