This document is an Addendum 14 to the Request for Proposal (RFP) for the Fermilab LBNF NSCF Construction - Beamline Complex project. The RFP seeks one subcontractor to perform construction services, including all labor, materials, and equipment, for the Beamline Complex at the Fermi National Accelerator Laboratory. The work scope includes buildings, enclosures, and site infrastructure to support the LBNF Beamline. The RFP has a mandatory pre-proposal conference on July 11, 2024, and proposals are due by August 15, 2024. FRA reserves the right to reject any proposals and will not reimburse firms for preparation costs. The anticipated award date is 8 months from the proposal due date. The RFP is being issued by the Department of Energy's Fermi National Accelerator Laboratory.