Code of Alabama
Chapter 5 - Actions or Proceedings Upon Public Works or Improvements Contracts Improperly Let or Executed.
Section 39-5-6 - Provisions of Title Mandatory; Construction and Application of Title.

The provisions of this title are mandatory, and shall be construed to require strict competitive bidding on contracts for public works. The courts shall not invoke or apply any principle of quantum meruit, estoppel, or any other legal or equitable principle which would allow recovery for work and labor done or materials furnished under any contract let in violation of competitive bidding requirements as prescribed by law.