New access to Bombinhas: Cost and benefit analysis for each option

• DOI: 10.22533/at.ed.7832028019

• Palavras-chave: Atena

• Keywords: Mobility, Cost estimation, Time execution estimation, Minimum travel time.

• Abstract:

  Mobility is one of the main

  challenges of modern cities, becoming even

  worse if financial resources are rare and natural

  or artificial obstacles are present. This is the

  case of Bombinhas, a city of northeast of Santa

  Catarina, in south of Brazil. It has around of 15

  thousand continues habitants but, due to its

  beautiful beaches, usually receives hundreds

  of thousands more in summer. As result big

  traffic jams are registered year before year

  on the only paved access to the city: through

  Bombas’ hill. Since the last decade, the Santa

  Catarina Government in association with city

  hall have been discussed the construction

  of a second access to change this scenario.

  However consensus about paving another land

  access, through Zimbros’ hill, or a construction

  of a tunnel has not achieved. This article brings

  to light topics about this issue, calculating

  estimations for preliminary cost and execution

  time besides values for minimum travel time

  between Porto Belo (border city) and reference

  points inside of city. While parametric estimation

  (PE) was utilized to define the preliminary cost

  a critical path method (associated with NTNU

  prediction method for Drill and Blast and DNIT/

  SICRO method for pavement tasks) was utilized

  to define the execution time, the minimum travel

  time was obtained through relation between

  distance and maximum velocity on path. As

  expected the more expensive and more timeconsumption

  execution option (which connect

  Porto Belo with Sertãozinho by a tunnel) has

  the minimum travel time in all scenarios. The

  reduction is around (50 – 60) % in all path

  analysed in comparison with worst one. Similar,

  but worse performance, are obtained with

  connection between Zimbros and Porto Belo

  by smaller tunnel. Options which involve paving

  show to be cheaper and faster to be executed,

  but the minimum travel time improvement show

  to be not so significant comparatively. Special

  attention should be given for option which

  connects Sertãozinho and Porto Belo downtown.

  The low maximum velocity on sequential road

  system and the proximity with actual access put

  in doubt the efficiency of solution. This number

  together with numerical criteria of decision

  can help to find the more adequate option for

  Bombinhas and region.

• Número de páginas: 8