SummaryTension laminated timber bridges are increasingly used nowadays, but knowledge about their long-term behavior is still not satisfactory. This review shows the critical details of wooden bridges regarding durability. Although some of them are very common, it is still necessary to improve their properties to limit the effects of high moisture content. Bridges are often physically and chemically protected from external biological attacks, but environmental issues have raised concerns about the use of toxic chemical treatments. Furthermore, the level of mechanical pre-tension is known to decrease throughout life. All these issues must be studied to ensure technical durability. Keywords: glulam decks, durability, water traps, moisture content, tension level, durability. Introduction The durability of wooden bridges is a key factor in their design. Wooden bridges in the EU should generally have a minimum lifespan of 100 years and we have good examples of well-designed and durable bridges. Herein a review of glulam decks is carried out with particular attention to the risk of high humidity in bridges, use of preservatives, loss of pre-compression, local damage, poor maintenance and detailing. All of these elements are important when it comes to durability. Stress-relieving laminated timber roofing was first used in Canada in the late 1970s and later in the United States and the Nordic countries of Europe. The wooden slats are held together by pre-stressed bars which are generally inserted into pre-drilled holes in the center of the deck depth. The prestress generates lateral stresses between the lamellae which then function as a plate due to interlame friction......center of article......Kepp, T. Dyken, (2013), " Contribution to Structural Details on Timber Bridges", in Proceedings of the International Conference on Timber Bridges (ITCB2013), Las Vegas, Nevada, United States.[7] O. Kleppe, (2010), "Durability of Norwegian wooden bridges", in Proceedings of the International Conference on Wooden Bridges (ITCB2010), Lillehammer, Norway, pp. 157-168.[8] A. Lawrence, (2008), “Modern wooden bridges: an international perspective”, Structural Engineer, vol. 86, n. 18.[9] A. Pousette, (2011), "Structural systems - infrastructures", Design of wooden structures, Swedish Wood, ed.[10] Statens Vegvesen, (2011), Manual 018 - Vegbygging.[11] R. Crocetti, R. Kliger, (2010), “Anchorage systems to reduce pretension loss in glulam bridges”, in Proceedings of the International Conference on Timber Bridges (ITCB2010), Lillehammer, Norway, pp. 359-370.