📋 Tender Overview
IP and IP Heritage mark the date disclosing content of two ventures that will make two national monuments the Arrabida Bridge and the more resistant Luiz I bridge.
International Day of Monuments and Sites (DIMS) was created by the International Council of Monuments and Sites (International Council of Monuments and Sites - ICOMOS) on April 18 1982 and approved by UNESCO with the objective of sensitizing citizens for the diversity and vulnerability of heritage as well as the need for their protection and appreciation. Celebrated annually on April 18 also praises international solidarity around knowledge safeguarding and valorization of heritage worldwide.
The Cultural Heritage Entity I.P. Since 2024 it is the entity responsible for the national coordination of this ephemeris continuing the work developed by the extinct Directorate General of Cultural Heritage.
IP and IP Heritage are associated with the celebrations which this year intend to portray the resilient heritage compared to catastrophes and conflicts publicizing content from two endeavors that will surely make two national monuments Arrabida Bridge and Luiz I bridge more resistant in case of catastrophe or conflict. The first work will be developed at Ponte da Arrabida later this year and the second contract was executed at the Luiz I Bridge in 2023.
Arrabida Bridge
Intervention
Located in A1 the Arrabida Bridge crosses the Douro River making the road connection on the banks of the cities of Porto and Vila Nova de Gaia. This work of art inaugurated in 1963 will be the object of a rehabilitation contract of the lower face of the board and the pillars in view of the repair of structural degradations resulting from pathologies detected and will be the target of integral painting. In addition the work of reformulation of your road lighting network has just been completed now with the placement of LEDs.
The intervention will be developed at night using a by Bridge platform which will require the implementation of conditioning on road circulation.
On the lower face of the tray and pillars of the bridge the work aims to repair located in the areas where concrete anomalies were identified caused by erosion and include an intervention at the ends of the pillars on the arches. Additionally the intervention includes preventive protection work on the bridge concrete surfaces replacement of the dilation joints and placement of safety guards
According to the latest available data from the Institute of Mobility and Transport in 2023 circulated on average by 112000 cars on the Arrabida Bridge.
Character
The bridge has 493.2m in length between dating tests and a total length of 614.4m and a 26.5m tray wide in Armada-over-bent lag. The armed concrete arc was considered in the time of its construction the largest arc of any bridge in the world with 270m. It has an arrow of 52m and thickness in the births and in the closing of 4.5m and 3.0m respectively. Each arc consists of two coffin ribs 8.0m from width interconnected by an elegant losangular replacement at the level of each banzo.
In the construction the arc was performed with reuse of the Cimbre. For the bridge Cimbre execution was used by consoles in excessive advances with progressive throwing a technique currently used for the construction of modern concrete bridges.
The outer pillars of each arc constitute elevator towers. With a relevant aesthetic treatment these towers rise above the board quota.
History
Since the 1930s of the last century it was the need to create an alternative connection to the Luiz I bridge since the growing flow of road circulation needed a response.
The sudden demographic expansion in the Porto district caused a significant increase in motor vehicle acquisitions so it became urgent construction of an alternative crossing.
Thus in March 1952 the Autonomous Road Board (J.A.E.) awarded the elaboration of the drafts to a world -renowned bridge engineer Professor Edgar Antonio de Mesquita Cardoso who had the collaboration of architect Inacio Peres Fernandes and the engineers Jose Francisco de Azevedo e Silva responsible for the study of the lighting and Joseph of Canto Moniz responsible for the study of the pavement of the track. tread. The project would be approved in 1955.
The construction was in charge of the company based in Aveiro Eng. Jose Pereira Zagalo. The work cost about 240000 tales. In March 1957 it began where 20 thousand tons of cement 58700m3 of armed concrete 2250 tons of steel in rods and 2200 tons of laminated steel were applied in the cimbre used. The company set up an exclusive office for the work in Beira-Rio (today a restaurante) and went bankrupt in the early 80s of the twentieth century.
The board consisted of two 8 m traffic roads separated by a 2 m wide overlapped road two 1.70 m cyclists clues two 1.50 m wide overwhelming rides.
The inauguration took place on June 22 1963 in the mandate of Nuno Pinheiro Torres in the Porto City Council (judge and politician who was at the head of that autarchy between 1962 and 1969).
The work of art included as an integral part of the 4 elevators structure so that the pedestrians could overcome the distance of 70 meters from the board to the river which brought great benefits to the pedestrian crossing.
In the elevators towers four five -meter -high ornamental sculptures are fused into bronze. Two on the side of the port full of symbolism the joint authorship of the cheap sculptor Feyo with the also sculptor Gustavo Bastos nicknamed the cozy genius of the city of Porto and the genius of river faine and hydroelectric utilization. On the side of Gaia two others also by sculptor Gustavo Bastos representing the dominance of waters by man and the man in his possibility of crossing water courses. In the 1990s the elevators stopped working.
The Arrabida Bridge the size of its armed concrete arc and for the aesthetic quality and integration in the urban space is one of the most striking public works of the 19th cen
