update - Bispeengbuen

Bispeengbuen is a raised section of motorway in the north part of the city that opened in August 1972.

It has three lanes of traffic in each direction but with slip roads and with high sound baffles, added in the 1990s, it is intrusive as it cuts through and divides a densely-built residential neighbourhood. The heavy traffic using the road as a fast route into or out of the city is close to apartment buildings at the level of second-floor windows and, from the start, there were strong local protests with the opening marked by demonstrations and even a bomb threat.

The road is owned by the state but one suggestion now is that it should be transferred to the city and to the municipality of Frederiksberg - the road runs between the two - and, in 2017, politicians from both Copenhagen and Frederiksberg suggested that the road and its traffic could be taken down into a tunnel and the elevated section demolished.

This would provide an opportunity to reinstate a river that had flowed through a meadow here since the late 16th century although the river itself did not run along a natural course. In the 1580s, it was diverted to bring water to low marshy ground around the west side of the city, outside and below the defensive embankments, to form a stronger outer defence and to provide a supply of fresh water for the city.

Around 1900, at the city, end the river, Ladegårdsåen, was taken down into a covered culvert and the road to the lakes became a major route into the city from the north.

From the north end, from Borups Allé, traffic coming into the city goes under the suburban railway line - just to the east of the station at Fuglebakken - and then, immediately south of the railway line, the traffic is taken up onto the raised section that continues on for about 700 metres to Borups Plads where the road returns to ground level but the tunnel would continue on further, closer to the intersection with Jagtvej to make this north part of the proposed tunnel about a kilometre in length.

If the river is reinstated with extensive planting to create a park here, the work could be part of major climate-change mitigation on this side of the city and would create a significant amenity for this residential area.

With a decision on the tunnel delayed, the area under the raised section of the road has been improved with the opening in April 2019 of Urban 13 - “a creative urban space.”

Designed by Platant, shipping containers have been adapted to create a cafe and a function room for local events and an area with steep blocks or steps for seating forms an outdoor concert venue and there is new planting in containers.

proposal from PLATANT to build a deck over the elevated motorway for housing and gardens with access by new towers against the edge of the road

Container City will be here for five years and, even then, work on the elevated roadway may be delayed so Platant have put forward an imaginative and ambitious scheme to adapt the motorway itself with an upper deck that could be constructed above the road deck to support new housing and gardens and with access by way of a number of new towers built along the road edge. It would be designed so that this could be dismantled and the materials reused if work on demolishing the road and building the tunnel does go ahead.

URBAN 13
PLATANT
Cloudburst Masterplan by Rambøll

 

view from Google Earth with the curve of the elevated section of motorway top left

a tunnel, to take the main through traffic underground, could replace the motorway and it could be continued down Åboulevard, following the line of an old river to the lakes, and the river, now in a covered culvert below the road, would then be returned to the surface

 

the line of the proposed tunnel from the suburban railway line at Fuglebakken to the lakes and from there along the line of HC Andersens Boulevard and on under the harbour to Islands Brygge to connect with a north harbour tunnel that is also being considered.

there would be a limited number of entry and exit points from the tunnel because it is not for local journeys but for through traffic

the tunnel from Fugglebakken to Islands Brygge is just over 4.5 kilometres

 

proposal for the park and the reinstated river if Bispeengbuen - the elevated motorway - is demolished and the traffic taken down into a new tunnel

 

update - a road tunnel below Åboulevard and then on below HC Andersens Boulevard

Åboulevard in the late 19th century looking north with the river still at the centre

Bethlehem church designed by Kaare Klint was completed in 1938 but the apartment building dating from around 1900 is on the right on both the historic view and the photograph of Åboulevard now

 

A proposal for a major engineering project, to construct a traffic tunnel down the west side of the historic city centre, is now in doubt.

It would take underground much of the traffic that now drives along HC Andersens Boulevard, on the west side of the city hall, and is part of a plan to remove the elevated motorway at Bispeengbuen - bringing traffic into the city from the north - and this would make it possible to reinstate a river that flowed into the lakes that now flows through a covered culvert below Åboulevard.

From Jagtvej, at the south end of the elevated highway at Bispeengbuen, and following the line of Åboulevard to the outer side of the lake, is about 1.6 kilometres and, from the lakes, a tunnel running between Jørgens Sø and Peblinge Sø and on along the line of Gyldenløvesgade to Jarmers Plads and then down the full length of HC Andersens Boulevard and then under the harbour to Islands Brygge is another 2 kilometres so, including the proposed tunnel at Bispeengbuen, that would be between 4.5 and 5 kilometres of tunnel in total.

For comparison, in Oslo, the Festning tunnel - opened in 1990 to take traffic away from the square in front of Oslo city hall - and then an extension to the east - the Operatunnelen completed in 2010 - form, together, about 5.7 kilometres of underground motorway.

The landscape and architecture studio Tredje Natur and the engineering specialists COWI have drawn up a feasibility study for the proposed scheme for the finance directors of the city and of the municipality of Frederiksberg - the road runs between the two areas.

Reinstating the river and extensive landscaping would be an important part of storm water protection for the low-lying areas of Frederiksberg with planting, surface drains, and culverts controlling storm floods before taking it away from the area in substantial storm drains in the bottom half of the tunnels below the road decks in the upper half of the tunnel.

Tredje Natur have produced drawings for the planting that would be possible along HC Andersens Boulevard if the heavy traffic that uses the road is taken down into a new tunnel. There could be a narrow road for local traffic, an open water course and extensive planting.

Tredje Natur

 

a suggestion for new landscaping along HC Andersens Boulevard proposed by Tredje Natur

1 south end of the boulevard looking south towards Langebro with the Glyptotek to the right
2 looking north from the Glyptotek with Tivoli to the left and the city hall to the right
3 from the south-west corner of the city hall square
4 crossing the city hall square heading north
5 the north end of HC Andersens Boulevard looking to to the tower of Realdania on Jarmers Plads

the map was published in 1860 and shows the river flowing into the lakes at the south end of Peblinge Sø with the road on the south bank and just a narrow lane, Aagade, at the back of gardens on the north bank

the river was moved down into a culvert and Åboulevard - the road above the culvert - is now wide and busy with traffic to and from the centre of the city

the lakes to the top with Sankt Jørgens Sø to the left and the end of Peblinge Sø to the right

the road over the causeway comes down to Jarmers Plads and then past the west side of the city hall at about the centre of the photograph with Tivoli to the left and then HC Andersens Boulevard continues on down to Langebro as a main route to cross from the city to Amager

historic aerial view showing the bridge over the harbour at Langebro that was built in 1903 and the first part of HC Andersens Boulevard with densely-planted trees down the centre rather than bumper to bumper cars now