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Versatility as standard

Highway®

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.

D400 Highway installed in housing estate

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.

BS EN 124, CD 534 v0.1.0, Kitemark


The Highway range includes:

  • E600 double triangular manhole covers
  • D400 double triangular manhole covers
  • D400 HaloHinge manhole covers
  • D400 3 flange gully grates
  • D400 4 flange gully grates
  • D400 4 flange V gully grates
  • D400 surface boxes

Highway in numbers

Highway products sold in past 5 years.
Over 350,000
kilograms of Highway products installed in past 5 years
22million

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.

Skid resistance

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

HaloHinge

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.

The hard hat for your ironwork

Armadillo

Select Highway manhole covers are compatible with Armadillo, which prevents construction site traffic, including tracked vehicles, from damaging your ironwork, ensuring manhole covers and gully grates can start their service life in ‘as new’ condition.

A complete range of protector shells, Armadillo is designed to be easily placed over manhole covers and gully grates, providing enhanced protection during the construction phase while preventing the need for premature repairs and replacements.

Rapid frame raising system

Clicklift

Select Highway manhole covers are compatible with Clicklift, which eliminates the time and resources required to dig out and reinstall manhole frames to suit the final adoptable road surface. Eliminating the potential damage to manhole covers during construction, minimising disruption and removing the potential for residents claims for damage to their vehicles.

Clicklift provides housing developers and contractors 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.

Highway in action

Related case study

ClickLift saves housing development time and money

ClickLift has proven to be a huge success, after being installed as part of a £50m housing development in north east Scotland. The developers, family-run Guild Homes (Tayside) Ltd, have been so impressed that they have demonstrated the product to construction colleagues - and intend to use it in further developments.

Guild Homes (Tayside) Ltd
Guild Homes (Tayside) Ltd
Read the full Case Study
Related case study

Scotland’s first ever ClickLift installations

Wrekin has successfully completed five ClickLift™ installations as part of trials for two separate housing developments in Scotland, marking the first time the product has been used outside England. ClickLift™ raises Wrekin Highway and TriStar frames to suit the final surface layer without the need for digging out and re-installing.

Campion Homes, Tough Construction, Dawn Homes
Campion Homes, Tough Construction, Dawn Homes
Read the full Case Study