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The main piers, on which rest the iron frames, are to be of brick faced withstone toothing into the brickwork, alternately to the depth of 2 feet and 2 feet6 inches.

The faces of these piers are broken by stone pilasters, standing forward9 inches from the general face; the whole is carried to a height of 4 feet 6 inchesabove the surface of the roadway, and is crowned by a large stone cap, whichmust be formed of a single stone.

A course of Bramley Fall stone, 2 feet deep, and bedded in the brickwork3 feet 6 inches, runs along the whole length of the pier at the part where theiron frames rest.

N one of the stone forming this course are to be less than 3 feet long; andthey are to be firmly dowelled together and cramped on the top with 2 wrought-iron cramps to each joint, 1 square inch in section, 14 inches long, and leadedinto the stones to the depth of 3 inches.

A brick wall, 3 feet thick, is to be built between the ribs up to the level oftheir tops.

The arches on the slopes are of brick, 8 feet span on the square, and 1 foot6 inches thick, with stone quoins or voussoirs on the face, toothing into the brick-work alternately to the depth of 2 feet and 2 feet 6 inches.

The whole of the arches must be laid with spiral courses at right angles tothe face.

A solid backing of brickwork must be carried up to the height shown by thedotted lines.

The arches rest on brick piers, faced with stone to the depth alternately of2 feet and 1 foot 6 inches ; they are to have stone imposts, as shown, from whichthe arches spring.

The wing-walls begin to batter at the rate of 1 inch per foot at the set otf,shown on drawings ; they are stepped up the slopes in the manner show r n by thedotted lines, and are carried out to the edge of the cutting, where they end inpilasters of | brick projection, and are crowned with caps of stone 9 inches deep inthe middle.

A torus moulding of stone, and a brick plinth of the exact form and dimen-sions of that specified over the iron ribs, runs along the whole extent of thisbridge.

The torus must return round the pilasters, and the corners must in every casebe formed of whole stones cut to the proper form.

All the castings of this bridge must be of No. 1 iron,, and the malleable ironmust be of the best scrap iron.