REFERENCE TO RELATED APPLICATION
This application claims one or more inventions which were disclosed in Provisional Application No. 201831048771 filed Dec 22, 2018 entitled "MAN PORTABLE ASSAULT BRIDGE".
FIELD OF INVENTION
The invention relates to a pre-engineered modular construction of "Deck Type" light weight (portable) assault truss bridge. More particularly, the present invention relates to building a bridging and/or support structure and/or portable roadway, in particular for constructing a lightweight, corrosion free, pre-fabricated modular box panels for a bridging and/or support structure usable as light weight vehicular bridge, a pedestrian bridge, a walkway, a podium or a stand or a ramp of any kind in order to solve the problem of bridging the gap quickly.
BACKGROUND OF THE INVENTION
Transportable and assembled bridges are known which can provide a path for pedestrian, bicycles, light or heavy vehicles, across and over obstacles such as rivers and ravines. Some example of previous invention of prefabricated unit construction modular bridging systems may be found in U.S. Pat. Nos. 4,912,795/5,414,885/6,009,586/ 4,965,903.
Examples of prefabricated unit construction modular bridging systems may be found in U.K. Patent No. 553,374 and U.S. Pat. Nos. 3,062,340 and 4,706,436. In the Deck type bridging system, main load-bearing side girders are built up from rectangular panels pinned or bolted end-to-end at their top and bottom chords to form a truss of the required length. Panel trusses can be placed side-by-side to form multi-truss single story side girders, and

can be bolted together one on top of the other where multi-truss double story construction is required in the side girders.
It follows that any span can be built in multiples of the panel length and by bolting panels one on top of the other to form side girders of twice the height and much greater moment of inertia and section modulus (multi-truss double store construction). It should be noted that in order to connect these panels together end-to-end and one on top of the other to form double story trusses, it is essential that each panel be exactly rectangular and precisely identical to the next.
One inherent fault of such rectangular steel panel bridge trusses is that when adjacent panels are pinned or bolted together at the top and bottom chord connections to form the main supporting side girders of the bridge, sag of the side girders occurs due to heavy weight. In long span single story bridges this sag (when added to normal elastic deflection of the structure under dead and live load) is often aesthetically unacceptable. Longitudinal forces (due to traction etc.) of any through-type bridge must be transmitted from the deck units through the supporting cross-beams (transoms) and the load-bearing side girders to the abutments. In many existing designs of modular truss bridges, the attachment of cross-members (transoms) to the individual panel diagonal/vertical members and bottom chord members causes some rotational forces and residual local bending stresses in one or more of these members. Such effects are detrimental in that they detract from the ability of the diagonal /vertical members and bottom chord members of side panels to withstand the direct compression and tension due to the normal vertical dead and live loads on the bridge.
US patent no. 854,329 discloses a portable bridge in the form of two separate longitudinal sections. However, this bridge was design for carrying automobiles and other small vehicles for crossing ditches or trenches for military use only and was only about 10 ft long. Also such portable bridge employed two longitudinal bridge sections each formed of

one piece of sheet metal which is not strong enough for transporting the heavy equipment.
Existing portable bridges or temporary bridges are too heavy to be transported by personnel and therefore must be transported by vehicles which cannot be used in certain areas such as hilly/terrain, jungles, disturbed/ effected, zone, soft/rough/rocky ground, muddy or such impassable area etc.
Carbon fibre has been used in a limited basis for ladder fabrication and offers for light duty use. Neither of these ladders is designed for easy disassembly and transportation into individual segments. There is a need in the art for a portable, lightweight segmented element that is also strong enough to utilise for light vehicular traffic in addition to walking.
In order to avail further benefit and overcoming existing difficulties, the present invention is developed to produce light weight man portable ready solution for different span of bridge.
OBJECTIVE OF THE INVENTION
There has long been a need for portable modular bridges to cross a gap of comparatively shorter span where the bridge components can be carried manually by small troops/crews.
Thus, it is an object of the present invention to provide a light weight bridge consisting of a light weight components that can be easily carried manually.
It is another object of the present invention to provide a portable modular bridge, which can be easily and readily transported in pieces to a larger distance with the help of moles, vehicles, aircraft or helicopters.

