Better information for your journey
The National Traffic Control Centre collects real-time information on road conditions.
The Project Control Framework
On 1st April 2008 we launched the Project Control Framework. The Framework sets out how we, together with the Department for Transport, manage and deliver major improvement projects.
Traffic news on your desktop
Helpful ways to access the latest traffic information when you need it.
A19 Dishforth to Tyne Tunnel
Feasibility Study
5 Scheme Costs
5.1
5.1.1 The rates used for calculating the scheme costs have been obtained from Spon's CivilEngineering and Highway Works Price Book and from analysis of Alvaston Bypasstender prices. The costs for various items of the works were also compared with theschedule of costs for the construction of the A1 Rainton Crossroads scheme providedby the Highways Agency.
5.1.2 The rates obtained from the various sources were adjusted using the December 2004ROADCON indices to bring all prices to the fourth quarter 2003 (4Q03). The 4Q03 isthe latest firm index quoted in ROADCON and has a value of 119. For land andcompensation costs, a rate was assessed based on experience on a recent ruralscheme. As no enquiries were made to the District Valuer, there is an element of riskwith the rate, which is covered by the Optimism Bias. For entry into COBA the value ofRPI used was 182.9 (4Q03).
5.1.3 No specific risk analysis was made of the cost information so the Adjustment Factor forOptimism Bias applied to the estimates is the value without risk assessment. From theShort PAR Guidance Version 3.2 Table C1, the scheme type is assessed as being astandard lesser highway scheme <£5 million requiring land acquisition and orders. Thestage of preparation is conception, giving an Optimism Bias value of 45%.
