M65 road noise: how it affects nearby properties
The M65 threads through the East Lancashire towns from Preston to Colne, running remarkably close to dense terraced and suburban housing in Blackburn, Accrington and Burnley. Because the motorway was driven through established urban areas, an unusually high number of homes sit within a short distance of the carriageway.
Traffic on the M65: what the 2025 DfT counts show
Not one of the M65's 24 count points falls below 12,705 vehicles a day, which is unusual for a motorway with so many readings. Seventeen of them exceed fifty thousand and none passes a hundred thousand. The median is 59,300, the lower quartile 46,000 and the upper quartile 65,300, so the middle half of readings spans a modest range. At the top the ninetieth percentile is 75,400 and the maximum 86,935. The picture is of a road that is consistently loaded from end to end, with no truly quiet stretch among the points counted and no extreme peak either.
Flow along the M65 is nearly level, which makes the terrain the interesting part. The western six points have a median of 57,800 vehicles a day, the middle seven 60,700 and the north-eastern eleven 58,300, with the busiest reading, 86,935, in the middle third. Built piecemeal between 1981 and 1997, the road crosses the Lostock valley on the Cuerden embankment, passes south of Blackburn with a sharp turn at J6 (Whitebirk), and in the eastern sections follows the East Lancashire railway and the Leeds and Liverpool canal over former industrial land where it replaced the A56 through Brierfield and Nelson.
Lorries are a low and fairly even part of the M65's traffic. The median is 5.4 per cent, the ninetieth percentile 7.6 and the highest count point 9.8, so no reading reaches 10 per cent. The lowest is 2.9. With such a narrow band, the exact choice of count point alters the lorry assumption very little, and the indicative levels simply use 5.4. What varies between addresses is overwhelmingly distance and shelter, not lorry mix.
| Quarter of points carry under | 46,000 vehicles/day |
|---|---|
| Median point | 59,300 vehicles/day |
| Three-quarters carry under | 65,300 vehicles/day |
| Busiest tenth carry over | 75,400 vehicles/day |
| Busiest single point | 86,935 vehicles/day |
The M65 on the ground
- About 26 miles long, from Bamber Bridge near Preston to Colne in Lancashire, with junctions numbered 1A to 14. en.wikipedia.org
- Built piecemeal from 1981 to 1997: Burnley to Brierfield opened in 1981, Nelson to Colne in 1988, and Preston to Blackburn in December 1997. ukmotorwayarchive.ciht.org.uk
- The 13-mile Preston to Blackburn length included the Cuerden embankment across the Lostock valley, and bridges were built wide enough for later three-lane widening. roads.org.uk
- A route through central Blackburn was dropped; the motorway instead passes south of the town, creating a sharp turn at J6 (Whitebirk). roads.org.uk
- The eastern sections follow the East Lancashire railway and Leeds and Liverpool canal over former industrial land, and replaced the A56 through Brierfield and Nelson. ukmotorwayarchive.ciht.org.uk
- A short single-carriageway spur near the M61 interchange (Walton Summit) is run under motorway rules at 70mph, with an uphill overtaking lane. roads.org.uk
How loud is the M65, and how fast does it fall away?
On open, flat ground the M65 table starts at 78 dB Lden for a house 20 m back from the carriageway under the typical 59,300 vehicles a day, against 79 on the busier 75,400. A single decibel separates the two cases at every distance: 75 and 76 at 50 m, 73 and 74 at 100 m, 70 and 71 at 200 m. These come from a 70 mph, 5.4 per cent lorry calculation with no cuttings, buildings or fences, so they are a plain-site baseline rather than a forecast. In East Lancashire's terraced streets a cutting may shelter one house while an embankment exposes the next.
| Flow | 20 m | 50 m | 100 m | 200 m |
|---|---|---|---|---|
| Typical section (59,300 vehicles/day) | 78 | 75 | 73 | 70 |
| Busiest tenth of sections (75,400+ vehicles/day) | 79 | 76 | 74 | 71 |
Areas near the M65
Passing through: Lancashire.
Terraced streets and estates in Blackburn, Burnley and Nelson border the route closely, and elevated and cutting sections create sharply varying local conditions. AcoustaPlot calculates a terrain-aware road level for your address, which is especially relevant here where a cutting can shelter one street while an embankment exposes the next.
Recent on the M65
A £30 million scheme to widen junction 5 of the M65 at Blackburn — enlarging the roundabout and slip roads to ease congestion — started construction in January 2025, funded jointly by central government and Blackburn with Darwen Borough Council.
How AcoustaPLOT assesses M65 noise for your property
On the M65, AcoustaPLOT looks for one of the 24 DfT count points on this same motorway within 8 km along it, which across a 33 km road leaves most addresses close to a reading. That measured flow and lorry share go into the calculation along with the actual distance, the cutting or embankment profile, ground, rows of terraced housing, barriers and other roads or rail nearby. Because the motorway runs through established urban areas, buildings in the way can matter as much as the traffic count. It reports the day-evening-night (Lden) and night-time (Lnight) levels at your facade, and reads Defra's mapped value for any railway noise where available.
Check my property near the M65 →
M65 noise: common questions
Is there any genuinely quiet stretch on the M65?
Not among the count points. The lowest of 24 readings is 12,705 vehicles a day, no point is under ten thousand, and 17 are above fifty thousand. The thirds along the road have medians of 57,800, 60,700 and 58,300. So whatever shelter an individual house enjoys comes from where it stands, not from the road being lightly used in that section.
Does the Blackburn junction 5 widening affect the M65 figures?
A £30 million scheme to enlarge the roundabout and slip roads at junction 5 started construction in January 2025, funded by central government and Blackburn with Darwen Borough Council. The traffic counts used here are 2025 measurements and cannot reveal what the scheme changes. It would be guesswork to say whether any home nearby will see more or less traffic.
Which third of the M65 has the highest single count?
The middle third holds the highest reading, 86,935 vehicles a day, and also the highest median at 60,700 across seven points. The western third peaks at 76,797 and the north-eastern third at 83,409. The differences are small compared with the road's size, so flow will not be what separates one address from another.
What would a house 200 m from the M65 expect on open ground?
Reading the table at 200 m gives 70 dB Lden for the typical 59,300 vehicles a day and 71 dB for the busier 75,400, assuming flat open land, 70 mph and 5.4 per cent lorries. Terraced streets, cuttings and embankments mean the real figure for an actual address can be quite different from these baseline numbers.