Braunston Tunnel ft (2.13 m) beam boats to pass. There are three air shafts along its length. The tunnel passes underground alongside another Grand Union Canal feature, Drayton Reservoir, from which the feeder enters the canal at the east end of the tunnel. Braunston Tunnel Braunston Tunnel is on the Grand Union Canal about 830 yds (760 m) east of Braunston, Northamptonshire, England top lock. It is in the northern outskirts of Daventry, about 2 km east of the village of Braunston. Braunston Tunnel is 2,042 yards (1,867 m) in length. Built by Jessop and Barnes, the tunnel has no towpath and
Blisworth in 1852, probably close to the east side of the Towcester road. The ore was sent to an ironworks in Staffordshire. The ore was probably taken by horse and cart to the canal for despatch to the ironworks.Quarrying began seriously in 1853 or 1855 to the north of the road to Stoke Bruerne near the west end of the canal tunnel. The quarry was connected to the canal wharf by a tramway worked probably by hand and with a cable worked incline running through a bridge beneath the road and over a wooden bridge over the canal . At the