It is still another an object of the present invention that the bridge can be assembled manually as a self-supporting, projecting structure by relatively few people without using any special equipment/tool.
It is yet another object of the present invention to provide a prefabricated bridge which can be rapidly assembled and deployed entirely from the home side of the gap to be crossed.
It is further an object of the present invention to provide a bridge which can be easily rolled over Rollers placed on home side of the gap for launching the bridge across gap.
It is still another object of the present invention to provide a bridge that can be quickly assembled and dismantled. Means of quickly deploy for crossing the gap and as the purpose is over, quickly remove and repack for other deployment.
It is yet another object of the present invention to offer single tread for movement of pedestrian traffic and double tread with or without gaping or triple tread without gapping for movement of different type light vehicles along with pedestrian.
It is further object of the present invention to provide a ramp structure which may be constructed quickly to provide temporary or permanent access to all individuals between two areas of different elevation.
It is still another object of the present invention is to provide a quick solution to traffic re-routing.
It is yet another object of the present invention to provide handrails at the outer edge of top deck plate, mainly for pedestrians but will also serve as end demarcation for vehicles.

It is further an object of the present invention is to provide portable bridge which is simple in construction, easy to install and to reduce time required in installing.
SUMMARY OF INVENTION
It has been determined that the most practical way of achieving the object is with a truss and integrated panel design. A truss design allows long spans to form a bridge without the need for intermediate supports and related support foundations and square box panel allows very light structure in addition to stiffness.
The bridge in accordance with the present invention can be used as a fixed bridge for placement on the banks of a river or ravine. Alternatively, the bridge can be placed on floats and used as a ferry or as a floating bridge. Further, it is possible to add one or more approach ramps to the ends of the bridge in order to facilitate entry onto and off of the bridge.
In another aspect the invention resides in a plurality of light weight man-portable bridge modules adapted to be connected together in linear succession, by means of bolts on top and bottom, to span a gap, and capable of supporting at least light vehicular movement in addition to human traffic, wherein each such module is of generally rectangular box section and constructed principally of a fibre reinforced polymer material.
The present invention allows the fabrication of such structure using the full strength of fibre reinforced polymer material that have higher strength in bonding because of high strength capacity of resin for the main bearing structure. As an additional feature, the invention does not allow costly anodizing, bake paint finishing, and is configured for easy transportation of all components to the erection site. The fabrication of all components could also be made by numerically controlled technologies that could increase accuracy as well as minimizing the fabrication time.

A bridges is to provide a means for enabling personnel or army or mules or light weight vehicles or others to pass quickly across gaps e.g. streams, within damaged or partially collapsed buildings or dangerous within around the construction site, which can be rapidly assembled and deployed on site in minutes, typically within a confined space and entirely from the home side of the gap projected in cantilever fashion. Not least but may also use to connect two building towers.
The Bridge is Pre-engineered modular construction is of the "Deck Type" truss bridge, the roadway being carried using 'one-tread-way' or 'two-tread-way' or 'three-tread-way' or any multiple combination. A complete set of assembly of bridge components (Box Panels and Ramps) in a single row form 'one-tread-way' which is suitable for easy access of pedestrian. Similarly, 'two-tread-way' (two row sets separated by predefined spacing) is suitable for easy access of light weight vehicles. Similarly three-tread-way' may be used for easy access of pedestrian and light weight vehicles both at a single time.
The Box-Panel units are easy to handle and storage. Any unit of bridge to be carried to any specific location can be done easily by one man of crew by simply placing them over shoulder and same units can be rapidly assembled manually without using any heavy equipment into a bridge of desire length using less number of components.
A box panel and bridge modular system preferably includes solid rods, decking boards, non-metallic gussets, metal gussets, sway braces and joints. In a preferred embodiment, the solid rod, decking board and/or non-metallic gussets are made of carbon fibre. A carbon fibre box panel includes four type carbon fibre solid rods, which are Panel Longitudinal Chord, Panel Lateral Chord, Panel Diagonal Chord and Panel Vertical Chord. One end of carbon fibre solid rod is perpendicularly bonded to the one end of another carbon fibre solid rod and the carbon gusset is bonded at each of that joints at each side. Metal gussets, which are in-built connected with metal connectors are bonded over carbon gussets at nominal plane parallel and to one side at end of the box-panel to form the

