The State Letter of Authority (SLOA) is a form that must be issued on all projects whether the work is competitively bid or performed by the local government. Up to three SLOAs may be required by TxDOT and issued during the course of the project:

• Prior to Preliminary Engineering
• Prior to the acquisition of right of way or the accommodation of utilities
• Prior to initiation of advertising for construction

A Federal Project Authorization and Agreement is required in addition to the SLOA for all construction and non-construction projects that include federal funds. It is not required for projects that only include local and state funds.