Cycling offers numerous benefits, positively impacting cyclists’ health and having fewer harmful effects on the environment compared to most other forms of transport. However, adverse weather conditions can deter regular cycling. To mitigate these disadvantages, constructing a bicycle tube is a potential solution. We exemplify this with a planned bicycle tube in a Norwegian city known for harsh weather, discussing how it could promote cycling by reducing the negative impact of weather conditions. The number of cyclists is influenced by weather indicators such as temperature, wind, and precipitation, as well as variations between workdays and seasons. It is estimated that the construction of the bicycle tube would double the number of cyclists in the studied transport corridor due to improved weather protection. This increase would generate benefits related to travel time, health, and the environment. Additionally, the free-to-use bicycle tube could improve accessibility for people without access to a car, contributing to a just transition to sustainable transport. However, for the case studied, the benefits are not sufficient to cover the construction costs of the bicycle tube. Therefore, the project is not strictly profitable from a welfare perspective. Nonetheless, other non-monetary effects could be substantial for such a project.