Span by span demolition of the bridges using the MSS – Movable Scaffolding System

Span by span demolition of the bridges using  STRUKTURAS MSS – Movable Scaffolding System.

Contractors Eiffage , Implenia and Arlt Bauunternehmen GmbH are using this demolition method for their client Die Autobahn GmbH

See the video about the project. For more videos about our projects, visit and subscribe to our Youtube channel  STRUKTURAS YOUTUBE CHANNEL

The demolition of the old bridge with MSS is an effective and safe solution:

– Minimal intervention to existing infrastructure.

– Using MSS for demolition allows the existing highway to remain open throughout all of the demolishing period.

– Moreover MSS allows the existing railway to remain open throughout most of the demolishing period.

– The MSS could be assembled on the ground and later could be lifted with 4 strand jacks.

– After finished demolition MSS could be lowered with 4 strand jacks on the ground for safe and productive MSS dismantling.

– The challenging MSS installation conditions can be carried out by professional site crew from Strukturas.

– The engineering challenge is to avoid an overload of the superstructure during the demolition and to ensure a safe load transfer within the load capacity of the MSS.

– After the demolition this same MSS could also be used for the construction of the bridge deck. This approach saves time and resources, making the construction process more efficient.

If you would like to learn more about bridge demolition using Movable Scaffolding System, send us an email and we will contact you as soon as possible!



#SpanBySpan #Bridge #Demolishing

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#Bridge #ConstructionMethods

#Concrete #Project #Innovation

#Engineering #Technology

#Sustainability #Productivity


The story of legendary MSS Drammensvogna

The story of legendary MSS Drammensvogna – 50 years in action 
Last week we signed one more MSS redesign contract with Skanska, who owns legendary MSS Drammensvogna.
This time it shall be used at bridge Vadløkkjbrua on the E6 south of Trondheim, Norway.
Vadløkkjbrua will be the 19th project made with this MSS!
MSS Drammensvogna, one of the first MSS was builded in 1973 for Norway the motorway bridge in Drammen, Norway.
The E18 motorway bridge in Drammen is a four-lane girder bridge on the E-18 that crosses the outlet of the Drammen river between Brakerøya and Bangeløkka. The bridge has free spans of up to 60 meters and a sailing height of up to 12 metres.
Until now it is the longest bridge in Norway – 1,890 meters!
Movable Scaffolding System - MSS
Revolutionary MSS technology has proven its productivity.
The contractor for the bridge was Ingeniør Thor Furuholmen A/S, one of the largest companies in Norway at the time. They later merged with Ing. F. Selmer A/S to Selmer – Furuholmen AS, which today is Skanska Norge AS.
In collaboration with the consulting company Taugbøl & Øverland A/S (now COWI), the MSS was designed and put into production.
Construction work began in the autumn of 1973. The span by span casting of the bridge deck was carried out with a newly developed type of MSS, 131 meters long (800 tonnes weight), which enabled full casting at a speed of up to 100 meters of bridge per 14 days. Bridge deck has been casted 4 weeks before end of construction schedule.
Since that time the MSS Drammensvogna has been redesigned for many bridge projects in Nordic countries as underslung and overhead MSS.
On the engineering side, competence on the equipment has been maintained internally at Skanska, and there has also been good cooperation with for the consulting with us –  company Strukturas as.
All the projects accomplished with the Drammensvogna MSS:
1. E18 Drammen Drammensbrua 1973-75
2. E39 Kristiansand Gartnerløkka bridge 1978
3. Stockholm Johanneshov Bridge 1981-83
4. Strømstad Skee bridge 1986
5. E6 Oslo Lodalen bridges 1986-87
6. Sweden Obbola bridge 1988-89
7. Molde Bolsøy Bridge 1990
8. Skien Menstad bridge 1990-91
9. Askøy Askøy Bridge 1990
10. Storeklubben, Askøy Storeklubben viaduct 1989
11. Troms Dyrøy Bridge 1994
12. Porsgrunn Frednesbrua 1994-95
13. Gardermobanen Mork/Nessa/Kvisldalen 1995-96
14. Sykkylkven Sykkylvsbrua 1999-2000
15. E18 Drammen Parallel motorway bridge 2003-2004
16. E16 Bagn Bagn bridge 2017
17. Nordøyvegen Lauke and Hamnaskjersund bridge 2020-21
18. E16 Bjørum-Skaret Isielva bridges 2022-24
19. Vadløkkjbrua on the E6 south of Trondheim 2024-25
Founder of Strukturas Tore Gjølme has followed this MSS since the beginning and will participate also at the 19th project for Drammensvogna. 
He is 78 years old and still going strong!
Credits to Statens vegvesen – Norwegian Public Roads Administration

