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Traffic accidents on Norwegian road bridges 2010-2016

Authors: Fridulv Sagberg, Per Andreas Langeland
Report nr: 1606/2017
ISBN: 978-82-480-2104-9
ISBN (digital version): 978-82-480-2103-2
Language: norsk
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During the years 2010-2016 there were 38 fatal crashes on or close to road bridges in Norway. Thirty-one fatal crashes were judged to be related to characteristics of the bridge or of the road close to the bridge. Hitting or driving through the bridge guardrail occurred in several crashes. In addition there were 115 crashes with severe injury and 1280 with minor injury. Out of 7300 bridges over 10 metres long, personal injury crashes had occurred on 869 bridges. Crash risk is higher near the ends of the bridges and on the road close to the bridge than in the middle of the bridge. However, total crash risk on bridges – including 50 metres before and after – is somewhat lower than on the remaining road network. This is partly due to the absence of intersections on and near most bridges. Another possible explanation, which should be investigated, is whether some drivers tend to reduce their speed when approaching a bridge. Several crashes might have been less serious if guardrails had been improved. Extended guardrails before bridges could have reduced the consequences of driving off the road on the approach to a bridge.


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