Túnel Hernandarias
| Túnel Hernandarias | ||||
|---|---|---|---|---|
 Tunnel exit, illustration from 1970
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| use | Road tunnel | |||
| traffic connection | Ruta Nacional 168 | |||
| place | Santa Fe - Río Paraná - Paraná , Argentina | |||
| length | 2397 m | |||
| vehicles per day | 12,422 | |||
| Number of tubes | a | |||
| construction | ||||
| start of building | 1961 | |||
| completion | 1969 | |||
| business | ||||
| operator | Duck Interprovincial Raúl Uranga - Carlos Sylvestre Begnis | |||
| toll | toll | |||
| location | ||||
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| Coordinates | ||||
| 31 ° 41 ′ 29 ″ S , 60 ° 30 ′ 20 ″ W. | ||||
| 31 ° 42 ′ 46 ″ S , 60 ° 30 ′ 6 ″ W. | ||||
Map with all coordinates: The Túnel Hernandarias , as it is commonly called, officially the Túnel subfluvial Raúl Uranga - Carlos Sylvestre Begnis , is a road tunnel opened in Argentina in 1969 , which passes the Ruta Nacional 168 under the Río Paraná and the cities of Santa Fe in the province of the same name and Paraná in the province of Entre Ríos connects. It was the first fixed crossing of the river in Argentina.
Surname
The tunnel was originally named after Hernando Arias de Saavedra (1561-1634), colloquially shortened to Hernandarias , the first South American-born governor of Buenos Aires . In 2001 the tunnel was given the names of Governors Raúl Uranga and Carlos Sylvestre Begnis , who had signed the agreements to build the tunnel for the provinces of Entre Ríos and Santa Fe.
description
The tunnel consists of a tube with two lanes and an elevated escape route on both sides. The tunnel itself is 2.4 km long plus the two 320 m long access ramps. The distance between the two toll booths is 3720 m. While the eastern portal is on the outskirts of Paraná, Santa Fe on Ruta Nacional 168 is around 20 km from the western portal.
The tube has an inside diameter of 9.8 m. The two-lane carriageway is 7.3 m wide and is flanked by the 0.95 m wide escape routes. The height above the road is 4.4 m.
The tunnel was the only fixed crossing of the Río Paraná in Argentina until 1973, when the Puente General Manuel Belgrano between the provinces of Chaco and Corrientes was opened 600 km further north . 380 km further south, the Complejo Zárate - Brazo Largo was put into operation in 1977 ; the Rosario-Victoria Bridge , only 130 km away , was completed in 2003.
history
In 1911 the need for a bridge between the two provinces was already being discussed. In 1936 a commission was supposed to investigate whether a bridge or a tunnel was preferable. In 1956 a tunnel was put out to tender internationally, but was not pursued any further because the prices were too high. In 1960 it was finally decided to build a tunnel because it had a longer lifespan and lower maintenance costs than a bridge, did not hinder navigation through pillars in the stream and did not cause a dispute about its appearance. Last but not least, higher taxes had to be paid for structures above ground than for underground structures. On June 15, 1960, the two provinces agreed to build the tunnel and to bear the costs equally. After an international invitation to tender , in January 1961 the governors, numerous ministers and senior officials were present, and the only tender received was opened, which consisted of a consortium made up of Hochtief , the Italian company Vianini and the Argentine company SAILAV. The planning prepared by SAILAV and the costs of the project were then checked by the French Société d'Études et d'Équipments and approved in February 1962. The foundation stone was laid shortly afterwards.
For the tunnel, 36 reinforced concrete pipes with a length of 65.45 m and a weight of 4200 t were produced in a dry dock, sealed, then floated into the river, placed in the prepared channel and connected to one another. The finished pipe was loaded with a 4 m high cover made of sand.
The tunnel was officially opened on December 13, 1969.
In 1982, after an unusually high flood, it was found that the cover of the tunnel tube had been partially washed away over a length of 350 m. With the support of the Leichtweiß Institute for Hydraulic Engineering at the Technical University of Braunschweig , a flexible and sufficiently heavy system for loading a sufficiently long section of the tunnel was developed and installed later.
Web links
- Túnel Subfluvial , official website
Individual evidence
- ↑ Un poco de historia ... on the website of the tunnel authority
- ↑ La construcción on the tunnel authority website
- ^ Cubierta protectora on the website of the tunnel authority