Factory-made wooden bridges
create new opportunities.
The future of bridges is wood.
The market for bridges is currently undergoing significant
Fast assembly times with factory-made bridges Utilising
change, with wood becoming an increasingly popular choice of
the advantages of industrial construction, Martinsons has
building material. There are no real limitations to the distance
developed design solutions that have allowed wooden bridges to
a wooden bridge can span and wooden bridges offer both the
surpass those made of steel and concrete bridges in a number
same level of performance and functional lifespan as bridges
of aspects. Our wooden bridges are built almost to completion in
made of steel and concrete, regardless of whether they are used
our factory. This high degree of prefabrication generally makes
as pedestrian and bicycle bridges, or as road traffic bridges
on-site assembly much faster than for bridges made from other
designed to carry heavy traffic.
materials.
Martinsons leading development As the leading producer
A sound choice for the long term Through focussed research
of wooden bridges in the Nordic region, Martinsons has an
and development, we have developed a series of technical
important role to play in the development of the next generation
design solutions which make our bridges highly durable.
of bridges. Not only are we the largest supplier of bridges,
They are also resistant to road salt and retain their appealing
but we have also established the market’s leading, high-tech
characteristics over time.
development department within our company: experienced
bridge specialists who have been a driving force in taking
wooden bridges to where they are today.
Need
Description of
requirements
Proposal
and tender
Design
Planning and
preparation
Manufacture of
ready-to-assemble
bridge
Simplified planning Our customers often make use of our expertise
Added value
during the planning phase of their projects. At Martinsons, we are
Quality assured factory manufacturing
happy to provide support and consultation services to help you create
High level of prefabrication
the optimal solution for each specific bridge project. As experienced
bridge specialists, the extensive expertise we have gained over many
years means we can offer you the support needed for success.
Fast assembly times
Minimal interruption to traffic
Efficient assembly methods
Carefully crafted logistical solutions Right from the outset, we take
Carefully planned logistical solutions
measures to ensure that assembly will be as easy as possible for
Low transportation costs
you. The completed bridge parts are normally put in place right
Inexpensive foundations
off the lorry, requiring minimal labour and making final assembly
Weather-resistant
simple.
Logistics
Easy-to-replace components
On-site assembly
Application of
surface material
Completed bridge
Road traffic bridges
Options for railings Railings materials are chosen
based on the to meet customer’s preferences for
material and the applicable safety requirements.
Surfacing Bridges are
surfaced using either
asphalt or gravel.
Transversallly prestressed glulam deck.
Glulam beams are joined to a plate using
a steel crossbars.
Protective design elements for a long
lifespan Carefully crafted construction
solutions in the form of drop edges and
protective panelling mean water is led away
from the bearing wooden components.
The next generation of road traffic bridges Martinsons has
glulam for decades and knows how to make the best use of its
been at the forefront of industry development for a number of
unique characteristics. Since glulam is a light material with a
years and has played a crucial role in increasing interest in
high bearing capacity in relation to its weight, we can offer you
wooden road traffic bridges. Thanks to the dedicated research
time-saving, economical solutions.
carried out within our in-house development department,
we have been able to create design solutions that have lifted
wooden road traffic bridges to the same level of performance
as bridges of other materials and that are readily adaptable to
suit heavy vehicle traffic.
Dependable designs Our experience with large bridge projects
has allowed us to develop dependable solutions with low
maintenance requirements. The risk of damage caused by
collision is minimised as far as possible through smart design
and any damage that does occur can be repaired relatively
Glulam – a natural material for bridges Our ability to see
easily. Thanks to a high degree of prefabrication, assembly is
the potential of glulam and capitalise on the advantages of
effective, requiring only minimal labour. Assembly is simplified
industrial construction have made it possible for us to take
right from the factory, with bridge parts being loaded onto
wooden bridges to a new level. Martinsons has been developing
transport lorries in order of assembly.
Road traffic bridges with great potential Our bridges can be ordered to meet the National Swedish Road Administration’s Bro 2004
standard and have the same technical lifespan as bridges made from other materials. We are happy to provide consultation services right
from the earliest planning stages and can provide advice on the most appropriate bridge types according to the specific circumstances.
From left: Skeppsvik Umeå municipality, Klockarbergsleden Skellefteå municipality, Virserum Hultsfred municipality, Husån Örnsköldsvik
municipality, Trekanten Kalmar municipality, Gårdsjöån Bräcke municipality.
