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A66 shield
Traffic on the A66 road - - 1735922.jpg
Route information
Length115 mi (185 km)
Major junctions
From A595 in Workington
Major intersections M6
To A1053 in Grangetown
CountryUnited Kingdom
Keswick, Penrith, Brough, Scotch Corner, Darlington, Stockton-on-Tees, Middlesbrough
Road network
A65 A67

The A66 is a major road in Northern England, which in part follows the course of the Roman road from Scotch Corner to Penrith.[1] It runs from east of Middlesbrough in North Yorkshire to Workington in Cumbria.[2]


This sculpture on the roundabout near the start of the A66 east of Middlesbrough represents steel being poured
A66 elevated section in Middlesbrough with the Transporter Bridge in the background
A66 in Stockton-on-Tees, looking east
East of Darlington, the A66 passes the Brick Train sculpture
A66 just west of Scotch Corner junction with the A1(M), looking east
A66 just west of Scotch Corner junction with the A1(M), Scotch Corner Hotel in background
A66 at Bassenthwaite Lake in Cumbria, looking west
A66 at Bassenthwaite Lake in Cumbria, looking east
Eastbound view from Stainmore Cafe car park
Roman milestone on the former A66 route between Kirkby Thore and Temple Sowerby

From its eastern terminus between Redcar and Middlesbrough it runs past Stockton-on-Tees and Darlington mainly as two-lane dual-carriageway and single carriageway past Darlington, becoming motorway standard as the A66(M) shortly before meeting junction 57 of the A1(M). It shares the A1(M) route south to Scotch Corner, from where it continues west across the Pennines, past Brough, Appleby, Kirkby Thore, Temple Sowerby and Penrith until it reaches Junction 40 of the M6 motorway at Skirsgill Interchange, where traffic going towards Western Scotland turns onto the northbound M6. The A66 continues past Blencathra to Keswick and Cockermouth and on through the northern reaches of the Lake District before arriving at the coastal town of Workington. There is a short stretch of dual carriageway along the northern part of Bassenthwaite Lake between Keswick and Cockermouth. Whilst the eastbound section follows the straight line of the disused Cockermouth, Keswick and Penrith Railway, the westbound section has numerous bends with climbs and dips. The westbound section was closed due to flood damage in December 2015 and when it re-opened in May 2016 had been permanently reduced to a single lane. This section has a 50-mile-per-hour (80 km/h) limit monitored by average speed cameras.[3]


When road numbers were first designated in the 1920s,[4] the A66 was assigned to the route between Penrith and Hull via Scotch Corner and York, mainly along former Roman roads.[5] Today's route largely follows the original route between Penrith and Scotch Corner. The historic route between Scotch Corner and Hull follows what is now today's A1, A168, B6265, A59 and A1079.

It is anomalously numbered since west of Penrith it trespasses into numbering zone 5; this is because it originally terminated at the A6 in Penrith but was extended further west in order to create one continuous east–west route. Most of what is now the A66 west of Penrith was originally A594 – only a small stub of this road numbering remains, from Maryport to Cockermouth.

Proposed developments

Trans-Pennine dualling

The middle 49.5 miles (79.7 km) section of the A66 between Scotch Corner on the A1(M) and Penrith on the M6 forms one of the key trans-Pennines trunk routes and has one of the worst road-safety records in the UK. Various bypasses and upgrades have been constructed since the early 1970s, giving the current mix of single and dual-carriageway sections. In 2002, after many years of local campaigning, the Transport Minister, John Spellar, gave support for the upgrading of the remaining single-carriageway sections by the Highways Agency.[6] The first three projects began construction in early 2006 and opened in 2007[7] and 2008. The whole route between the A1(M) and M6 was due to be dualled by 2011, by which time the upgrade of the A1 to motorway status at Scotch Corner was planned to be complete.

After the construction of several sections commenced, it was announced that those schemes currently in the planning phase would not go ahead until 2016 at the earliest. The Highways Agency website states "Other than those already committed, the Regions did not identify any other major schemes for the A66 as high priorities to receive funding. This means that there is currently no likelihood of any additional major schemes on this route being funded within the next ten-year period. However the Regional Funding Allocation process will be reviewed in due course and this will give an opportunity for the Regions to revise their priorities."[citation needed]

In September 2015, the government said that £500,000 would be invested into the study of the two Trans-Pennine routes of the A66 and the A69. The proposal would be for one or even both roads to be dualled wholly between the A1/A1(M) and the M6.[8] The following year the government announced that the A66 would be dualled, but not the A69.[9] In March 2019, project director Matt Townsend from Highways England announced plans for a public consultation from May 2019, in which it would present its plans for a £500 million spend to complete dualling the Trans-Pennine section, together with improvements at the M6 and A1(M) interchanges.[10]

