Five distinct methods of building-in continuity to composite precast pretensioned bridge decks in the United Kingdom were established from the data collection: Type 1 - Wide in-situ integral crosshead; Type 2 - Narrow in-situ integral crosshead; Type 3 - Integral crosshead cast in two stages; Type 4 - Continuous separated deck slab; Type 5 - Tied deck slab. The classification of the methods indicated that two make only the deck slab continuous or hinged over the piers whilst the other three provide full monolithic continuity connection of the beams and slab over the piers. A sixth method, designated as Type 6, was used. This method was put forward by Dr Jayanandana in 'Continuity development between precast beams using prestressed slabs' PhD Thesis, University of Leeds, 1989 (see IRRD 828506). It is based on the Type 2 method with the proposed variation that the deck slab is constructed in two stages. In this report these six methods are compared and evaluated. The comparisons cover: comparative costs; design and construction complexity; durability; aesthetics; ability to accommodate skew and plan curvature; and compliance with current UK design codes. The report also includes a synopsis and commentary on a recent US National Cooperative Highway Research Program (NCHRP) study entitled 'Design of precast prestressed bridge girders made continuous' (see IRRD 828391).

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