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Pylons and supporting caissons are positioned on the border of tidal and intertidal zones, respecting Port of London Authority clearance stipulations. Another advantage of the double curve is that the extra length of 1 in 20 ramp between these points and disabled lifts reduces the remaining drop to to 3.68m. We have shown very shallow stairs with deep landings which could be incorporated into even the tightest landing conditions. Ramps would of course also be possible. We also feel that requiring cyclists to dismount before major road junctions would be a sensible safety precaution.
Curving the deck nearly parallel to the floodwall creates a portion of riverside sheltered from traffic. This is served by a café/street-food outlet tucked under the stair next to each pair of disabled lifts. These areas (shaded yellow) are raised to permit seated river views over these sections of floodwall even at the 2100 level. On the bridge itself the wider pavement on the outside of each curve also provides space for fixed seating.
BALANCING CURVES 055NINE ELMS BRIDGE
1. PEDESTRIANS & CYCLISTS 3. HEIGHT AND ACCESS ISSUES
RIVER THAMES
NINE ELMS LN
RIVERW
ALK
RETAINING WALL
DECK RAISED FOR
VIEWS
SHIELD FROM TRAFFIC
AND NOISE
RETAINING WALL
DECK RAISED FOR
VIEWS
SHIELD FROM TRAFFIC
AND NOISE
A FLEXIBLE SPACE
cycle relax walk / viewsMOVEMENTPASSIVE PASSIVE
10m
4m2m 4m
cycle walk / viewsMOVEMENT PASSIVE
walk / viewsPASSIVE
10m
4m 3m3m
A FLEXIBLE SPACE
cycle relax walk / viewsMOVEMENTPASSIVE PASSIVE
10m
4m2m 4m
cycle walk / viewsMOVEMENT PASSIVE
walk / viewsPASSIVE
10m
4m 3m3m
10m
A Bridge has the purpose of providing passage over an obstacle
Pedestrians Cyclists
walk / cycle / relax
A FLEXIBLE SPACE
MAKING A PLACE
MOVEMENT
ONE SINGLE SPACE
GATHERING + MOVEMENT
10m
walk / cycle relax / enjoyrelax edge
PASSIVE PASSIVE
9m
3m3m 3m
OFF-PEAK HOURS
DEDICATED CORRIDORS BUT FLEXIBLE LAYOUT
PEAK HOURS
cycle walk / viewsMOVEMENT PASSIVE
walk / viewsPASSIVE
10m
4m 2m - 4m2m - 4m
2. MAKING A PLACE 4. CONSTRUCTION PHASING
Meeting Points
Seating and Gathering
Views
Raised Areas (Active Points)
Retaining wall
Noise shield
cyclist dismount
LIGHT TOUCH ON LANDPOINT
CAFE / RETAIL GREEN / RELAX
lift from ground level to bridge deck
INCLUSIVE ACCESS
12.35 m
3.68 m
24.35 m
1:20 gradient of �atter over bridge deck
GENTLE INCLINE
cyclist speed reduced
TRAFFIC JUNCTION SAFER
+6.35m floodwall height
+7.1m floodwall clearance
+4.68m average EGL
* all levels AOD
+5.45m raised cafe deck
+8.1m top of deck
walk / cycle TOP OF DECK
RAISED CAFE DECKriver views
1. Install cofferdam and construct bridge piers.
4. Lift into place and temporary guy.
7. Extend bridge deck building out from masts
2. Construct access ramp and temporary construction deck.
5. Install bridge deck adjacent to bank on temporary construction deck.
8. Install final section of bridge deck and remove temporary construction deck.
3. Fabricate masts and transport to site by barge.
6. Bring sections of bridge deck to site, by barge and install.
9. Bridge completed and fully operational
Elevated deck for cafe and views to the river over floodwall
Curved landing points look to minimize land intake from the riverwalk
View point
Flexible cycle corridor
Pylon (ETFE / Steel)
Landpoint: slowing down cyclists
Lift access 4.68m AOD
Bridge Pier (clearance between piers of 150m)
Year 2100 floodwall level
We have treated the 10m wide bridge deck like a London Street without cars. Cyclists occupy the middle, pedestrians both sides. The section is symmetrical only at the mid span position (3m pavement, 4m cycleway, 3m pavement) but asymmetrically at the two curves with a 4m pavement on the outside (which is unobstructed by a pylon). This philosophy allows peak and non-peak modes of operation. It allows cyclists and pedestrians to meet and talk. It is also no different at North and South Street intersections to any other London street.
