The crown of the arch is between 14 ft 9 in (4.50 m) and 18 ft (5.5 m) above the invert.
Width
Varies from 11 ft 6 in (3.51 m) to 13 ft 7 in (4.14 m)
Grade
Mostly 1 in 100 (1%) descending towards Midford (away from Bath)[1]
Combe Down Tunnel is on the now-closed Somerset and Dorset Joint Railway main line, between Midford and Bath Green Park railway station, below high ground and the southern suburbs of Bath, England, emerging below the southern slopes of Combe Down village.
Opened in 1874, this 1,829-yard (1,672 m) long disused railway tunnel was once the UK's longest without intermediate ventilation.[2] The tunnel now forms part of the £1.8 million Two Tunnels Greenway walking and cycling path opened on 6 April 2013 and is the longest cycling tunnel in Britain.[3] Its custodian is Wessex Water.
^"Two Tunnels Greenway". Twotunnels.org.uk. Archived from the original on 13 August 2014. Retrieved 15 September 2013.
^Yorke, Stan (2007). Lost railways of Somerset. Newbury: Countryside Books. pp. 48–60. ISBN 978-1-84674-057-2.
^"Bath Two Tunnels Circuit - Map". Sustrans. Retrieved 15 September 2013.
CombeDownTunnel is on the now-closed Somerset and Dorset Joint Railway main line, between Midford and Bath Green Park railway station, below high ground...
CombeDown is a village on the outskirts of Bath, England, in the Bath and North East Somerset unitary authority area, within the ceremonial county of...
suburb of Oldfield Park to the Devonshire Tunnel. It emerges into Lyncombe Vale before entering the CombeDownTunnel, and then coming out to cross Tucking...
3.25. An S & D locomotive 2-8-0 no 89 ran out of control from the CombeDowntunnel when the crew were overcome by fumes. The loco crashed into the goods...
coordinates) This is a list of road, railway, waterway, and other tunnels in the United Kingdom. A tunnel is an underground passageway with no defined minimum length...
slopes of CombeDown village. It opened in 1874 and was named after the road called Devonshire Buildings which lie immediately above the tunnel. It now...
conditioning unit, which was installed at ground level, and the air piped down into the tunnel. During 1 and 2 March the wreckage of the second carriage was cut...
CombeDown and Bathampton Down Quarries (grid reference ST761625) make up a 6.22 hectare (15.37 acre) Site of Special Scientific Interest (SSSI) in Bath...
lines. In each case, the "up" line is southbound towards London Euston; the "down" line is the northbound line towards Watford and Birmingham. The collisions...
was inevitable. The express caught the light engines just after Moorcock Tunnel near Aisgill summit in Mallerstang and was almost wholly derailed. Casualties...
Channel Tunnel fire of 18 November 1996 occurred on a train carrying Heavy Goods Vehicles (HGVs) and their drivers through the Channel Tunnel from France...
signal which, as far as the signalman could see, was still at Danger. He went down onto the track and saw that the arm of the Starting signal was slightly raised;...
evening, a West Anglia Great Northern station announcer was travelling on the down fast line and reported a "rough ride" at Potters Bar whilst going over that...
London. An InterCity 125 high speed passenger train (HST) failed to slow down in response to warning signals and collided with a freight train crossing...
was Quintinshill, where there were passing loops for both Up and Down lines. If the Down (northbound) loop was occupied, as it was on the morning of the...
New Bike Tunnel of Jerusalem". Retrieved 7 May 2018. Biking Dark Tunnels and Wide Lanes on a Lost Highway - The New York Times Bath's CombeDown railway...
On 7 December 1991, two trains collided inside the Severn Tunnel, between England and Wales. There were no fatalities but 185 passengers were injured....
people died and 46 were injured as a result of a rear-end collision in a tunnel, caused by driver error after a signal failure. This was the worst accident...
as it ran past it. The third vehicle was hit by the DBSO, as it fell back down the wall of the cutting, after rebounding from the trees. The DBSO and third...
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