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TB Heubach Bridge demolition

Implenia, a leading construction services company, decided to use an Strukturas Movable Scaffolding System (MSS) Underslung for the demolition of existing concrete decks on the TB Heubach Bridge in Germany.
Moreover this same MSS is also used for the construction of the bridge’s new TT section decks. 
The Heubach valley bridge consists of two parallel structures, which will be demolished and rebuilt in two construction phases.
Bridge info:
Year of construction of existing building: 1968
Length: 184 meters
Width: 16.5+16.5 meters
Bridge spans: 30,6 + 37,5 + 45 + 37,5 + 30,6 meters
Max. height above ground: 18 meters
Demolition of the old bridge and the construction of the new Heubach bridge was awarded by Die Autobahn GmbH des Bundes.

MSS at assembling final stage

Deck demolition

The Strukturas MSS solution is particularly innovative because it allows the conversion of the MSS formwork from a box section, which is used during the demolition phase, to a TT section, which is used during the construction of the new bridge decks. This approach saves time and resources, making the construction process more efficient.
The challenging conditions on the job site made the assembly of the MSS particularly demanding, and the Strukturas MSS assembly team had to plan and execute the operation to the best of their ability.
Movable Scaffolding System ensures the minimal intervention to existing infrastructure.
Using MSS for demolition allows the existing highway and the road bellow to remain open throughout most of the demolishing period.
The engineering challenge – to avoid an overload of the superstructure during the demolition and to ensure a safe load transfer within the load capacity of the MSS.

MSS general cross section view when used to demolish the existing concrete decks.

Highlights & Facts:
Max Span: 45,0m
Max MSS Span: 45,0m
Weight of the concrete bridge: Approx 250 KN/m
Width Of Bridge Slab: 16.5m
Min. Hor. Radius: R= 2500m
Max Crossfall: 2.1%
Max Long Slope: 0,63%
Deflection of MSS: MAX L/400

The demolition of old bridge structures with MSS is an effective and safe solution for many bridges.

See the video below and do not hesitate if you wish to consult about your bridge!



Strukturas MSS approved as safe construction method to build bridge over the railway

The Bane NOR – Norwegian National Rail Administration has approved Strukturas MSS – Movable Scaffolding System as a safe construction method to build the bus road bridge over the railway line in Stavanger.

General Overhead MSS view
Movable Scaffolding System - MSS
MSS over the railway

The joint venture of Risa AS and Contur AS, with COWI as adviser, won the competition to build the Bussveien through Jåttåvågen, between Vaulen and Gausel in Stavanger.

The implementation of Strukturas as overhead MSS allows the railway to remain open throughout most of the construction period.
There is thus no need for a separate safety culvert over the railway, and train traffic can run while the biggest part of the concrete works is in progress.
When a contractor has to cast concrete or launch the overhead MSS over the railway they have to do it while there is no train traffic.

But they can do this work either at night when there is no train traffic or in periods where Bane NOR has approved stoppages in train traffic over several days. 
But most of the time concrete workers can work inside of the Strukturas as overhead MSS with ongoing traffic below.

If we had built in the usual way with traditional formwork, we would have had to secure the railway with a safety culvert and take additional safety measures to safeguard train traffic and other traffic under the bridge while the work is in progress, says Per Ove Stokkeland, project manager in Rogaland fylkeskommune .

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Special services for one of our first customers!

Our client, Mota-Engil, currently the largest Portuguese construction company present in various markets worldwide, has awarded Strukturas the redesign project of an Overhead MSS originally not provided by us and which had been stored for several years in their yard in Poland.