150m clear between piers
10m
A Bridge has the purpose of providing passage over an obstacle
Pedestrians Cyclists
walk / cycle / relax
A FLEXIBLE SPACE
MAKING A PLACE
MOVEMENT
ONE SINGLE SPACE
GATHERING + MOVEMENT
10m
walk / cycle relax / enjoyrelax edge
PASSIVE PASSIVE
9m
3m3m 3m
OFF-PEAK HOURS
DEDICATED CORRIDORS BUT FLEXIBLE LAYOUT
PEAK HOURS
cycle walk / viewsMOVEMENT PASSIVE
walk / viewsPASSIVE
10m
4m 2m - 4m2m - 4m
10m
A Bridge has the purpose of providing passage over an obstacle
Pedestrians Cyclists
walk / cycle / relax
A FLEXIBLE SPACE
MAKING A PLACE
MOVEMENT
ONE SINGLE SPACE
GATHERING + MOVEMENT
10m
walk / cycle relax / enjoyrelax edge
PASSIVE PASSIVE
9m
3m3m 3m
OFF-PEAK HOURS
DEDICATED CORRIDORS BUT FLEXIBLE LAYOUT
PEAK HOURS
cycle walk / viewsMOVEMENT PASSIVE
walk / viewsPASSIVE
10m
4m 2m - 4m2m - 4m
Dedicated corridors but Flexible Layout
01 0201
02
We should also point out that this design minimises structural requirements within landing points and gives the best chance of preserving existing trees. There is also the possibility of manoeuvrings deck sections for the central span into position from previously suspended sections to either side by cantilevering them out with temporary supports.
The bicycle is emblematic for economy-of-means and balance. We have tried to create something timeless, elegant and inevitable. The slender, snaking deck and its minimal stainless steel hangers draw one’s attention first to a pair of leaning pylons magically balanced on their offset concrete bases. The steel armatures from which these pylons are fabricated are enveloped in a single skin of pressurised light-diffusing ETFE, inside which dynamic games of coloured light can be played.
+9.96m AOD clear height
055
The bicycle is emblematic for economy-of-means and balance. We propose this bridge should also be so. We have tried to create something timeless, elegant and inevitable. The slender, snaking deck and its minimal stainless steel hangers draw one’s attention first to a pair of leaning pylons magically balanced on their offset concrete bases. The steel armatures from which these pylons are fabricated are enveloped in a single skin of pressurised light-diffusing ETFE, inside which dynamic games of coloured light can be played.
We have treated the 10m wide bridge deck like a London Street without cars. Cyclists occupy the middle, pedestrians both sides. The section is symmetrical only at the mid span position (3m pavement, 4m cycleway, 3m pavement) but asymmetrically at the two curves with a 4m pavement on the outside (which is unobstructed by a pylon). This philosophy allows peak and non-peak modes of operation. It allows cyclists and pedestrians to meet and talk. It is also no different at North and South Street intersections to any other London street.
Curving the deck nearly parallel to the floodwall creates a portion of riverside sheltered from traffic. This is served by a café/street-food outlet tucked under the stair next to each pair of disabled lifts. These areas (shaded yellow) are raised to permit seated river views over these sections of floodwall even at the 2100 level. On the bridge itself the wider pavement on the outside of each curve also provides space for fixed seating.
Pylons and supporting caissons are positioned on the border of tidal and intertidal zones, respecting Port of London Authority clearance stipulations. Another advantage of the double curve is that the extra length of 1 in 20 ramp between these points and disabled lifts reduces the remaining drop to to 3.68m. We have shown very shallow stairs with deep landings which could be incorporated into even the tightest landing conditions. Ramps would of course also be possible. We also feel that requiring cyclists to dismount before major road junctions would be a sensible safety precaution.
We should also point out that this design minimises structural requirements within landing points and gives the best chance of preserving existing trees. There is also the possibility of manoeuvrings deck sections for the central span into position from previously suspended sections to either side by cantilevering them out with temporary supports.
BALANCING CURVES
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