Exhibit 8.01

Subsidiaries of the Registrant



|                                    |  |                               |  |                                               |  |                                                          
|----------------------------------- |  | ----------------------------- |  | --------------------------------------------- |  | ---------------------------------------------------------
|Subsidiary                          |  | Jurisdiction of
Incorporation |  | Name Under Which the
Subsidiary Does Business |  | Ownership Interest                                       
|                                    |  |                               | 
|Viva GyM S.A.                       |  | Peru                          |  | Viva GyM                                      |  | Graña y Montero owns
60.6%; GyM owns 39.0%               
|                                    |  |                               | 
|GyM S.A.                            |  | Peru                          |  | GyM                                           |  | Graña y Montero owns 98.2%                               
|                                    |  |                               | 
|Concesionaria La Chira S.A.         |  | Peru                          |  | La Chira                                      |  | Graña y Montero owns 50.0%                               
|                                    |  |                               | 
|Concesión Canchaque S.A.            |  | Peru                          |  | Canchaque                                     |  | Graña y Montero owns 99.9%                               
|                                    |  |                               | 
|Concar S.A.                         |  | Peru                          |  | Concar                                        |  | Graña y Montero owns 99.7%                               
|                                    |  |                               | 
|GMP S.A.                            |  | Peru                          |  | GMP                                           |  | Graña y Montero owns 95.0%                               
|                                    |  |                               | 
|GMD S.A.                            |  | Peru                          |  | GMD                                           |  | Graña y Montero owns 89.2%                               
|                                    |  |                               | 
|GyM Ferrovías S.A.                  |  | Peru                          |  | GyM Ferrovías                                 |  | Graña y Montero owns 75.0%                               
|                                    |  |                               | 
|Norvial S.A.                        |  | Peru                          |  | Norvial                                       |  | Graña y Montero owns 67.0%                               
|                                    |  |                               | 
|CAM Chile S.A.                      |  | Chile                         |  | Cam                                           |  | Graña y Montero owns 75.0%                               
|                                    |  |                               | 
|Survial S.A.                        |  | Peru                          |  | Survial                                       |  | Graña y Montero owns 99.9%                               
|                                    |  |                               | 
|GMI S.A.                            |  | Peru                          |  | GMI                                           |  | Graña y Montero owns 89.4%                               
|                                    |  |                               | 
|Stracon GyM S.A.                    |  | Peru                          |  | Stracon GyM                                   |  | GyM owns 87.6%                                           
|Vial y Vives - DSD S.A.             |  | Chile                         |  | Vial y Vives                                  |  | GyM owns 82.0%                                           
|Inmobiliaria Almonte S.A.C.         |  | Peru                          |  | Almonte                                       |  | Viva GyM owns 50.4%                                      
|                                    |  |                               | 
|Morelco S.A.                        |  | Colombia                      |  | Morelco                                       |  | Graña y Montero owns 70.0%                               
|                                    |  |                               | 
|Concesionaria Via Expresa Sur, S.A. |  | Peru                          |  | VESUR                                         |  | Graña y Montero owns
99.98%; GyM owns the remaining
0.02%