Concrete crossing bearers a review of development work involving the R & D division (TM-TS-091)

This report was requested by the R & D Working party for "Precast concrete/asphalt S & C Work with Improved Rail Steels" - ref Minute 21.3 of meeting 20 March 1978, British Railways interest in prestressed concrete crossing bearers dates from 1964 but designs did not materialise until 1966...