Technical Assurance

Precast & Steel

Independent technical governance and programme assurance. 15 years supporting complex infrastructure delivery across HS2, Hinkley Point C, LoHAC, CCPPs, Oil & Gas and Copenhagen Metro.

Project Case Studies

Precast

29 HS2 precast beam structures delivered by FTB — Technical Manager / TWC role held across all assets.

B4115 Ashow Rd Overbridge

B4115 Ashow Rd Overbridge

FTB's first bridge from their newly established Melton Mowbray facility, marking their ISO accreditation and commitment to quality.

Beam TypeT-Beam
Units24 No.
Length13–23m
Concrete269m³
Curdworth Box

Curdworth Box

Critical structure facilitating safe HS2 passage over existing Network Rail line. Marked the launch of a new FTB production line.

Beam TypeInverted T-Beam
Units24 No.
Length24.5m
Concrete496m³
A429 Kenilworth Overbridge

A429 Kenilworth Overbridge

Second structure in FTB's T-beam production line. 60m, 3-span integral bridge spanning over the proposed electrified HS2 lines.

Beam TypeT-Beam
Units30 No.
Length16–25m
Concrete356m³
Attleboro Lane Overbridge

Attleboro Lane Overbridge

Largest T-beam asset in FTB scope for HS2. 56 beams over 5 spans with four different skew angles and complex edge beam detailing.

Beam TypeT-Beam
Units56 No.
Length13–23m
Concrete625m³
Carol Green Rail Underbridge

Carol Green Rail Underbridge

91m bridge carrying HS2 over the West Coast Main Line. Deliveries coordinated across 14 consecutive rail possession weekends.

Beam TypeInverted T-Beam
Units83 No.
Length19m
Concrete610m³
Burton Green Retaining Structure

Burton Green Retaining Structure

Entrance portal to an HS2 green tunnel. Bespoke stainless-steel inserts and earthing components promote biodiversity goals.

Beam TypePrecast Props
Units80 No.
Length17–22m
Concrete1,125m³
A452 Kenilworth Road Overbridge

A452 Kenilworth Road Overbridge

185m structure, 14m high. Just-in-time delivery of up to 8 beams per day required detailed logistics planning.

Beam TypeT-Beam
Units51 No.
Length17.5m
Concrete475m³
Washwood Heath Retained Cut

Washwood Heath Retained Cut

First precast prop structure on the programme. Critical entry point to one of the deepest HS2 tunnel sections along the Midlands route.

Beam TypePrecast Props
Units22 No.
Length19–22m
Concrete352m³
Marsh Farm Viaduct

Marsh Farm Viaduct

Marks the operational launch of FTB's final casting line. Highest architectural finish specification within the project.

Beam TypeI-Beam
Units66 No.
Length18.55–23.6m
Concrete1,020m³
Chattle Hill UTX Underbridge

Chattle Hill UTX Underbridge

Key Design Element requiring community involvement. U-shaped edge beams at 95T required police escorts and night movement orders.

Beam TypeInverted T-Beam
Units15 No.
Length25.5m
Concrete390m³
Hunningham Rd Overbridge

Hunningham Rd Overbridge

50m three-span integral bridge. Close coordination ensured clash-free interface between beams and diaphragm starter bars.

Beam TypeT-Beam
Units24 No.
Length12–21m
Concrete225m³
B4455 Fosse Way Overbridge

B4455 Fosse Way Overbridge

81m four-span overbridge allowing HS2 beneath the historic Fosse Way Roman road. Proactive logistics overcame adverse weather.

Beam TypeT-Beam
Units44 No.
Length13–25m
Concrete500m³
B4114 Birmingham Road Underbridge

B4114 Birmingham Road Underbridge

Will support four HS2 rail lines. Edge protection pre-fitted offline — entire delivery and installation completed in just two days.

Beam TypeInverted T-Beam
Units7 No.
Length18.5m
Concrete55m³
Lavender Hall Lane Overbridge

Lavender Hall Lane Overbridge

52.6m three-span integral bridge. Road permanently realigned and raised ~10m for HS2 clearance. Constructed partially offline.