provision of Panel-Panel or Panel-Bracing connections. Preferably, the Box Panel includes Panel & End-Panel.
In such an arrangement, the metal gusset plate may be riveted and/or bolted to the adjacent surfaces of non-metallic gussets for excellent bearing strength. These end fittings may be provided at each end of the structure so as to enable any desired number of the box-panels to be joined end-to-end. And also end-panels to ramp to be joined in similar fashion. In one end of the end-panel structure fittings may, preferably, be smaller than the panel for fitting with adjacent ramp.
In another embodiment, sway braces are o connected diagonally with the box panels to form the two tread-way segment. The removable sway braces of two tread way Assault Bridge includes a tube with removable connectors, which are preferably made of carbon fibre.
Yet another embodiment, end-post along with hand rails connected at outer edge of top deck plate for pedestrians and demarcation for movable vehicles. In a preferred embodiment, the end-post is made of fibre-reinforced material of light weight.
Conveniently, in a box-panel manufactured of square solid rods, the end fittings may have a rectangular portion attached in the end of each assembled upper and lower panel-longitudinal-chord and a protruding flange and/or socket portion for attachment to mating flange or sockets of fittings similarly attached to an adjacent box-panel. The mating flanges or sockets have opening for insertion of metal bolt or pin to attach adjacent box-panel together.
In another embodiment, a top surface of box-panel and ramp may be covered with decking board as integrated part of the structure.

The various square solid rods of the box-panels and the deck sheet of decking-board may comprise laying up alternate layers of longitudinal and lateral or diagonal extending carbon fibres pre-impregnated with resin on lightweight core, on suitably dimensions tools, curing the rods member and board structure under defined pressure. The core may be manufactured using hollow glass bubbles with resin.
It has been found that this principle of construction provides a light weight solid rods and decks of high strength in which the longitudinal fibres carry the main tension and compression loads and the diagonal and lateral fibres along with lightweight core provide sufficient stiffness to prevent buckling. Which is desired for "Deck-Type" lightweight truss bridge design.
In fabricating the box-panel from solid rod formed as above described, the various truss members are cut to length and located as per Fig.2 and joining the truss members. Bonding adhesive is applied where required and adhesive is cured with the rod assembly under pressure to form the truss member. A requisite number of truss members made and assemble the same side by side to provide desired dimension of box-panel structure.
Such design is very much useful as foot over bridge or safe foot traffic movement of army soldiers and may be used for transportation of army equipment or certain military operations, movement of light vehicles, movement of animals, fire fighting, disaster relief operation or emergency flood-like situation and recovery operations etc. as an assault bridge system to use in certain remote areas in hilly terrain, jungles, disturbed or effected zone on rough or rocky or muddy ground.
Other and further advantages of the present invention will be obvious upon an understanding of the illustrative embodiments about to be described or will be indicated in the appended claims, and various advantages not referred to herein will occur to one skilled in the art upon employment of the invention in practice.

BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
Fig. 1 is a perspective view of the truss and panel system of the present invention spanning two areas of different elevation so as to provide access between the two areas in an embodiment of present invention.
Fig.2 shows an elevation view of a perspective view of the truss and panel system of the present invention.
Fig. 3 shows yet another embodiment of a Man Portable Assault Bridge with Two Tread Way that includes a sway brace.
Fig.4 shows an assembled Box Panel integrated with deck made of carbon fibre with gusset plate construction in another embodiment of present invention.
Fig.5 shows an assembled Box End-panel integrated with deck made of carbon fibre with gusset plate construction in another embodiment of present invention.
Fig.6 shows an assembled Ramp integrated with deck made of carbon fibre with gusset plate construction in accordance with the present invention.
Fig.7 shows a close-up view of the gusset plate and joint connection.
DETAIL DESCRIPTION
A Man-Portable Assault truss Bridge to provide a means for enabling personnel or army or mules or others to pass quickly across gaps e.g. streams, within damaged or partially collapsed buildings or dangerous within around the construction site, which can be

rapidly assembled and deployed on site in minutes, typically within a confined space and entirely from the home' side of the gap projected in cantilever fashion. Not least but may also use to connect two building towers. The Bridge is Pre-engineered modular construction is of the "Deck Type" truss bridge. The roadway being formed using two tread way on the top of main load carrying Panels.
The modular Box-Panel is designed as a standard length box truss space frame structure and truss elements are square solid rod that have great buckling resistance & as a tie section using high tensile lighter material principally of a fibre reinforced polymer material that have high strength and stiffness. Hence despite being lightweight, due to high strength to weight ratio, these man-portable box-panels are able to take light vehicular loads in addition to heavy pedestrian traffic. Each modular box-panel being bolt jointed to its neighbour box-panel to get linear increment and achieve the desire length/span. Finally this results a single trade way segment, which is utilised as load bearing element/decking element of bridge.
Each unit of bridge is easy to handle and storage. Any unit of bridge to be carried to any specific location can be done easily by one man of crew by simply placing them over shoulder and same units can be rapidly assembled manually without using any heavy equipment into a bridge of desire length using less number of components. Such design is very much useful as foot over bridge or safe foot traffic movement of army soldiers and may be used for transportation of army equipment or certain military operations, movement of light vehicles, movement of animals, fire fighting, disaster relief operation and recovery operations etc. as an assault bridge system to use in certain remote areas in hilly terrain, jungles, disturbed or effected zone on rough or rocky or muddy ground.
With reference to the drawings in general and to Fig. 1 in particular, the truss and panel system embodying the techniques of the subject invention in illustrated way. The

