Effects of urban highways on their proximal neighbourhoods: A Space Syntax analysis
The inauguration of the tunnel under Kennedy Avenue in October 2017 in Santiago, transformed the last section of the city’s east-west highway that still maintained local road characteristics in an expressway. With this, the first stage of urban highways that came into operation twenty years ago, whi...
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| स्वरूप: | Online |
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Universidad Diego Portales
2018
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| ऑनलाइन पहुंच: | https://www.revista180.udp.cl/index.php/revista180/article/view/578 |
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oai:ojs.revista180.cl:article-578 |
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Universidad Diego Portales |
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spa |
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Online |
| author |
Figueroa, Cristhian Greene, Margarita Mora, Rodrigo |
| spellingShingle |
Figueroa, Cristhian Greene, Margarita Mora, Rodrigo Effects of urban highways on their proximal neighbourhoods: A Space Syntax analysis |
| author_facet |
Figueroa, Cristhian Greene, Margarita Mora, Rodrigo |
| author_sort |
Figueroa, Cristhian |
| title |
Effects of urban highways on their proximal neighbourhoods: A Space Syntax analysis |
| title_short |
Effects of urban highways on their proximal neighbourhoods: A Space Syntax analysis |
| title_full |
Effects of urban highways on their proximal neighbourhoods: A Space Syntax analysis |
| title_fullStr |
Effects of urban highways on their proximal neighbourhoods: A Space Syntax analysis |
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Effects of urban highways on their proximal neighbourhoods: A Space Syntax analysis |
| title_sort |
effects of urban highways on their proximal neighbourhoods: a space syntax analysis |
| description |
The inauguration of the tunnel under Kennedy Avenue in October 2017 in Santiago, transformed the last section of the city’s east-west highway that still maintained local road characteristics in an expressway. With this, the first stage of urban highways that came into operation twenty years ago, which have been questioned from different fronts, was ended. Using the theoretical and methodological framework of Spatial Syntax, the present work seeks to deepen the understanding of the effects (positive and negative) of the current urban highway network on its adjacent neighbourhoods.All highways that penetrate the urban fabric were analysed (Autopista Central, Costanera Norte, Acceso Sur to Santiago and Américo Vespucio) in three scenarios; base situation, free city and toll city, considering a buffer of 500 meters from each.The results showed that while Global Integration, or the global accessibility of all the street network, shows a high variation in the four highways analysed, Local Integration (accessibility at neighbourhood level) does not show major changes. The variations at global level can be explained by the interventions of neighbouring roads to the highway: while in some cases an effort was made to generate continuity among both sides, even where previously there was none (e.g. Costanera Norte build new bridges over Rio Mapocho); in others the highway split neighbourhoods that previously were one.This shows that the negative effects of highways in neighbourhoods can be mitigated (to a large extent), with an adequate design of the connections to the urban network. Twenty years after the first urban highway in Santiago was built, it seems necessary that these infrastructures begin to be evaluated as urban projects with consequences on their surroundings. |
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Universidad Diego Portales |
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2018 |
| url |
https://www.revista180.udp.cl/index.php/revista180/article/view/578 |
