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Investment project does not have seismic study and presents technical inconsistenciesArequipa.- The Comptroller General of the Republic warned of the Provincial Municipality of Arequipa (MPA) for deficiencies in the technical file of the Ernesto Gunnter vehicular and pedestrian bridge that would delay its execution, increase its cost and reduce its useful life.
On July 31, 2025, the MPA signed the contract for the improvement work of the urban mobility service of the aforementioned bridge, located in the Jacobo Hunter district, province and Arequipa region, with a budget of S/ 2 181 417 and a contractual execution period of 60 calendar days. The aforementioned project has the purpose of improving the existing infrastructure of the viaduct partially collapsed as a result of the registered rains and entry of murky waters in February 2025.
In the Control Milestone Report No. 035-2025-OCI/0353-SCC, which evaluated the period from June 16 to August 7, 2025, it is revealed that the technical file of the investment project did not consider or attach the study or seismic risk of the bridge structures and retaining walls, despite being an infrastructure for public use.
In this regard, there is the normative obligation to include the aforementioned basic study for the elaboration of preliminary projects and projects that have as its contract the construction of bridges, as established in the National Regulations of Buildings (RNE) and the bridge manual of the Ministry of Transport and Communications (MTC) that will guarantee the functionality of the viaducts after moderate or extraordinary earthquakes.
In addition, inconsistencies between the document detailing the calculations and considerations made for the design and plans of structures of the technical file, related to the quantity and distribution of reinforcement steel in the retaining walls, which would generate affectation to the validity of the structural design and require modifications and greater expenses.
Another warned risk reveals technical inconsistencies in the estimation of the depths of undercut (erosion process that occurs in the channel) of the bases and stirrups of the viaduct, which have been diminished without technical support, which would affect an adequate structural behavior and useful life.
The report also alerts the probable start of works without the authorization of the National Water Authority (ANA), a situation that could affect the period of execution of the work by generating probable paralyzes or time extensions, and with it the payment of greater general expenses, as well as the imposition of pecuniary sanctions by the competent authority.
The MPA, only on July 30, 2025, asked the ANA to authorize the execution of works in the goods associated with water and in the sectorial hydraulic infrastructure of the Ernesto Gunnter Bridge project. Therefore, until the issuance of the Control Report (August 8, 2025) there was no corresponding permit.
The report prepared by the Institutional Control Body (OCI) of the MPA was communicated to the provincial mayor with the objective of the corresponding preventive and corrective actions. It is also available in the Institutional Portal of the Comptroller (www.gob.pe/contraloria).
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Arequipa, August 20, 2025
Corporate Communication Management
Press NOTE N deg 696 - 2025 - CG/GCOC
