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Life cycle assessment of a road investment: estimating the effect on energy use when building a bypass road
Swedish National Road and Transport Research Institute, Society, environment and transport, Environment.
Swedish National Road and Transport Research Institute, Society, environment and transport, Transport economics Stockholm.
2013 (English)Report (Other academic)
Abstract [en]

In the transport sector, major efforts have been concentrated on developing more fuel efficient engines and vehicles. However, the road infrastructure, its operation and maintenance also use energy and do have an effect on traffic fuel consumption and emissions. The objective of this study is to estimate the total energy use in a life cycle perspective of a road infrastructure investment and the impact of different phases of the roads life time. How the results are related to the transport objectives is also addressed.

A life cycle assessment method is used to evaluate an infrastructure investment, including construction, operation, maintenance and traffic during 60 years. A small community is used as a case study where a bypass has been built and the result show that this investment will increase the total energy use by approximately 60 %, or 1 550 TJ compared to not building it. A major part of the increase is due to traffic, and since mostly fossil fuel is used there will also be an increase in greenhouse gas emissions. The result stipulates that the aspects of energy efficiency and reduction of greenhouse gases has not been accounted for in the planning or it has been considered as less important than other aspects, e.g. traffic safety and accessibility.

Place, publisher, year, edition, pages
Stockholm: Centre for Transport Studies, CTS , 2013. , 16 p.
CTS Working Paper, 2013:23
Keyword [en]
Road, Road construction, Energy consumption, Life cycle assessment, Calculation
National Category
Infrastructure Engineering
Research subject
30 Road: Highway design; 10 Road: Transport, society, policy and planning, 15 Road: Environment
URN: urn:nbn:se:vti:diva-7478OAI: diva2:780431

Presented at the 13th World Conference on Transportation Research, WCTR, Rio de Janeiro, Brazil, July 15-18, 2013

Available from: 2015-01-14 Created: 2015-01-14 Last updated: 2016-08-30Bibliographically approved

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Carlson, AnnelieMellin, Anna
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