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oai:ojs.revista180.cl:article-5782018-12-18T19:12:46Z Effects of urban highways on their proximal neighbourhoods: A Space Syntax analysis Efectos de las autopistas urbanas en sus entornos inmediatos: un análisis desde la Sintaxis Espacial Figueroa, Cristhian Greene, Margarita Mora, Rodrigo accessibility; neighborhoods; urban grid; urban highways; space syntax urbanismo; planificación urbana accesibilidad barrial; autopistas urbanas; trama urbana; sintaxis espacial The inauguration of the tunnel under Kennedy Avenue in October 2017 in Santiago, transformed the last section of the city’s east-west highway that still maintained local road characteristics in an expressway. With this, the first stage of urban highways that came into operation twenty years ago, which have been questioned from different fronts, was ended. Using the theoretical and methodological framework of Spatial Syntax, the present work seeks to deepen the understanding of the effects (positive and negative) of the current urban highway network on its adjacent neighbourhoods.All highways that penetrate the urban fabric were analysed (Autopista Central, Costanera Norte, Acceso Sur to Santiago and Américo Vespucio) in three scenarios; base situation, free city and toll city, considering a buffer of 500 meters from each.The results showed that while Global Integration, or the global accessibility of all the street network, shows a high variation in the four highways analysed, Local Integration (accessibility at neighbourhood level) does not show major changes. The variations at global level can be explained by the interventions of neighbouring roads to the highway: while in some cases an effort was made to generate continuity among both sides, even where previously there was none (e.g. Costanera Norte build new bridges over Rio Mapocho); in others the highway split neighbourhoods that previously were one.This shows that the negative effects of highways in neighbourhoods can be mitigated (to a large extent), with an adequate design of the connections to the urban network. Twenty years after the first urban highway in Santiago was built, it seems necessary that these infrastructures begin to be evaluated as urban projects with consequences on their surroundings. La inauguración del túnel bajo la avenida Kennedy en octubre de 2017 en Santiago, transformó en vía expresa el último tramo de la autopista oriente-poniente de la ciudad que aún mantenía ciertas características de vía local. Con ello, se puso fin a la primera etapa de autopistas urbanas que entraron en funcionamiento hace ya 20 años y que han sido cuestionadas desde distintos frentes. Este trabajo busca profundizar en el análisis de los efectos (positivos y negativos) que la actual red de autopistas urbanas tiene en los barrios adyacentes, usando el marco teórico y metodológico de la sintaxis espacial.Para ello se analizaron las cuatro autopistas que penetran en el tejido urbano (Autopista Central, Costanera Norte, Acceso Sur a Santiago y Américo Vespucio), y tres escenarios: situación base, ciudad gratuita, y ciudad tarificada, considerando un buffer de 500 metros desde cada autopista para el análisis.Los resultados mostraron que la integración global o accesibilidad global de la red de calles, varió fuertemente en las cuatro autopistas analizadas, mientras que la integración local (accesibilidad a nivel de barrio) no muestra mayores cambios. Las variaciones a nivel global se explican por la forma en que fue intervenida la trama de calles vecinas a las autopistas: mientras en algunos casos se hizo un esfuerzo por generar continuidad entre ambos lados de la vía donde antes no la había (por ejemplo, Costanera Norte donde se construyeron nuevos puentes sobre el río Mapocho); en otros la intervención de las autopistas sobre la trama de calles tendió a dividir barrios que antes eran uno solo (por ejemplo Acceso Sur).Lo anterior muestra que los efectos negativos de las autopistas en los barrios pueden ser mitigados (en gran medida), con un adecuado diseño de las conexiones en sus bordes. Pasados 20 años desde la primera autopista urbana en Santiago, parece necesario que estas infraestructuras comiencen a ser evaluadas como proyectos urbanos con consecuencias en sus entornos. Universidad Diego Portales FONDECYT 1171232 y a CEDEUS (Proyecto CONICYT/FONDAP 15110020) 2018-12-18 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://www.revista180.udp.cl/index.php/revista180/article/view/578 10.32995/rev180.Num-42.(2018).art-578 Revista 180; Núm. 42 (2018) Revista 180; Núm. 42 (2018) 0718-669X 0718-2309 spa https://www.revista180.udp.cl/index.php/revista180/article/view/578/404 https://www.revista180.udp.cl/index.php/revista180/article/downloadSuppFile/578/860 https://www.revista180.udp.cl/index.php/revista180/article/downloadSuppFile/578/861 https://www.revista180.udp.cl/index.php/revista180/article/downloadSuppFile/578/862 https://www.revista180.udp.cl/index.php/revista180/article/downloadSuppFile/578/863 https://www.revista180.udp.cl/index.php/revista180/article/downloadSuppFile/578/864 https://www.revista180.udp.cl/index.php/revista180/article/downloadSuppFile/578/865 https://www.revista180.udp.cl/index.php/revista180/article/downloadSuppFile/578/866 Copyright (c) 2018 Revista 180 https://creativecommons.org/licenses/by/4.0 |