Accurate corridor data for the programmes that keep the North West moving.

Roads & Highways Surveying

Highways survey in the North West is not a standard construction survey challenge. Live carriageways, tight access windows, multiple statutory undertakers with conflicting utility records, Traffic Management Orders, Highways England framework requirements and public safety obligations — all before the design team has the data it needs to progress the scheme. The survey firm on a highways programme is not a preliminary supplier. It is the first link in the design chain. Get the data wrong and every subsequent decision in the design is built on a false foundation.

Site Surveying Services delivers roads and highways survey across Lancashire, the North West and nationally — for Highways England Area 10 supply chain contractors, local highway authorities, active travel consultants, transport engineers and major civils contractors. We hold Constructionline Gold, PAS 128 accreditation and RICS regulation. We operate the CHCNAV AU20 Mobile Mapping System — the survey methodology that has transformed what is possible on live highway corridors. And our directly employed setting-out engineers have delivered over 600 site engineering programmes in 2025 alone.

Environmental & Energy
Public Sector & Services
Defence & Justice
Rural & Agriculture
Bathymetric & Hydrographic
Commercial & Retail
Architecture & Project Management
Heritage & Cultural Restoration
Industrial & Logistics
Housing & Development
Infrastructure, Roads & Highways
Demolition & Remediation
Construction & Civil Engineering
The Challenge:

Surveying for Roads & Highway Projects

Infrastructure projects operate in fast-paced, high-stakes environments where accuracy, coordination, and safety are non-negotiable.

Whether it’s a highway upgrade, bridge rehabilitation, or airfield resurfacing, every decision depends on reliable spatial data. Even the smallest error in levels, alignment, or utilities can lead to costly rework, construction delays, and compromised safety. Surveying partners must work seamlessly alongside contractors and engineers, providing data that performs under pressure and ensures that progress on the ground matches precision in design.

Why Accuracy Matters...

Accurate, dependable survey data keeps infrastructure projects on time, compliant, and within budget, allowing clients to:

Build safely

ensuring works are delivered within strict tolerances and safety margins.

Minimise disruption

reducing rework, traffic management time, and site revisits.

Deliver design confidence

aligning construction precisely with engineering models and design intent.

Meet regulatory compliance

ensuring geometric and spatial standards are achieved.

Futureproof infrastructure

providing datasets that support long-term maintenance and upgrades.

Innovation in Action

Infrastructure surveying demands accuracy and adaptability.

By combining traditional engineering expertise with advanced technologies like mobile scanning, UAV LiDAR, and automated 3D modelling, we capture vast, complex sites in record time while maintaining exceptional precision.

This innovation translates to fewer site visits, faster decision-making, and data that stands the test of time – vital for projects with long operational lifespans.

The Brief As part of a major facility expansion at the BAE Systems site in Barrow-in-Furness, Site Surveying Services was commissioned to deliver a comprehensive PAS 128 Quality Level A …

This drone photogrammetry survey was carried out using a  DJI M300 drone for a long standing client. The survey compliments a measured building and topographical survey to highlight features not …

The roads and highways sector in the North West

The North West carries one of the most active highways investment programmes in England:

Highways England Area 10

The North West’s Highways England investment region covers the strategic road network from the Scottish border to the Midlands. Major improvement schemes, smart motorway maintenance, junction improvements and structures programmes all generate sustained survey demand across the region.

Lancashire County Council and local highway authorities

LCC, the Greater Manchester Combined Authority, Cumbria County Council and district highway authorities across the North West all commission survey for local improvement schemes, public realm works, drainage improvement, resurfacing programmes and active travel investment.

Active travel investment

Sustained national and local government investment in cycling infrastructure, pedestrian improvements, school streets and active travel routes across Lancashire and Greater Manchester is generating highway corridor survey demand on urban streets, bridleways and rural routes.

Road improvement and dualling schemes

Strategic A-road improvement schemes across Lancashire, Cumbria and the wider North West require topographic survey, PAS 128 utility mapping, setting-out and as-built survey throughout the design and construction programme.

Developer-funded highway works

Section 38, Section 278 and Section 106 highway works associated with housing and commercial development across the North West require survey from pre-application through to adoption.

Project Types We Support

Strategic road improvement survey

topographic survey, PAS 128 utility mapping, control network and setting-out for major road improvement and dualling schemes on the strategic and local road network. Long corridors, multiple access constraints, sustained programme presence.

Active travel and cycling infrastructure survey

highway corridor survey for cycling and walking route design. Mobile mapping for rapid data capture on urban streets with minimal disruption. Footway widths, kerb lines, crossing points and carriageway geometry captured in a single pass.

Junction survey and appraisal

detailed topographic survey, visibility splay measurement and road geometry capture for junction improvement schemes and transport assessments. Our mobile mapping capability captures complete junction geometry — including all approach arms, lane markings, signal positions and street furniture — in a single survey operation.

Highway drainage survey

topographic survey capturing drainage channels, gully positions, culvert inlets and outlets, drainage falls and existing drainage infrastructure for highway drainage design and maintenance. CCTV drainage survey for underground drainage condition assessment.

