Construction is set to begin on one of the nation’s largest dam safety projects as the approximately $2.8-billion Anderson Dam Seismic Retrofit Project advances from years of engineering, environmental review and federal permitting into a seven-year reconstruction program. Rebuilding Instead of RetrofittingRather than retrofit the existing structure, the project calls for removing and rebuilding most of Anderson Dam to meet modern federal dam safety requirements. Ask ENR →The Anderson Dam Seismic Retrofit Project begins with a partially dewatered reservoir and the existing embankment, and concludes with a reconstructed dam designed to meet modern seismic standards following phased construction. The more than 1,000-ft-long Anderson Dam Tunnel Project—one of the key precursor projects for the reconstruction—is now in its final stages. Crews remove the tunnel boring machine after it completed the Anderson Dam Tunnel Project's lake tap, creating the underwater connection between the new outlet tunnel and Anderson Reservoir.