A solution for every scenario
Highway is our most versatile range of iron manhole covers and gully grates. With a vast variety of sizes and options available, we have a solution for even the most complex project.
All Highway products have been manufactured from highly durable, ductile iron to provide you with a quality, long lasting solution.
Fully featured and comprehensive range
Our Highway ironwork range is durable, reliable, simple to specify, easy to install and operate. We know from talking to our customers they value high quality products with straightforward ranges and support on hand to help select the right solution.
The range is a triumph of engineering, practicality and simplicity. Available in a variety of sizes and depths, Highway has been thoughtfully designed and engineered to be the easiest range of manhole covers, gullies and ancillary products to specify and install on the market
The range exceeds the most demanding standards and guidelines from national highway authorities and is fully compliant with the most rigorous specification standards, including CD 534 v0.1.0 (formerly HA 104/09), BS 7903 and BS EN 124:2015.
Highway Manhole Covers
Our largest range of manhole covers with various shapes, sizes and options available including our HaloHinge option to support with single person lifting.
Highway Gully Grates
The Highway range offers our most extensive variety of gully grates, including three flange, four flange and V gully grates.
Highway D400 Surface Boxes
Our Highway D400 surface boxes come with indexed covers, enlarged frame corners and are 70+ PSRV tested.
Meeting the needs of National Highways CD 534 v0.1.0 with Highway
National Highways has updated CD 534, a significant set of its requirements for manhole covers and gully grates installed on their road network. First released in February 2020 and updated to version 0.1.0 as of May 2022.
Frame flange area
CD 534 v0.1.0 now sets a minimum flange area of 190,000mm² for D400 and 285,000mm² for E600 covers, this equates to 2.1N/mm² as in HA 104/09.
Frame depth and weight
A 150mm frame depth is now required on motorways and all purpose trunk roads. A lower limit frame weight is also specified to ensure frames are stiff enough.
The WRc test mehod is now the only accepted test method for calculating skid resistance on raised chequer. This test measures a small tyre’s resistance to sideways slip caused by the cover surface.
D400 or E600
E600 manhole covers are to be installed in place of D400 covers where the Annual Average Daily Traffic (AADT) of light goods vehicles travelled on a road is greater than 1,500 in each direction.Check road traffic statistics for AADT
HINGE AND LIFT OUT
Highway HaloHinge manhole covers offer all the benefits of the Highway range with the additional benefit of the Hinge and Lift Out mechanism, allowing the covers to be hinged to 100° and also completely removed with standard BS 7903 lifting keys when required.
> 1,500 Annual Average Daily Traffic (AADT)?
With the introduction of CD 534 there were several key changes. This includes the requirement for E600 manhole covers to be installed in place of D400 covers where the Annual Average Daily Traffic (AADT) of light goods vehicles travelled on a road is greater than 1,500 in each direction.
As a "rule of thumb", most A roads will have an annual average daily traffic number over 1,500 light goods vehicles. Full traffic data can be found for many locations around the UK on the Government website.
Manhole cover frame raising system
Clicklift eliminates the time and resources required to dig out and reinstall frames to suit the final adoptable surface. This eliminates the potential damage to manhole covers during construction and removes the potential for residents claims for damage to their vehicles and massively reduces disruption. Clicklift provides housing developers with huge savings in terms of time, money and hassle. Allowing whole estates to have their covers raised to the final surfacing level, in as little as a few hours.
The hard hat for your ironwork
Armadillo is a complete range of protector shells, designed to be placed over manhole covers and gully grates to provide enhanced protection during the construction phase.
Armadillo provides protection from construction site traffic, including tracked vehicles, and can be easily removed when the final surfacing is completed. This ensures manhole covers and gully grates can start their service life in ‘as new’ condition to optimise longevity.
Whether you are looking for live project support, or are in the initial stages of specification, we are always on hand and happy to help.