Library picture: A cycle path in Gelderland province, Netherlands, 12 May 2017. Photo credit: m66roepers (CC BY 2.0) 

The new 1.7km “cycle highway”, linking Wageningen and Arnhem in the east of the Netherlands, will be kept warm by residual heat from a local paper plant.

Concerns have been raised that frogs might find the warm path a little too comfortable, presenting a danger to cyclists, and themselves. But Gelderland council, in east Netherlands, has promised to monitor the impact on the local wildlife, which includes many water birds and beavers.

Towns across the Netherlands have been investing in heating stretches of cycle paths, but nothing on the scale being proposed in Gelderland has been constructed.

Cutting through the Jufferswaard, a nature reserve near the Nederrijn in Renkum, east Netherlands, the two-way cycle path is also likely to be one of the most idyllic, and is due to be completed in time for the winter of 2019.

De Jufferswaard, a nature area of 31 hectares (77 acres), is located in the floodplain along the Nederrijn river, between the factory site of paper mill, Parenco, one of the area’s biggest employers, and the Rhine bridge at Heteren village, 12km southwest of Arnhem.

Petra Borsboom, a spokesperson for Gelderland council, said they believed the path would be the longest of its type in western Europe, adding: “We don’t want to make the claim that it is the longest in the world because there might be one in China we don’t know about.”

The new fast cycle route will shorten the riding distance between Wageningen and Arnhem by 600m. The biggest gain of this new route will be “time, safety and experience”, the council said.

Borsboom said the project will be put out to tender soon. “We want to work with companies developing new techniques”, she said. “The company who [wins the contract] will have a great influence on how they do the heating.”

The spokesperson added: “This path is mainly for commuters. It is a beautiful protected area and that is the reason we wanted to do this. We don’t want to use salt there to keep it snow-free.

“There was a lot of fear that frogs in the road would want to stay there but we will follow the impact on the smaller animals very closely.”

Daniel Boffey in Brussels