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Course in Extradosed Bridges and How They Differ from Cable-Stayed Bridges

Online course of 300 hours in extradosed bridges and how they differ from cable-stayed bridges, structured in 6 modules covering concept, typology comparison, cables and deviator saddles, structural analysis and construction control, with an assigned technical tutor.

Duration300 hours · 3 months
ModeOnline
LanguageEnglish
Start datesSet by the faculty
AwardSEIUM Institute certificate
Enrol now View syllabus Ask an advisor
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Learning outcomes

What you will be able to do

01

Explain the evolution towards extradosed bridges.

02

Compare extradosed and cable-stayed bridges using objective criteria.

03

Design cables and deviator saddles.

04

Analyse construction stages and fatigue.

05

Plan construction and stressing control.

06

Select the optimal bridge type for a given site.

07

Prepare the preliminary design of an extradosed bridge.

Profile

Who it's for

  • Bridge engineers.
  • Prestressing specialists.
  • Structural analysts working on large structures.
  • Bridge construction engineers.
  • Designers of special structural typologies.
  • Structural engineering consultants.
  • Engineering or science graduates seeking to enter the road infrastructure sector.
Standards & tools

What you'll work with

  • fib Bulletin 30 (acceptance of stay cable systems using prestressing steels)
  • PTI DC45.1-18 (recommendations for stay cable design, testing and installation)
  • EN 1992-2 (Eurocode 2: concrete bridges)
  • EN 1993-1-11 (Eurocode 3: design of structures with tension components)
  • EN 1991-2 (Eurocode 1: traffic loads on bridges)
  • Real Decreto 470/2021 (Spanish Structural Code)
  • SOFiSTiK
  • MIDAS Civil
  • CSiBridge
  • LUSAS Bridge
Syllabus

6 modules

  1. 1.1Origin of the extradosed concept
  2. 1.2Internal, external and extradosed prestressing
  3. 1.3The Ganter and Odawara bridges
  4. 1.4Competitive span range
  5. 1.5Deck depth-to-span ratio
  6. 1.6Reduced pylon height
  7. 1.7Load sharing between deck and cables
  8. 1.8Construction advantages
  9. 1.9Examples in Spain
  10. 1.10Case study: analysis of a Japanese extradosed bridge
  1. 2.1Deck stiffness versus cable stiffness
  2. 2.2Pylon height and cable angle
  3. 2.3Stress variation in cables
  4. 2.4Fatigue and stress limits
  5. 2.5Cable arrangement
  6. 2.6Behaviour under live loads
  7. 2.7Cost and material quantities
  8. 2.8Aesthetics and landscape integration
  9. 2.9Selection criteria
  10. 2.10Practical exercise: comparison table of two solutions
  1. 3.1Extradosed cable systems
  2. 3.2Deviator saddles in the pylon
  3. 3.3Anchorages in the deck
  4. 3.4Corrosion protection
  5. 3.5Friction in saddles
  6. 3.6Allowable stress criteria
  7. 3.7Cable replaceability
  8. 3.8Vibration damping
  9. 3.9Qualification tests
  10. 3.10Lab: verification of a deviator saddle
  1. 4.1Global bridge model
  2. 4.2Construction stages
  3. 4.3Creep and shrinkage
  4. 4.4Stress range in cables
  5. 4.5Fatigue analysis
  6. 4.6Thermal effects
  7. 4.7Seismic analysis
  8. 4.8Ultimate limit states
  9. 4.9Prestressing optimisation
  10. 4.10Practical exercise: model of an extradosed bridge in SOFiSTiK
  1. 5.1Balanced cantilever construction with cables
  2. 5.2Form travellers
  3. 5.3Cable stressing and adjustment
  4. 5.4Geometric control
  5. 5.5Force monitoring
  6. 5.6Closure of the central span
  7. 5.7Construction tolerances
  8. 5.8Load tests
  9. 5.9Inspection and maintenance
  10. 5.10Case study: stressing plan for an extradosed bridge
  1. 6.1Site constraints
  2. 6.2Justification of the bridge type
  3. 6.3Preliminary sizing
  4. 6.4Comparison with a cable-stayed solution
  5. 6.5Model and analysis
  6. 6.6Cable checks
  7. 6.7Construction process
  8. 6.8Conclusions
  9. 6.9Report and presentation
  10. 6.10Final project: final review with your tutor
Methodology, software & labs

How you'll learn

Training is 100% online on the SEIUM campus, with downloadable material, recorded classes and an assigned technical tutor. There are no fixed timetables: you progress at your own pace within each intake, so the programme fits around your job.

Each module combines theory, guided reading of the original standards and applied exercises. The working software is SOFiSTiK, MIDAS Civil, CSiBridge and LUSAS Bridge, in free, academic or evaluation versions. Cases are studied on real procedures such as comparing extradosed and cable-stayed typologies, cable fatigue analysis and stressing planning in cantilever construction. Assessment is continuous by module, plus the final project.

Standards covered: fib Bulletin 30, PTI DC45.1-18, EN 1992-2, EN 1993-1-11, EN 1991-2, Real Decreto 470/2021.

Assigned technical tutor:every module ends with a deliverable that your tutor marks individually.
Standards-based learning:guided reading of fib Bulletin 30, PTI DC45.1-18 and EN 1992-2 applied to real cases, not as a theoretical annex.
Industry software:SOFiSTiK, MIDAS Civil, CSiBridge and LUSAS Bridge, in free, academic or evaluation versions.
Final project:the preliminary design of an extradosed bridge, justified against a cable-stayed alternative, reviewed by your tutor.
Flexible format:100% online, no fixed timetables, compatible with full-time work.
Capstone project

Build it end to end

Your final project follows the real engineering workflow, step by step, reviewed by your tutor.

Analyse the site
Identify the site constraints and justify the extradosed typology.
Size the structure
Carry out preliminary sizing of deck, pylon and cables.
Compare with a cable-stayed option
Compare stiffness, cable stresses, fatigue and cost against a cable-stayed solution.
Model and check
Model the bridge, analyse construction stages and check the cables.
Final project
A preliminary design of an extradosed bridge with construction process and conclusions, reviewed by your tutor.
Career opportunities

Where this takes you

Bridge engineerPrestressing specialistLarge structures analystBridge construction engineerSpecial typologies designerStructural engineering consultant
Admissions & scholarships

Requirements

  • No prior qualification is required.
  • An internet connection and a computer capable of running the programme software.
  • English sufficient to read technical standards.

Ready to start?

Send your application today. Our admissions team replies within 72 hours with your study plan and funding options.

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FAQ

Frequently asked questions

The programme totals 300 hours over 3 months. You set your own pace within each intake, and your tutor helps you plan the workload around your job.

You work with SOFiSTiK, MIDAS Civil, CSiBridge and LUSAS Bridge, using free, academic or evaluation versions. Your tutor indicates the free alternative wherever one exists.

A SEIUM Institute certificate, awarded on passing the continuous assessment and the final project. It is SEIUM's own qualification, not an official state degree; its recognition depends on the programme completed and the regulations of each country.

Yes. Modules passed are recognised in a higher programme in the same area (postgraduate diploma or master's). Ask about the recognition policy when you enrol.

No prior qualification is required; you need a computer able to run the programme software and English sufficient to read technical standards.

Start dates are set by SEIUM's faculty for each intake. Our admissions team will confirm the next available date when you apply.

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