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Table 2 Summary of ‘do minimum’ and Thames Hub Vision infrastructure elements

From: Introducing system interdependency into infrastructure appraisal: from projects to portfolios to pathways

Asset [and Infrastructure Service(s)]

Scenario

Construction

Prerequisites/Constraints

Expanded Heathrow [Transport (air)]

Do minimum

Planned delivery by 2026

Mutually exclusive to Thames Hub Vision airport

TE2100 flood protection measures [Water (flood)]

All (with restrictions)

Plan until 2170; barrier delivery by 2070

Benefits negate/negated by Thames Hub Vision barrier

High Speed 2 [Transport (rail)]

All

Planned delivery by 2032

Non assumed

Lower Thames Crossing [Transport (road)]

All

Under consultation

Non assumed

Crossrail [Transport (rail)]

All

Planned delivery by 2019

Non assumed

Thames Hub Vision road upgrades [Transport (road)]

Thames Hub Vision scenarios

Planned delivery by 2014

Some road upgrades necessary to allow construction of other Thames Hub Vision elements

Thames Hub Vision barrier [Transport (road and rail), Energy (generation), Water (flood)]

Thames Hub Vision scenarios

Planned delivery by 2015

Requires some road upgrades, prerequisite for rail orbital; flood benefits negate/negated by TE2100 barrier

Thames Hub Vision rail orbital [Transport (rail)]

Thames Hub Vision scenarios

Planned delivery by 2019

Requires some road upgrades and barrier

Thames Hub Vision airport [Transport (air)]

Thames Hub Vision scenarios

Planned delivery by 2028

Requires some road upgrades for construction; requires barrier crossing and either the rail orbital or major road upgrades to operate at full capacity; mutually exclusive to Thames Hub Vision airport