The
parliamentary bill permitting its construction was passed in 1791 as the '
(31 Geo. 3. c. 59) empowering the company to raise £180,000 (equivalent to £ in ), through 1,800 shares at a cost of £100 each. It also allowed them to raise a further £70,000, if needed, amongst themselves or by the mortgage of tolls and rates. The act also permitted the company to allow landowners on the line to build wharfs and wharfhouse, and if they refuse to, the company are allowed to if needed. A further act of Parliament, the (38 Geo. 3. c. xxxi), authorised the raising of £149,929 amongst themselves or through the creation of new shares. However, the company were unable to raise the full amount of money authorised by the second act, and so another, the (44 Geo. 3. c. xxxv), was passed allowing them to raise £49,680. Another act, the (48 Geo. 3. c. xlix) was passed to obtain more money. This act empowered the company to raise £168,000 through the creation of 4,200 shares at £40 each. A final act, the ' (
55 Geo. 3. c. lxvi), was passed after the company had purchased land for reservoirs, which was not permitted in the previous acts. The act permitted the company to sell the land and to pay a debt of £29,096 (equivalent to £ million in ), to the treasurers by 29 September 1815 as well, otherwise it would be taken out of the proceeds raised from selling the land. The canal was surveyed by
Josiah Clowes and
John Snape. Its engineers changed often, and included
Thomas Cartwright, John Woodhouse and
William Crosley. Construction of a double barge-width (14 ft) canal began in 1792 from the Birmingham end, but progressed slowly.
Selly Oak was reached in October 1795 and
Kings Norton Junction by May 1796, meeting the new
Stratford-upon-Avon Canal which had by then reached
Hockley Heath. By March 1797 the
Wast Hills Tunnel was open and the canal was trading to
Hopwood. In 1807 the canal reached
Tardebigge without the use of locks. From
Worcester Bar to
Tardebigge top lock, the canal is at the
453 ft Birmingham Level. The cost of building locks was too great so the 56 locks down to Worcester were built to the narrow specification, with the final two locks connecting to the Severn in Worcester being to allow river craft access to
Diglis Basin. The final 16 miles (26 km) was opened in December 1815. Plans to construct basins at Lowesmoor and
Diglis were carried out eventually. The
Dudley Canal Line No 2 was built through the
Lapal Tunnel to meet the canal at Selly Oak in 1798. After repeated collapses, the tunnel was finally abandoned in 1917 leaving a short stretch navigable between Selly Oak and a brick works at California until 1953, after which it was drained and filled in. A campaign group, the Lapal Canal Trust, is working to restore it, with a diversion around the tunnel. A major user of the canal was the
Cadbury chocolate factories at
Bournville and Blackpole, Worcester. ==Birmingham terminus==