Pedestrian and bicycle bridges
Choice of railing Railings are chosen
based on the customer’s preferences
for material and applicable safety
requirements.
Truss girder bridges are
one of the many types
of bridges which can be
used as pedestrian and
bicycle bridges.
The road surface can be laid
using either asphalt or wooden
boards.
Protective design elements for a long
lifespan Carefully crafted construction
solutions in the form of drop edges and
protective panelling mean water is led away
from the bearing wooden components.
Good living environments With the next generation of
bridges results in very fast on-site assembly times, thus on
pedestrian bridges made from wood, Martinsons has created
nearby roads and railway lines. Smaller bridges assembled to
unique opportunities for attractive design solutions in which
completion in the factory can often be put in place straight off
the bridge forms a natural part of the landscape, and which
the lorry, with the entire installation process being carried out
contribute to pleasant living environments. Our bridges also
on the same day.
offer effective and functional design solutions that make full
use of the unique building characteristics of glulam.
Financial advantages Fast assembly plays an obvious role
in keeping the total cost of wooden bridges at a competitive
Minimal interruption to traffic By undertaking most of its bridge
level. Martinsons bridges are made primarily of glulam, the low
manufacturing in a dry and precise factory setting, Martinsons
weight of which keeps costs for transportation and foundation-
has taken industrial construction to a new level. Just as with road
laying low. The bridges’ design also makes them relatively easy
traffic bridges, the high degree of prefabrication of pedestrian
to replace, either wholly or in part, should damage occur.
Pedestrian bridges offer many options Martinsons standard range includes a number of bridge types developed to suit different
conditions and customer preferences. Pedestrian bridges can be designed to create attractive forms with long spans and to ensure efficient
assembly. From left: Uddebo Tranemo municipality, Remsele Sollefteå municipality, Tokke Norway, Ostvik Skellefteå municipality, Spångerum
Åtvidaberg municipality, Tierp municipality.
assemble building kits with complete drawings and assembly details or as pre-assembled bridges, ready
to be lifted into place. Martinsons can also assemble the bridge for you and deliver it, ready for use, if
you prefer.
Road traffic bridges
be customised to suit the conditions of a specific project. The bridges are delivered either as ready-to-
Pedestrian and bicycle bridges
Bridge types Each different design solution has been created to meet a particular need. Any design can
Transversally prestressed glulam deck bridges Manufactured from
glulam beams held together transversely with steel rods. The bridges
can be designed with offset joints to allow for the construction of
long bridges with a homogeneous, unbroken surface. Road surface:
asphalt or gravel.
Box girder bridges Assembled by transversely joining a number of
vertical glulam webs and horizontal glulam flanges. The glulam webs
can be manufactured with an upper ridge so as to give the bridge
deck a slight arch. Road surface: asphalt or gravel.
Girder bridges Constructed using glulam beams with transverse
beams or surface planks. The beams are manufactured with an
upper ridge so as to give the bridge deck a slight arch.
Road surface: wood, asphalt, gravel or grating.
Truss girder bridges Bridges constructed using two glulam truss
girder. These function as both the main bearing framework and as
railings. Road surface: wood or asphalt.
T-girder bridges The T-girder cross- section is constructed by
transversely joining vertical glulam webs and horizontal glulam
flanges. The glulam webs can be manufactured with an upper ridge
so as to give the bridge deck a slight arch. Road surface: asphalt or
gravel.
Gravel bridges Consists of two transversally prestressed wooden
decks with a gravel bed. This type of bridge can be erected on a
simpler foundation of wood or concrete. Road surface: gravel.
Primary framework A bridge can be supplemented with a primary framework in the case of extended spans or in order to keep
the height of the construction to a minimum. This framework can be constructed in a number of different ways so as to achieve
the optimum result and so that the bridge fits in well with the surroundings.
King post truss bridges Hanging trusses make extended spans
possible while keeping the deck at a relatively low height. This also
allows for a good clearance height under the roadway.
Arch bridges In cases when the span is even greater, King post
trusses can be replaced with overhead or underlying arches. The
bridge deck is either suspended with hangers from above o support
girders on the arch from below.
Cable stayed bridges A cable stayed bridge is supported using
pylons from which stays of solid steel bars extend and attach to the
deck. Suspending the deck using stays allows for the covering of
larger spans than is possible using arched bridges.
Martinsons Kroksjön 230, SE-931 95 Skellefteå, Sweden
Tel +46 910 73 31 70 Fax +46 910 73 31 89
www.martinsons.se
SGS-COC-005242