CHAPTER XVI.

RECONSTRUCTION AND WIDENING OF BRIDGES.

CONCLUSION.

Measuring up--Railway under-bridges--Methods of reconstruction in common use--Reconstruction of bridges of many openings--Timber staging--Traffic arrangements--Sunday work--Railway over-bridges-- Widenings--Junction of new and old work--Concluding remarks--Study of old bridgework 172

INDEX 187

THE ANATOMY OF BRIDGEWORK.