truss and panel system in one embodiment includes two trusses, a plurality of rectangular shaped panels and a plurality of cross-connectors, which interconnect the two trusses and define a gap for insertion of the panels so as to support the panels by the cross-connectors and the trusses, Fig.2.
A box panel (1) in Fig.4/End box panel (2) in Fig.5 of the bridge modular system preferably includes solid rods (1/1), decking boards (1/5), non-metallic gussets (1/6), metal gussets (1/8), sway braces (4) andjoints (7). In apreferred embodiment, the solid rod (1/1), decking board (1/5) and/or non-metallic gussets (1/6) are made of carbon fibre. A carbon fibre box panel includes four type carbon fibre solid rods, which are Panel Longitudinal Chord (1/1), Panel Lateral Chord (1/2), Panel Diagonal Chord (1/3) and Panel Vertical Chord (1/4). One end of carbon fibre solid rod is perpendicularly bonded to the one end of another carbon fibre solid rod and the carbon gusset (1/6) is bonded at each of that joints. Metal gussets (1/8), which are in-built connected with metal connectors are bonded over carbon gussets (1/6) to form the provision of Panel (l)-Panel (1) or Panel (l)-Bracing connections (4). When four Longitudinal Chords along with supportive other Chords and Gussets are bonded in a row, forms a box frame structure (1) and (2).
Accordingly, by interconnecting two trusses with a plurality of cross-connectors and supporting panels, a bridge or conveyance surface is formed. Thus the bridging system of the present invention can thereby be quickly and easily assembled for permanent or temporary installation/ erection.
Similarly, a ramp (3) in Fig. 6 at both side of modular bridge system preferably includes solid rods (3/1), decking boards (3/5), non-metallic gussets (3/6), metal gussets (3/8) andjoints (7). In a preferred embodiment, the solid rod, decking board and/or non-metallic gussets are made of carbon fibre. A carbon fibre ramp includes four type carbon fibre solid rods, which are Ramp Longitudinal Chord (3/1), Ramp Lateral Chord (3/3) and Ramp Vertical Chord (3/4). One end of carbon fibre solid rod is perpendicularly

bonded to the one end of another carbon fibre solid rod and the carbon gusset (3/6) is bonded at each of that joints at each side. Metal gussets (3/8), which are in-built connected with metal connectors are bonded over carbon gussets (3/6) at nominal plane parallel and to one side at end of the box-panel to form the provision of End-Panel (2) to Ramp (3) connections.
In such an arrangement, the metal gusset (1/8), (2/14), (3/8) plate may be riveted and/or bolted to the adjacent surfaces of non-metallic gussets (1/6), (2/12), (3/6) for excellent bearing strength. These end fittings in Fig. 7 may be provided at each end of the structure so as to enable any desired number of the box-panels (1) or (2) to be joined end-to-end. And also end-panels (2) to ramp (3) to be joined in similar fashion. In one end of the end-panel (2) structure fittings may, preferably, be smaller than the panel for fitting with adjacent ramp (3).
In another embodiment, sway braces (4) in Fig. 3 are connected diagonally with the box panels to form the two tread-way segment. The removable sway braces of two tread way Assault Bridge includes a tube connected with removable connectors, which are preferably made of carbon fibre.
Yet another embodiment, hand-rail-post (5) along with hand rails (6) connected at outer edge of top deck plate (1/5) for pedestrians and demarcation for movable vehicles. In a preferred embodiment, the hand-rail-post is made of fibre-reinforced material of light weight.
Conveniently, in a box-panel manufactured of square solid rods, the end fittings may have a rectangular portion attached in the end of each assembled upper and lower panel-longitudinal-chord and a protruding flange and/or socket portion for attachment to mating flange or sockets of fittings similarly attached to an adjacent box-panel. The mating