Developer-funded highway works

S38, S278 and S106 highway survey from pre-application through to adoption. Topographic survey, PAS 128 utility mapping before any excavation, setting-out engineers for carriageway construction, and as-built survey for highway adoption.

Port and maritime survey

mobile mapping for highway network condition surveys, asset inventory, carriageway geometry and feature capture across local authority road networks. Regular repeat surveys tied to the same control network for change detection and network deterioration tracking.

Highway structures survey

topographic survey, laser scanning and bathymetric survey of highway bridges, culverts, retaining walls and highway structures for condition assessment and refurbishment design.

Public realm and streetscape improvement

topographic survey for public realm improvement schemes, town centre pedestrianisation, market square redesign and street enhancement. Mobile mapping for rapid existing conditions capture on live urban streets.

Who We Work With in the infrastructure Sector

Highways England Area 10 supply chain

Principal contractors and specialist contractors delivering major road improvement, smart motorway and junction schemes on the NW strategic road network. We hold Constructionline Gold and understand the Highways England supply chain requirements.

Lancashire County Council and local highway authorities

Surveying for local improvement schemes, active travel routes, public realm and drainage across the Lancashire highway network and equivalent authorities across the North West.

Transport consultants and transport planners

Topographic survey, visibility splay measurement, road cross-sections and mobile mapping data for transport assessments, junction appraisals and transport planning submissions.

Active travel design consultants

Corridor survey for cycling and walking infrastructure design, including mobile mapping for rapid, low-disruption data capture on live urban streets.

Civils contractors on developer-funded highway works

Setting-out, control networks, topographic survey and as-built survey for S38, S278 and S106 highway schemes.

Drainage and highway drainage engineers

Topographic survey, drainage feature capture and CCTV drainage survey support for highway drainage design and maintenance.

survey setting out points mapped along road junction for highway construction and infrastructure surveying services

Our Services

Using LiDAR, UAVs, and hydrographic drones to capture precise data in challenging environments.

Why choose site surveying services

On site. On spec. On time.

fast turnaround

Get a quick quote and a survey team prepared for instruction. When the programme window opens, we're ready.

PAS 128 Accredited

British Standard utility mapping. Quality Level B means physical verification of every service - not just surface evidence.

Lancashire-Based

Headquartered in Clitheroe. We know the North West - the sites, the contractors, the programmes. Local knowledge backed by national capability.

Programme-Critical

Data that works in your environment from day one. BIM to your EIR. CAD to your spec. No reprocessing. No delays to the design team.

Frequently Asked Questions

What survey is needed for a highway improvement scheme?

A typical highway improvement scheme requires topographic survey of the corridor and surrounding area at preliminary design stage — ground levels, drainage, boundaries, services at surface level and all highway features. PAS 128 utility mapping at Quality Level C for the full corridor at preliminary design stage and Quality Level A at critical crossings and structure positions before construction. Control network installation before construction begins. Setting-out engineers for carriageway construction. As-built topographic survey at completion for highway adoption and planning condition discharge. We advise on the right survey scope and programme for your specific scheme at the time of enquiry.

Mobile mapping is vehicle-mounted survey — a CHCNAV AU20 system combining LiDAR, panoramic cameras, GNSS and an IMU, capturing a 360° point cloud and photographic record of the highway corridor at road speed. It achieves 5mm accuracy from a moving vehicle, captures 2 million points per second and requires minimal traffic management. For highway corridor survey on live carriageways, mobile mapping is significantly faster, significantly safer and produces a richer dataset than any static survey methodology. It is the methodology we recommend for most highway corridor surveys in the North West.

Developer-funded highway works under Section 38 or Section 278 agreements typically require topographic survey at pre-application stage to support the highway design, PAS 128 utility mapping before any highway excavation, setting-out engineers for carriageway and drainage construction, and as-built topographic survey at completion for the highway authority’s adoption records. The as-built survey specification should be agreed with the adopting highway authority before construction begins — we advise on LCC and North West local authority requirements at the time of instruction.

We take sightline measurements at the correct measurement point, eye height and object height for the design speed of the road — in accordance with the relevant design standard (Manual for Streets, DMRB or local authority guidance as applicable). Obstructions within the visibility splay are recorded and flagged. Drawings are produced at a scale that clearly demonstrates whether the required sightlines are achieved. The transport consultant can work directly from our survey data and drawings without additional processing.

With mobile mapping — yes, in most cases. The CHCNAV AU20 surveys the corridor from a moving vehicle at road speed, requiring minimal traffic management rather than a full lane closure. For specific survey activities that require static access — vacuum excavation test points for PAS 128 QLA, precise spot level checks, drainage feature capture in confined areas — targeted closures may be required at specific locations. We produce a traffic management plan for every highway survey that minimises closure requirements and protects personnel and road users.

Quality Level C — active detection of all services using GPR and EML — across the full highway corridor at preliminary design stage. Quality Level A — physical verification at test points using vacuum excavation — at critical locations: service crossing points, utility diversion positions, structure foundations and any location where the design cannot afford uncertainty about what is underground. This combination provides comprehensive coverage across the corridor while focusing the highest standard where it matters most. We advise on the right quality level distribution for your specific scheme at the time of instruction.