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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