Section Start End Section Length (Miles) Dual-carriageway Notes
M6-A6 M6 J40 A6 0.7 Opened 1971
Penrith Bypass A6 Brougham 1.5 Opened 1971
Penrith-Temple Sowerby Brougham Winderwath 2.8 On hold
Temple Sowerby Bypass Winderwath Temple Sowerby East 2.6 Opened 2007
Temple Sowerby-Appleby Temple Sowerby East Crackenthorpe 4.4 On hold
Appleby Bypass Crackenthorpe Coupland 3.7 Opened by 1982
Warcop Bypass Coupland Brough West 4.4 On hold
Brough Bypass Brough West Brough East 2.0 Opened 1977
Brough-Stainmore Brough East Stainmore 1.0 Opened 1994
Stainmore Bypass Stainmore Banks Gate 2.4 Opened 1992
Bowes Moor Banks Gate Bowes West 8.7 Opened 1993
Bowes Bypass Bowes West Bowes East 1.1 On hold
Boldron Bypass Bowes East Cross Lanes 2.5 Opened by 1983
Cross Lanes-Greta Bridge Cross Lanes Greta Bridge West 1.6 On hold
Greta Bridge Bypass Greta Bridge West Greta Bridge East 1.5 Opened 1980
Greta Bridge-Stephen Bank Greta Bridge East Stephen Bank 2.3 Opened 2008
Stephen Bank-Carkin Moor Stephen Bank Carkin Moor 2.5 On hold
Carkin Moor-Scotch Corner (A1 M) Carkin Moor Scotch Corner (A1 M) 3.8 Opened 2007[5]

Additionally, a plan to create a second crossing of the River Tees near for traffic on the congested A19 road, would see the widening of the A66 between Teesside Park and the Tees Viaduct interchange.[11][12]


The section of road between Scotch Corner and Penrith accounted for 70 deaths over ten years up until 2002, which was above the national average for single lane carriageways.[6] Whilst the number of accidents was in line with the national average, the number of serious injuries and deaths was twice the national average; this high attrition rate was the reason for the go-ahead for the new dualled sections on the grounds of safety.[13]

Snow gates were installed on the road between Bowes and Brough.[14] This section is the moorland route over Stainmore summit which reaches a height of 1,450 feet (440 m) is prone to heavy snow in the winter.[15] Both sets of gates have turnaround facilities to allow all traffic to change direction.

Accidents and incidents


A66(M) shield
Route information
Maintained by National Highways
Length2.0 mi (3.2 km)
Major junctions
Major intersections
A1(M) motorway
CountryUnited Kingdom
Road network
A64(M) A74(M)

The A66(M) is a spur from the A1(M) at Junction 57. It was opened in 1965 along with the A1(M) as part of the Darlington by-pass motorway.[17] It can be accessed only by northbound traffic on the A1(M) and has an exit to this route southbound only.


County Location mi km Junction Destinations Notes
North Yorkshire Darlington 0 0 [coord 1] A1(M)  - The South, Scotch Corner No entrance to A1(M) Northbound, no entrance from A1(M) Southbound
2.2 3.5 [coord 2] A66  - Darlington, Teesside Airport
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
Coordinate list
  1. ^ 54°30′00″N 1°37′38″W / 54.4999°N 1.6273°W / 54.4999; -1.6273 (Junction 57 of the A1(M))
  2. ^ 54°30′32″N 1°35′10″W / 54.5090°N 1.5860°W / 54.5090; -1.5860 (Blackwell Roundabout)


  1. ^ Map of Roman Roads in Britain
  2. ^ "A66 - Roader's Digest: The SABRE Wiki". Retrieved 1 November 2015.
  3. ^ "Safety Cameras to Improve A66 Safety" (Press Release). Highways Agency. 2 February 2010. Archived from the original on 7 July 2012. Retrieved 1 November 2015.
  4. ^ "Guidance on Road Classification and the Primary Route Network" (PDF). UK HMG. p. 3. Retrieved 1 November 2015.
  5. ^ a b "A66 Carkin Moor to Scotch Corner Improvement - One Year After Study" (PDF). Highways Agency. p. 8. Archived from the original (PDF) on 4 March 2016. Retrieved 1 November 2015.
  6. ^ a b "Environment warning over road plan". BBC. 23 August 2002. Retrieved 1 November 2015.
  7. ^ "CBRD » Road Schemes » A66 Dualling Scotch Corner - Stephen Bank". Archived from the original on 4 March 2016. Retrieved 1 November 2015.
  8. ^ "Northern Powerhouse study to look at dualling whole of A66 and A69". nechronicle. Retrieved 1 November 2015.
  9. ^ Michael Muncaster (23 November 2016). "Why are plans to dual the A66 over the A69 going ahead? We look at what impact it will have". Evening Chronicle. Newcastle.
  10. ^ Graeme Hetherington (7 March 2019). "Consultation due to start in May on A66 changes". The Northern Echo. Retrieved 8 March 2019.
  11. ^ "Plans revealed to reduce crossing pressure". BBC News. 13 March 2019. Retrieved 15 July 2020.
  12. ^ Nolan, Laura (22 May 2020). "£24m committed to Tees Crossing". Darlington & Stockton Times. No. 21–2020. p. 5. ISSN 2516-5348.
  13. ^ "Carkin Moor to Scotch Corner Improvement - One Year After Study" (PDF). Highways Agency. p. 23. Archived from the original (PDF) on 4 March 2016. Retrieved 1 November 2015.
  14. ^ "Cumbria's A66 route has snow gates installed". BBC News. Retrieved 1 November 2015.
  15. ^ "Hundreds trapped in A66 snow chaos". The Northern Echo. Retrieved 1 November 2015.
  16. ^ "Three killed in school bus crash in Cumbria". BBC News. BBC. 24 May 2010. Retrieved 1 November 2015.
  17. ^ "The Motorway Archive – A1(M) & A66(M) The Darlington By-Pass motorway Dates Page". Archived from the original on 14 March 2007. Retrieved 14 October 2006.

54°31′49″N 2°15′35″W / 54.53021°N 2.25971°W / 54.53021; -2.25971