The document is a final lecture by David Collings at the University of Surrey discussing various long span bridges (LSBs) under construction worldwide as of spring 2015. It highlights specific projects, such as the Sungai Brunei Bridge and the Izmit Bay Bridge, detailing their spans and construction progress. Additionally, Collings expresses intent to update the lecture in the future, inviting suggestions for interesting LSBs via LinkedIn.

1. Current Long Span Bridges
This final lecture outlines some of
the various LSBs currently under
construction around the world
(Spring 2015).
Presentation at university of Surrey May 2015 by
David Collings BSc CEng FICE
Making the complex simple

2. Current Long Span Bridges
This final lecture outlines some of
the various LSBs currently under
construction around the world
(Spring 2015).
David Collings BSc CEng FICE
Making the complex simple

3. Sungai Brunei Bridge
I had previously prepared a design for a bridge on this
site, it was good to see this 300m span bridge
underway April 2015). The pylon is halfway up and the
deck just being started. The design uses a concrete
box girder on a single inverted Y concrete pylon.

4. 1 2
Access to the bridge is best by
water.
4 3

6. Queensferry Bridge
This bridge the 3rd bridge across the Fourth of Firth.
It has a couple of spans of 650m. These images
from Scottish.gov and twitter.

9. Rabat Bridge
I came across this 376m span cable stay bridge a few
years ago, the unusual towers are now complete and
the deck cantilevering almost finished.

12. Izmit Bay Bridge
Another bridge I did a little work on a few years ago.
The 1550m span bridge across Izmit Bay is coming on
the viaducts are progressing and the main bridge
towers complete and cables being laid.

13. The top of the tower looking down.
The cable saddles can be seen.

15. Halogaland Suspension Bridge
This 1145m span bridge is interesting in it will bring the cable
together over the tower, improving torsional response but maybe
making deck construction more difficult. The following image is a
little dark and the tower is not high enough to stand out.

17. HZM Bridges
It has been a few years since I have been to
Zhuhai, the bridges across the delta are now
progressing. One (left) is well advanced and
has a slender tower by using saddle
technology (avoiding anchorages and a
hollow pylon). The other sail tower (above)
is not yet above deck. I hope to see both
more complete on next years visit.

21. David Collings BSc CEng FICE
Making the complex simple
Lusail Bridges
I did some work on construction sequences for these odd looking
bridges a while ago. I was reminded of this on a recent visit (Jan
2015). They are some of a number of bridges in the Middle East (and
elsewhere) where engineers are being led in odd directions.

22. David Collings BSc CEng FICE
Making the complex simple

23. 3rd Bosporus Bridge
This 1408m span is billed online as a suspension bridge with tall
towers, but is a hybrid with a mainly cable stayed deck. Often
combined in early bridges this hybrid stay-suspension form gives a
stiffer structure and is likely to be more common in future
suspension bridges.
David Collings BSc CEng FICE
Making the complex simple

27. Current Long Span Bridges
I will update this lecture for next
year, if you are aware of an
interesting LSB under construction
please let me know via Linkedin.
David Collings BSc CEng FICE
Making the complex simple

28. Presentation by CRD and Wolf productions.