General Overhead MSS view
Rear launching support view
Workshop rebuilt stage
External steel formwork trial assembling at the steel workshop

Strukturas’ redesign introduced significant modifications to the MSS, including a hinge joint between the main girder and the front nose, allowing it to be used on plan view curved decks, the addition of a rear concreting support, which allows for the transportation of pre-assembled U-shaped reinforcement using electrical winches, and the supply of a hydraulically operated internal formwork.

Front nose trial assembling at main yard
Front nose trial assembling at main yard
Hinge detail at main girder
View from the rear
Front nose general view

Mota-Engil transported the MSS from Poland to Portugal, where it is currently being used in the construction of railway viaducts. The rebuilt MSS steel structure was done in Portugal. Mota-Engil gave a special attention to pre-assembly and testing both at the workshop and at their central yard, due to the MSS being stored in Poland for several years.

Strukturas has been supplying various bridge building equipment, including Formtravellers FT and Movable Scaffolding Systems MSS, to Mota-Engil for around 30 years. Our the first supply was made in 1994 of an Underslung MSS to the company, that was then called Engil and later included in the Mota group, giving rise to the current Mota-Engil.

Hydraulic operated internal formwork delivered by Strukturas
External steel formwork
New rear concreting view
Front and intermediate supports

Formtraveller: Road 431 in Israel

In Israel, near Tel Aviv airport several pairs of Formtravellers redesigned or supplied new by Strukturas are used in the construction of the project called road 431.

Thanks to our Israeli client Shikun & Binui for believing in our ability to be his technical partner at this challenging project.


To see more Formtravellers projects we have completed, visit the gallery HERE.

Strukturas Overhead MSS for Bridge SO 203

Early 2021 the Strukturas Overhead MSS named SO 203 was ready to  cast the first span at the first long deck of the bridge project D3 in the Czech Republic, close to Ceske Budejovice.


MSS SO 203 - 3D model picture
STRUKTURAS Rental Overhead MSS SO 203 at concreting first span second deck of project D3 close to Ceske Budejovice in the Czech Republic.

Krondorf Bridge demolition

The Strukturas rental Underslung MSS Randselva was dismantled autumn 2021 in Norway and sent directly to Germany for the demolition of the Krondorf Bridge on the A3 south of Nürnberg.


The northbound deck is being demolished as the traffic is running on the southbound deck. After domolished deck and new construction on the north bond deck, the Strukturas rental Underslung MSS will be used to demolish and build also the south bond deck.

Start MSS assembling

Deck demolition

MSS operation

World-leading bridge builders do also build factories

Herøya Industripark recently published an article about us:

Strukturas team moved from Langesund into the industrial environment at Herøya.

“We see a great drive in industry at Herøya. We want to be here because we can contribute, help build the new factories that are planned,” says Terje Johannessen, new head of industry and offshore at Strukturas.

Terje is back in Strukturas after five years in Bilfinger. Prior to that, he worked with steel structures in Strukturas for 22 years. Now he leads the company’s industrial venture after recently retired Paul Andersen.

Our team knowledge is in demand and it has turned into hundreds of giant steel and concrete bridges all over the world. Moreover we have also provided our services to Industry since 1991. Now we will also use the knowledge to help build factories. 

“I have recently been involved in building a factory,” comments Terje. “Under the auspices of Bilfinger, I was the engineering manager for NEL Hydrogen. They have now built the world’s largest factory for the production of electrodes here at Herøya.”

He mentions several industrial projects he has been involved in in recent years, such as REO (Rare Earth Objects), Hydro’s new aluminum factory at Karmøy, conversion of test facilities for Yara in the research park and the Bamboo project.

“I hope that my experience is useful for developing the industrial part,” says Terje. “The job will be to bring in industrial projects where we can contribute on steel and concrete. We can take part in all construction projects, and we are particularly strong in steel. I know many people here in the environment, and I am very pleased that we have moved to Herøya. Now we will further develop and focus on expanding the industrial department.”

FT Sibiu: casting deck segments in Romania

In Talmaciu near the historic city of Sibiu two Strukturas FT pairs was delivered to Hünnebeck to concrete the central cantilever deck of a bridge integrated in the new highway under construction

The bellow YouTube video shows an intersting timelapse of an early projetc stage

Credits: Drone Works