Beam TypeT-Beam
Units21 No.
Length14–22m
Concrete222m³
M215 Footpath Overbridge

M215 Footpath Overbridge

Single-span integral bridge at 90° to track. Accommodates agricultural access, PRoW footpath, and 16m-wide green bridge feature.

Beam TypeT-Beam
Units15 No.
Length23m
Concrete225m³
Offchurch Greenway Overbridge

Offchurch Greenway Overbridge

69m, 22m-wide green overbridge. All 45 beams delivered and installed within 10 days despite challenging weather conditions.

Beam TypeT-Beam
Units45 No.
Length15–23m
Concrete536m³
Hollywell Brook Underbridge

Hollywell Brook Underbridge

Allows Hollywell Brook to pass beneath HS2 Birmingham Interchange, minimising environmental impact and flood risk.

Beam TypeInverted T-Beam
Units40 No.
Length10.6m
Concrete150m³
Attleboro Flyover Retaining Walls

Attleboro Flyover Retaining Walls

Hybrid two-stage construction. Props serve as temporary restraints during excavation then provide permanent support once base slab is complete.

Beam TypePrecast Props
Units13 No.
Length10m
Concrete76m³
Drayton Lane Overbridge

Drayton Lane Overbridge

58.6m three-span structure, 120-year design life. Deck width of 17m. Engineered for safe vehicle passage over two HS2 mainline tracks.

Beam TypeT-Beam
Units36 No.
Length16–30m
Concrete520m³
Bangley Lane Overbridge

Bangley Lane Overbridge

54.9m three-span bridge carrying realigned Bangley Lane over two HS2 mainline tracks. Owned and maintained by HS2.

Beam TypeT-Beam
Units24 No.
Length14–24m
Concrete282m³
B4101 Waste Lane Overbridge

B4101 Waste Lane Overbridge

61m three-span bridge at 15° skew. One pier linked to Burton Green retaining wall; other built using top-down methods with single row of piles.

Beam TypeT-Beam
Units30 No.
Length15–23m
Concrete360m³
Darnford Lane Overbridge

Darnford Lane Overbridge

53m three-span integral bridge engineered for 120-year service life. 24.2m central span at 1.5° skew over twin HS2 slab track.

Beam TypeT-Beam
Units21 No.
Length13–23m
Concrete240m³
A445 Leicester Lane Overbridge

A445 Leicester Lane Overbridge

Vital crossing carrying realigned A445 over HS2. Three-span integral structure, eight T-beams per span, 10.8m overall width.

Beam TypeT-Beam
Units24 No.
Length13–24m
Concrete255m³
Sutton Road Overbridge

Sutton Road Overbridge

Precast beam production and temporary works governance for a highway overbridge carrying Sutton Road over the HS2 mainline under the FTB scope.

Beam TypeT-Beam
Units
Length
Concrete
Watton House East & West Viaduct

Watton House East & West Viaduct

Twin multi-span viaduct structures carrying the realigned highway over the HS2 mainline. Precast beam production and full temporary works governance under the FTB scope.

Beam TypeT-Beam
Units
Length
Concrete
Church Lane Overbridge

Church Lane Overbridge

Precast beam production and temporary works governance for the Church Lane overbridge carrying the realigned local road over the HS2 mainline under the FTB scope.

Beam TypeT-Beam
Units
Length
Concrete
River Leam Viaduct

River Leam Viaduct

Multi-span viaduct carrying the HS2 mainline over the River Leam. Precast beam production and full temporary works governance under the FTB scope.

Beam TypeT-Beam
Units
Length
Concrete
A45 Service Road Overbridge

A45 Service Road Overbridge

Precast beam production and temporary works governance for the A45 Service Road overbridge carrying the realigned local road over the HS2 mainline under the FTB scope.

