Marine & Coastal Civil Engineering and Groundworks by TWL Groundworks Ltd

Delivering Reliable Solutions for Shoreline and Waterside Construction Projects

Working in marine and coastal environments requires more than just traditional groundworks. It demands precision, resilience, and experience with challenging terrain and environmental conditions. At TWL Groundworks Ltd, we’re proud to provide a specialist service in marine and coastal civil engineering and groundworks across Somerset, North Somerset, Bristol Channel areas, South Wales and beyond.

Whether it’s supporting harbour infrastructure, stabilising coastal embankments, or delivering drainage and flood defence systems, we provide safe, effective and engineered solutions that protect, preserve, and support vital coastal projects.

Table of Contents

1. What Are Marine and Coastal Civil Engineering Services?

2. Challenges of Working in Marine Environments

3. TWL Groundworks' Marine & Coastal Services

4. Coastal Groundworks Expertise

5. Drainage, Flood Protection & Erosion Control

6. Shoreline Retaining Walls & Revetments

7. Working with Environmental Standards

8. Why Choose TWL Groundworks?

9. FAQs

1. What Are Marine and Coastal Civil Engineering Services?

Marine civil engineering refers to construction and groundwork in, around, or adjacent to bodies of water—typically coastal regions, estuaries, and harbours. These services are essential for protecting land from erosion, managing tidal flow, and building infrastructure that supports tourism, logistics, and public services.

TWL Groundworks offers tailored marine and coastal services to support:

• Coastal infrastructure development

• Marine groundworks and foundations

• Drainage and flood management systems

• Reinforcement of waterfronts and seawalls

• Construction access along coastal routes

2. Challenges of Working in Marine Environments

Marine and coastal works pose unique challenges:

• Tidal fluctuations

• Unstable soil conditions

• Environmental and wildlife protection regulations

• Weather exposure and erosion risks

• Logistical access issues

TWL Groundworks has the experience and equipment to navigate these complexities, ensuring projects are completed safely, efficiently, and to the highest environmental standards.

3. TWL Groundworks’ Marine & Coastal Services

Here’s a full breakdown of our coastal and marine construction and groundwork services:

Core Services:

• Coastal ground stabilisation

• Seawall and embankment works

• Tidal flood protection

• Revetment systems and rock armour

• Drainage and surface water control

• Retaining wall construction

• Marine foundation works

• Marine access roads and causeways

• Underground service installation near waterlines

4. Coastal Groundworks Expertise

We provide full groundworks solutions for seaside developments, including:

• Excavation, trenching and preparation

• Concrete slab and strip foundations

• Hard landscaping on sloped or eroded coastal ground

• Sub-base construction for boat yards, slipways, and marine facilities

Whether it’s a private marine property or a commercial infrastructure project, our civil groundworks ensure your coastal development is safe, durable, and future-proofed.

5. Drainage, Flood Protection & Erosion Control

Protecting coastal land from flooding, ground movement, and erosion is essential. We install:

• Stormwater drainage

• Sustainable Urban Drainage Systems (SuDS)

• Soakaways and overflow channels

• Flood barriers and bunds

• Gabion baskets and geo-grid reinforcement

Every system we install is tailored to handle coastal water load and movement, preventing long-term degradation and surface instability.

6. Shoreline Retaining Walls & Revetments

TWL Groundworks builds and reinforces shoreline defences such as:

• Wet and dry stone retaining walls

• Concrete and precast sea walls

• Revetments (sloped rock structures)

• Pile-supported marine retaining systems

These solutions provide vital protection against tidal surges and soil erosion, as well as enhancing the appearance and value of waterfront properties.

7. Working with Environmental Standards

We understand the importance of working responsibly in sensitive marine habitats. That’s why TWL Groundworks strictly adheres to:

• Marine Management Organisation (MMO) guidelines

• Environment Agency permitting

• DEFRA regulations on coastal works

• Protected habitat safeguarding

Our team takes care of all regulatory compliance, method statements and risk assessments, ensuring your project meets every standard required for safe, eco-conscious delivery.

8. Why Choose TWL Groundworks?

• ✅ Experienced in live marine and substation environments (OPSB1 & OPSB2 certified)

• ✅ ConstructionLine Gold, CHAS & Achilles BuildingConfidence accredited

• ✅ Trusted by contractors across Somerset, South West and South Wales

• ✅ Family-run company with a reputation for quality and accountability

• ✅ Fully equipped for specialist groundworks in challenging terrain

Whether your site is exposed to coastal winds, sits on unstable shoreline ground, or requires flood mitigation, TWL Groundworks delivers tailored solutions that perform under pressure.

9. Frequently Asked Questions (FAQs)

Q1: Can you work around tidal restrictions and marine access times?
A: Yes, we plan our operations around tidal cycles and restricted timeframes to safely deliver coastal and intertidal projects.

Q2: Do you handle permitting and environmental approval?
A: Absolutely. We handle all required applications for marine and coastal works in line with local and national regulations.

Q3: What types of retaining walls are best for coastal areas?
A: Depending on ground and tide conditions, dry stone, reinforced concrete, or revetments are used to retain soil and prevent erosion.

Q4: Can you install drainage systems on a sloped coastal site?
A: Yes, we specialise in creating effective drainage solutions for sloped or unstable ground in high-risk flood or erosion zones.

Q5: What coastal areas do you serve?
A: We operate throughout Somerset, Weston-super-Mare, North Devon, South Wales, the Bristol Channel, and surrounding coastal regions.

Ready to Start a Coastal Project?

TWL Groundworks is your trusted marine and coastal civil engineering partner. From shoreline reinforcement to waterfront groundworks, we ensure your build is secure, sustainable, and completed to the highest standard.

Get in Touch:

📍 Visit: https://www.twlgroundworks.co.uk
📧 Email: twlgroundworks@gmail.com
📞 Call / WhatsApp: 07702 518898