| Work Detail |
This document corresponds to the final report of the executive project of the Bridge
located on Provincial Route N°149 over the Santa María River in the Section: Emp. National Route
40 – Las Mojarras – Emp. Provincial Route N°149 – El Sitio, in the Province of
Catamarca and its accesses.
The project was developed under the premise of strengthening the current road layout, with the objective of
improving the infrastructure of the area and facilitating its commercial development,
characterized by important commercial activity and a growing demand for
tourist activity. Its design will be governed by national regulations.
Santa María is the capital city of the homonymous department, it is located in the
eastern center of the province of Catamarca, 332 km from the provincial capital San Fernando del Valle;
the Santa María River; It divides the urban center in two, on the right bank the towns of
Caspichango, Las Mojarras, El Cerrito, Lampacito, Chañarpunco unit by Ruta Nac 40
and on the left bank Santa María, La Soledad, El Recreo, Loro Huasi united by the
Provincial Route 149
Currently there is a single-gauge bridge 2 km upstream (taking
the location of the bridge that is the subject of this document as a reference), but it does not satisfy the
current demand of the population. A clear example of this is that the residents walk
along a footprint on the river bed joining both banks, causing continuous
processes of erosion, road risks and environmental deterioration of the sector. According to the documentation
consulted, this has a distance between the head of the piles and the underside of
the beams of 4.67m, and a sediment deposition rate of 3.20m, that is;
0.065m/year for the period 1972-2021 (49 years).
This executive project contemplates the construction of a two-lane bridge and
access roads in order to enhance the junction between Emp. National Route 40
(Las Mojarras) – Emp. Provincial Route N°149 (El Sitio). Based on the
preliminary requirements of the Provincial Directorate of Roads of Catamarca and as a result of
several technical meetings, the location of the Bridge was determined, considered
the most suitable, which is developed in this report.
EXECUTIVE PROJECT FOR BRIDGE OVER SANTA MARIA RIVER ON PROVINCIAL ROUTE N° 149
EMP SECTION. RN N°40 LAS MOJARRAS
EMPALME PROVINCIAL ROUTE N°149 EL PUESTO
12
In the first stage, the collection of background information, basic studies and
The geological, topographical and hydrological campaigns were carried out, from which it was observed
that the area where the bridge will be located will be located immediately
downstream of the confluence between the Santa María River and tributary streams on both
banks (Arroyo sin nombre and Arroyo Santa Rosa ), resulting in some
recommendations, such as carrying out protection works in the abutment area or
adopting abutments with a hydrodynamic shape in order to mitigate the effects that these
currents could generate on the structure.
With reference to the structure and as a result of the calculations described in Unit No. 6,
the construction of a bridge made of reinforced concrete in situ and prestressed concrete was defined.
The structural typology adopted for the superstructure is a prestressed concrete beam bridge
with direct adhesion, with a pre-slab system as lost formwork, with
a
specific length for the bridge of 350m that allows the channel to be bridged from the
east to west bank, with sections of 25m, with 13 piers and a total of 14 spans between abutments.
To complete the road design, work was done in the access areas to the bridge. Firstly,
its intersection with Provincial Route 357 (Eastern Access), for which it is proposed to add a
new branch to the roundabout where the Pachamama Monument is located. This is
designed in such a way that it is a mandatory point of passage for all travelers through this
monument, so significant for the entire population of Santa María. While with the
Intersection of National Route 40 (Western Access), the construction of a
modern roundabout with 3 access branches is suggested, in such a way as to guarantee a
safe, comfortable and economical intersection alternative.
By virtue of what is determined in Unit No. 3, the need to take into account
the possibility of implementing defense works to protect both the accesses
and the structure itself is established. On both the east and west banks,
the abutments are located in the floodplain area of ??the river and not within the
channel itself, so it is considered that these defenses will have the purpose
of protecting the banks of the channel in coincidence with the implementation point, downstream
and upstream with a total length of 400 linear meters.
A very interesting contribution was the socialization stage of the project through a
survey carried out among the residents of the town of Santa Maria, from which the
great interest in environmental issues and the very good reception of this work, considering
that it will have positive impacts in the short, medium and long term, also the majority of
residents are interested in participating in the environmental audit processes and
highlighted the most important social demands from the point of view of health and the
deep problems of flooding, garbage, burning on the banks of the river. And they showed their
demand for the prompt completion of the work of the
Cloacles Liquid Treatment Plant that is being built on the banks of the stream.
This work of art will significantly improve the permanent communication of the populations
located on both banks of the river, which will inevitably impact in an improvement in
economic, educational and health quality.
BRIDGE RECOVERY AND DEFENSE RECONSTRUCTION OVER SANTA MARIA RIVER - PROVINCIAL ROUTE N° 357 - SECTION: AMAICHA DEL VALLE - NATIONAL ROUTE N° 40 (PROGR. 13.14 KM) - TAFI DEL VALLE PROV. DE TUCUMÁN
Print version
Type of Work: Engineering Works
Client: PROVINCIAL DIRECTORATE OF ROADS
Tender No: 26/2023
Place: Province of Tucumán |
