Case Study – Hillingdon – Green Bridge and Moorhall Road Canal Bridge Assessment
Project Centre was commissioned by the London Borough of Hillingdon (LBH) to carry out the inspection and structural assessment of Green Bridge and Moorhall Road Canal Bridge to investigate the current bridge conditions and loading capacity due to the concerns of structure deteriorations.
Green Bridge is a 3-span bridge with an approximate overall length of 3.79m and width 16.7m which carries a single carriageway and two footways. Moorhall Road Canal Bride is a single span bridge with an approximate overall skewed length of 16.5m and width 16.43m with 21 degree skew and carries a single carriageway and footways. Both bridges have steel encased girders with reinforced concrete slabs which are simply supported by mass concrete abutments and piers.
The main objectives for the assessment were to determine the live load capacity and identify the potential strengthening and remedial works prolonging the life of the bridge. The bridges were assessed based on ‘Current on Site Condition’ by taking account of condition factors based on major findings of the Principal Inspection. In order to improve the rated load capacity and minimize the requirement for any strengthening works, the bridge deck has been analysed by a grillage model using structural analysis computer program Midas Civil.
Our scope of services included: Principal Inspection, preparing Approval in Principle (AiP), Structure Analysis and Assessment, CAT 1 Independent Check, preparing Assessment Report and Certificates.
We actively engaged with the key stakeholder London Borough of Hillingdon throughout the project.