flanges or sockets have opening for insertion of metal bolt or pin to attach adjacent box-panel together.
In another embodiment, a top surface of box-panel and ramp may be covered with decking board as integrated part of the structure.
The various square solid rods of the box-panels and the deck sheet of decking-board may comprise laying up alternate layers of longitudinal and lateral or diagonal extending carbon fibres pre-impregnated with resin on lightweight core, on suitably dimensions tools, curing the rods member and board structure under defined pressure. The core may be manufactured using hollow glass bubbles with resin.
It has been found that this principle of construction provides alight weight solid rods and decks of high strength in which the longitudinal fibres carry the main tension and compression loads and the diagonal and lateral fibres along with lightweight core provide sufficient stiffness to prevent buckling. Which is desired for "Deck-Type" lightweight truss bridge design.
In fabricating the box-panel from solid rod formed as above described, the various truss members are cut to length and located as per Fig. 2 and joining the truss members. Bonding adhesive is applied where required and adhesive is cured with the rod assembly under pressure to form the truss member. A requisite number of truss members made and assemble the same side by side to provide desired dimension of box-panel structure.
To secure the cross-connectors between the trusses, both ends of the cross-connectors include an assembly, as best shown in Fig.7.
Referring to Fig. 1, the weights and dimensions of components for "MAN PORTABLE ASSAULT BRIDGE" including item number may be summarised as follows:


Item No. Item Sub Item Weight in Kg Dimensions in mm
1 Box-Panel 21.9 1524x524x524
1/1 Panel Longitudinal Chord
1/2 Panel Lateral Chord
1/3 Panel Diagonal Chord
1/4 Panel Vertical Chord
1/5 Short Deck
1/6 Fibre End Gusset
1/7 Fibre Centre Gusset
1/8 Metal End Gusset
2 Box-End-Panel 20.5 1524x524x524
2/1 End-Panel Longitudinal Chord Short
2/2 End-Panel Longitudinal Chord Long
2/3 End-Panel Lateral Chord
2/4 End-Panel Diagonal Chord Short
2/5 End-Panel Diagonal Chord Medium
2/6 End-Panel Diagonal Chord Long
2/7 End-Panel Vertical Chord Short
2/8 End-Panel Vertical Chord Medium
2/9 End-Panel Vertical Chord Long
2/10 Short Deck
2/11 Long Deck
2/12 Fibre End Gusset
2/13 Fibre Centre Gusset
2/14 Metal End Gusset
3 Ramp 5.7 500x700x
3/1 Ramp Longitudinal Chord Short
3/2 Ramp Longitudinal Chord Long
3/3 Ramp Lateral Chord
3/4 Ramp Vertical Chord
3/5 Long Deck
3/6 Fibre End Gusset
3/7 Fibre Centre Gusset
3/8 Metal End Gusset
4 Sway Brace 0.4 860x20x20
5 Hand Rail Post 0.6 500x1000
6 Railing 1 40x9000
7 Joint Bolt M10x50 0.075 M10x50
8 Rubber mat 5 500x500x9000


Although the foregoing description of the present invention has been shown and described with reference to particular embodiments and applications thereof, it has been presented for purposes of illustration and description and is not intended to be exhaustive or to limit the invention to the particular embodiments and applications disclosed. It will be apparent to those having ordinary skill in the art that a number of changes, modifications, variations, or alterations to the invention as described herein may be made, none of which depart from the spirit or scope of the present invention. The particular embodiments and applications were chosen and described to provide the best illustration of the principles of the invention and its practical application to thereby enable one of ordinary skill in the art to utilize the invention in various embodiments and with various modifications as are suited to the particular use contemplated. All such changes, modifications, variations, and alteration should therefore be seen as being within the scope of the present invention as determined by the appended claims when interpreted in accordance with the breadth to which they are fairly, legally, and equitably entitled.

We claim :
1. A prefabricated modular deck type assault truss bridge, comprising of:
a modular box panel (1), (2) and bridge modular system including plurality of solid rods, decking boards, non-metallic gussets, metal gussets, joints; wherein the said solid rods, decking board and/or non-metallic gussets are made of carbon fibre; and wherein the said modular Panel (1) and End Panel (2) is fabricated as standard length box truss space frame structures with the truss elements of square solid rod & tie section using high tensile lighter material principally of a carbon fibre reinforced plastic material having higher strength and stiffness.
2. The prefabricated modular deck type assault truss bridge as claimed in Claim 1, wherein the said plurality of rectangular shaped panels and end panels and ramp manufactured of square solid rods, the end fittings have a rectangular portion attached in the end of each assembled upper and lower panel-longitudinal-chord and a protruding socket portion permanently exist for attachment to mating sockets of fittings similarly attached to an adjacent box-panel and ramp.
3. The prefabricated modular deck type assault truss bridge as claimed in Claim 2, wherein the said mating sockets have opening for insertion of metal bolt to attach adjacent box-panel together.
4. The prefabricated modular deck type assault truss bridge as claimed in Claim 1, wherein the said plurality of rectangular shaped panels and the plurality of cross-connectors which interconnect the trusses defines a gap for insertion of the panels so as to support the panels by the cross-connectors and the said trusses by sway brace (4).
5. The prefabricated modular deck type assault truss bridge as claimed in

