Tidevannsstien (The tidal water path) was built in 2009 and is on the south side of the sound that connects Trondheimsfjord and Borgenfjord (sometimes called Børgin). Trondheimsfjord is to the west and Borgenfjord is to the east. Borgenfjord is a very large body of tidal sea water about 10 km from north to south and between 1 and 3 km wide, so the amount of water that flows through this sound is considerable. The sound itself has an S-shape and the current will be much stronger on one side than the other in the bends. It is not advisable to take a boat against the tide. Most boat traffic on the sound would be at slack tide, when there isn’t as much current.
The name of the municipal center, Straumen, refers to the strong current that flows between these two bodies of water. There can be up to 1 to 1.5 meters difference in the water level on either side of the sound which creates a very strong current which tries to even out the difference. This is one of the strongest currents in Northern Europe. The water flow changes direction roughly every six hours. The average speed is between 7 to 9 knots (about 14 km an hour), but the top speed can be much faster.
The tidal water path is about 300 meters long and leads to an open area below the housing on the slope. My husband and I took this walk on Monday, the 10th of May after doing an errand in Straumen. The sun was shining and we wanted to have a walk and this one wouldn’t take too much time. We got a slightly longer walk by parking on the north side of the bridge, crossing the bridge and then following the path. We returned to the car the same way that we came. The first picture was taken at 11:22 and the last picture was taken at 11:49, so we used only 27 minutes on the walk.
The first bridge over the sound was opened in 1861. Before that people had to take a ferry across. The first bridge had to open to allow ships to go through. You can see (though not very clearly) a picture of the old bridge in the information sign above (second picture on the left). In 1958 a second bridge made of steel and concrete was built and in 1987 a pedestrian path was added to the bridge on the western side. In 2007 the bridge was given protected status.
We had a sunny morning for our walk. One could make it longer by continuing along the shore and coming to Sundsand, our local sandy beach. However, we just wanted a short half hour walk and returned to the car to head home again.