This issue of the Bridge Engineering journal includes papers from Canada, China, Sweden and the UK, covering a wide range of topics from papers on bridge monitoring to wind structure interaction and new bridge construction.It has always been the goal of our publication to reach the maximum audience of the bridge engineering community worldwide, addressing every hot topic in our profession with state-of-the-art papers in the field.As a sign of our times, where growing concern and investment is being committed to monitoring, assessment and conservation of existing infrastructure, this issue includes three papers on different aspects of the monitoring of existing structures. The effort currently being made in this field is also confirmed by the overwhelming success of our recent call for papers on bridge assessment, which has resulted in nearly 30 submissions and will be the subject of at least one themed issue in the near future.Modern techniques on data capturing that provide useful information to bridge engineering on existing structures are always welcome, and this is an area where current developments on computer assisted tools, either in data capturing or processing, are offering interesting possibilities to engineers. Murray et al. (2015) present a paper on field monitoring of a bridge using digital image correlation with the aim of supplementing visual inspection of structures with quantitative data obtained from digital images, which require a much easier system to implement than other sensors.González Silva and Karoumi (2015) provide a further development of the well-known B-WIM (bridge weigh in motion) systems showing the results obtained on the measurements implemented on a railway bridge in Sö derströ m, Sweden. While B-WIM models are well known in road bridges, there are far fewer cases developed specifically for railway bridges. As with road bridges, a correct and accurate estimation of the real loading patterns of the structure, including dynamic effects, is crucial to the proper assessment of existing structures.Also under the subject of monitoring, Canning et al. (2015) have a very interesting paper, in this case orientated to obtain empirical information of the mid-term behaviour of relatively new materials on bridge design, such as an all-fibre-reinforced polymer composite bridge.Covering a completely different subject, Su et al. (2015) present a paper on dynamic reliability of long-span bridges under wind turbulence. Their research is more orientated to the statistical component of this subject. Their theoretical work is used on the specific case of the Yamen Bridge in China with a main span of 338 m.In the field of new construction, Woodier and James (2015) describe the challenges in the design and construction of the Jarrold Footbridge, opened in 2012, where parametric threedimensional modelling was used as part of the optimisation process to deliver this high-quality iconic pedestrian bridge.Also under new design and construction, Zhang et al. (2015) present the main elements of a long-span ...