Claim 1, wherein the said carbon fibre box panel includes four type carbon fibre solid rods, which are longitudinal chord, lateral chord, diagonal chord and vertical chord, wherein each rod has a first end and a second end, and at least one end of carbon fibre solid rod has perpendicular bonding to the second end of carbon fibre solid rod, and wherein the carbon gusset banded at the joints.
6. The prefabricated modular deck type assault truss bridge as claimed in Claim 1, wherein the said carbon fibre box panel includes two type carbon fibre decking board, which are short deck and long deck, wherein each deck has a first end and a second end, and at least one end of carbon fibre deck has perpendicular bonding to the top surface of carbon fibre solid rod, wherein each carbon fibre solid rod is lateral chord.
7. The prefabricated modular deck type assault truss bridge as claimed in Claim 2, wherein each carbon gusset banded with metal gusset perpendicular to solid rod having joint connection at top and bottom of the longitudinal chord.
8. The prefabricated modular deck type assault truss bridge as claimed in Claim 1, wherein the said joint connector is located at atleast one of the first end and the second end of each of longitudinal top and bottom chord carbon fibre solid rod mated with lateral and /or diagonal and /or vertical rods; and wherein at least four longitudinal chord solid rods are joined by the joint connectors forming a space frame structure.
9. The prefabricated modular deck type assault truss bridge as claimed in Claim 1, wherein the said solid rod and decking board made of carbon fibre rung is filled with a core material wherein core manufactured using hollow glass bubbles with resin.
10. The prefabricated modular deck type assault truss bridge as claimed in Claim 1, wherein the said solid rod and decking board made of carbon fibre rung is filled with a core material.

11. The prefabricated modular deck type assault truss bridge as claimed in Claim 1, wherein by interconnecting two trusses with a plurality of cross-connectors and supporting panels by the bottom chords of the trusses and the cross-connectors between the trusses and a ramp, the said bridge or conveyance surface is erected.
12. The prefabricated modular deck type assault truss bridge as claimed in Claim 1, wherein the said assembly forms an access ramp to cross from one area to another area of same or higher elevation than area.
13. The prefabricated modular deck type assault truss bridge as claimed in Claim 1, wherein the said system is configured to form a bridge between areas of different elevations or to provide a smooth surface for traveling across an uneven terrain.
14. The prefabricated modular deck type assault truss bridge as claimed in Claim 1, wherein the said system is configured to form a bridge construction is of the "Deck Type" truss bridge, the roadway being carried using 'one-tread-way' or 'two-tread-way' or three-tread-way' or any multiple combination using box panel.
15. The prefabricated modular deck type assault truss bridge as claimed in Claim 14, wherein the said system is configured the One-tread-way to create a walking Surface, two-tread-way to create vehicular movement and three-tread-way to create walking and vehicle both at single time.
16. The prefabricated modular deck type assault truss bridge as claimed in Claim 1, wherein the said top and bottom cross-connectors extend between the trusses include a central flat plate portion.
17. The prefabricated modular deck type assault truss bridge as claimed in Claim 1, wherein the said central rib extends along the entire length of the plate portion and

beyond the terminal edges of the plate portion the secured to the plate portion, and extending perpendicular to the plate portion.
18. The prefabricated modular deck type assault truss bridge as claimed in Claim 17, wherein the height of the said rib is less than the height of the panels and the length of the plate portion is dimensioned to define the size of the spacing between the trusses so as to accommodate the panels.
19. The prefabricated modular deck type assault truss bridge as claimed in Claim 1, wherein said bridge includes removable handrails post along with railing wherein post are made of fibre material.
20. The prefabricated modular deck type assault truss bridge as claimed in Claim 1, wherein in order to secure the cross-connectors between the trusses, both ends of the cross-connectors include an assembly.