Beam TypeT-Beam
Units
Length
Concrete
M42 Coleshill South Viaduct

M42 Coleshill South Viaduct

Precast beam production and temporary works governance for the M42 Coleshill South viaduct structure carrying the realigned highway over the HS2 mainline under the FTB scope.

Beam TypeT-Beam
Units
Length
Concrete

Steel

Selected steel structures across rail, commercial, energy and industrial projects — engineering, assurance and fabrication oversight.

HRSG Noreste & Altamira

HRSG Noreste & Altamira

Structural analysis and check of HRSGs and auxiliary steel structures for two Mexican combined-cycle plants (850 MW Noreste, 1,155 MW Altamira V) to Eurocode, AISC and ASCE with seismic analysis.

TypeHRSG steel modules
SteelSteel modules
Scale850 / 1,155 MW
ClientIberdrola
La Mède Biorefinery

La Mède Biorefinery

QA/QC compliance lead for structural and geotechnical packages on Total's €337M refinery-to-biorefinery conversion near Marseille — structural assessment of existing facilities.

TypeRefinery steelworks
SteelPipe racks
Scale500,000 tpa
ClientTotal
Waterloo Station — Roof Infill

Waterloo Station — Roof Infill

Glazed steel-framed infill roof bridging the Grimshaw WIT arch and the 1920s concourse roofs. 52m spine truss (4.2m deep, 27t) on 508mm CHS columns — 2020 Structural Steel Design Award Commendation.

TypeSteel lattice roof
Steel~400 t
Scale52m × 18m
ClientNetwork Rail
Environmental Complex Guipuzcoa

Environmental Complex Guipuzcoa

Waste-to-energy environmental complex set in a forested valley — exposed structural steel framework supporting a green-panelled processing hall, solar-array roof and integrated mechanical treatment.

TypeSteel-framed waste facility
SteelFacade steelwork
ScaleValley plant
ClientGipuzkoa
The Marshall Building — LSE

The Marshall Building — LSE

Concrete-framed LSE academic building with integral sculptural steel 'tree' columns supporting the upper floors — ~3,500t carried. Ten storeys over two basements, Grafton Architects.

TypeSteel "tree" columns
Steel~3,500 t
Scale10 storeys / 18,000 m²
ClientAKT II / LSE
33 Grosvenor Place

33 Grosvenor Place

Full demolition behind a retained historic stone façade opposite Buckingham Palace — propped steel retention frame and new steel structure delivering a 205-bed private medical clinic.

TypeSteel façade retention
Steel~100 m frame
Scale6 storeys / 205 beds
ClientWaterman
JLR Research Centre

JLR Research Centre

Automotive R&D facility with an exposed structural steel lattice roof and perforated metal facade. Warm clerestory glazing frames a low-rise research campus engineered for long-span, column-free workshop volumes.

TypeExposed steel lattice
SteelLong-span roof
ScaleR&D campus
ClientJaguar Land Rover
Deep Conversion — PDVSA

Deep Conversion — PDVSA

Site supervision and structural assessments for PDVSA's deep-conversion oil & gas infrastructure — temporary stability bracing for steel pipe-rack assembly (INELECTRA).

TypeSteel pipe racks
SteelStability bracing
ScaleOil & gas plant
ClientPDVSA

Technical Assurance

Infrastructure & Industrialised Construction

Factory design and production planning for precast, structural steel and specialist manufacturing facilities. Discrete Event Simulation (DES) is used to assess production flow, capacity, resource utilisation, WIP and bottlenecks, and to evaluate alternative factory configurations before implementation.

Industrial precast production line
QA / QC assembly station

Project Ledger

Selected assignments across bridges, tunnelling, nuclear, energy, and heavy civils. Full project register available on request.

Project Locations — 49 pins across 7 countries
Leaflet © OpenStreetMap contributors
52Bridges & Heavy Civils
9Nuclear & Energy
13Commercial & Steelwork
7Countries

Get in Touch

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Carlos Berrios P. — Independent Technical AssuranceLondon, UK
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