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STREETSCAPE GUIDANCE

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HOME<br />

INTRODUCTION<br />

PART A<br />

A vision for London’s streets<br />

PART B<br />

From strategy to delivery<br />

PART C<br />

New measures for new challenges<br />

PART D<br />

Balancing priorities<br />

PART F<br />

Appendix<br />

PART E<br />

Physical design and materials<br />

SECTION 6<br />

Introduction<br />

SECTION 7<br />

High quality footways<br />

SECTION 8<br />

Carriageways<br />

SECTION 9<br />

Crossings<br />

SECTION 10<br />

Kerbside activity<br />

SECTION 11<br />

Footway amenities<br />

SECTION 12<br />

Safety and functionality<br />

SECTION 13<br />

Street environment<br />

SECTION 14<br />

Transport interchanges<br />

Streetscape Guidance<br />

[Part E – Physical design and materials] Crossings 167<br />

9.6 Grade-separated pedestrian<br />

crossings<br />

General principles<br />

Where other design approaches are not possible,<br />

grade-separated crossings can reduce the<br />

severance effect of major highways and other<br />

barriers. They need to be designed very carefully,<br />

to make them easy to use, direct, safe and<br />

attractive. They should always cater for people<br />

on foot and on cycles.<br />

Grade-separated crossings on the TLRN are most<br />

commonly found on high speed roads (40mph<br />

or greater) and at complex junctions. In London<br />

these often take the form of subways rather than<br />

Figure 163: This footbridge L01 crossing<br />

Ruckholt Road, becomes a landmark through<br />

use of bright colours and thoughtful design<br />

footbridges to minimise the visual intrusion on<br />

the street environment.<br />

Grade-separated crossings should only be<br />

considered in exceptional circumstances where<br />

high vehicle speeds and traffic capacity need<br />

to be maintained and where there is evidence<br />

that road safety risks would not support atgrade<br />

facilities. This should be prioritised where<br />

designated cycle routes meet a barrier in the<br />

form of a motorway or topographic constraint,<br />

such as a river, and the route needs to continue.<br />

Benefits<br />

• Provides the opportunity for improved<br />

connectivity between neighbourhoods severed<br />

by a high speed road network<br />

• Separated crossings are considered safer than<br />

at-grade facilities for high speed road types<br />

• Enables continuity for cycle and pedestrian<br />

routes<br />

• Does not impact on traffic capacity<br />

• Wide land bridges can provide additional<br />

amenity and green infrastructure value<br />

Constraints<br />

• Expensive to construct and maintain<br />

• Will only be used by pedestrians if it is situated<br />

appropriately on a desire line and does not require<br />

negotiating a large number of steps or ramps<br />

• Requires additional space for constructing a<br />

landing point and approach ramp<br />

• May pose a personal security risk if not well-lit<br />

or with adequate surveillance<br />

Figure 164: A footbridge in Queen Elizabeth<br />

Olympic Park in Stratford, London

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