BW7 Valley Bridge

In the context of the upgrading project of the National Road B29 at Stuttgart – Aalen, bypassing the community of Mögglingen, about 65 km west of Stuttgart in Germany, was suggested. As part of the overall project, the BW7 valley bridge over river Lauter was recently constructed and delivered to traffic. METE SYSM participated in the preparation of all the individual stages of the detailed design study in collaboration with the design office Harrer Ingenieure for the contractor of the project Wolff & Müller and provided support to the contractor during its construction with over 100 drawings in the final stage.
The bridge with increased technical and aesthetic requirements was designed with the highest level of detail, also incorporating a very large number of Technical Specifications (Richtzeichnungen BAST) applied for roadbridges in Germany.
The bridge consists of two separate branches (North and South) with an intermediate joint of 10cm. The superstructure is continuous with seven spans (271,5m total lengh on the bridge axis) made of cast in-situ prestressed concrete. Each separate branch was constructed in 3 stages (2, 2 & 3 spans) starting from the eastern abutment with construction joints at 20% of the span.
In plan, the bridge horizontal alignment is on a circular arc with a radius of 1.350m, while the red line is straight, with a slope of 0,50%, at a height ranging between 8,0 and 10,0m from the natural terrain. The piers which have a “peanut” cross section with external dimensions of 3,8×1,65m and clear heights of the ranging between 6,0 and 8,0m, are founded on pile caps. The superstructure rests vertically on bearings either free sliding, guided (longitudinally free) or fixed (transversely and longitudinally), with expansion joints only at the abutments.
The cross section of the girder is a beam-slab with constant height of 2,0m, web width of 3,8m, and a total slab width of 14,25m (upper flange) with a 4% transverse inclination. The long arising cantilevers at either side (5,0 ÷ 5,5 m) are supported at almost every 4,0m with oblique steel buttresses of hollow circular cross section. The total width of each branch of the highway carries one-way traffic of 2 traffic and 1 emergency lane and sidewalks on both edges. On the sidewalks safety barriers, street lighting poles and curved sound curtains of special aesthetics are provided. Also, insulation of the deck with a special membrane and drainage of the deck with longitudinal and vertical drainage pipes is provided.

Eastern Inner Ring Road

In the context of the upgrading project of the existing Eastern Inner Ring Road of Thessaloniki, the construction of an Elevated Expressway (Flyover), next to the existing ring road (between I/C K5 and I/C K10) at an overlying level is suggested. The project will significantly decongest the existing ring road, which will also be upgraded to serve local and heavy traffic.
The entire project is extremely complex and technically demanding, judged as “Special and Important at National Level” planned to be constructed with a Public-Private Partnership Contract. METE SYSM has prepared the preliminary studies of the technical works for the whole project, which are already approved and participates in the preparation of the predesigns.
The most important and also special part of the project is the construction of an Elevated Bridge with a total length of 4.000m between I/C K6-Neapoli and I/C K8-Triandria. At the predesign stage, our office is responsible for the first section of this bridge (Bridge T9a) with a total length of 2.000m between I/C K6 and I/C K7, next to the existing Ring Road on the “Sheikh-Shu” forest side. In plan, the bridge alignment moves on straight lines along with circular arcs (R=1.100–1.200m) and corresponding transition curves. In elevation, the red line exceeds that of the adjacent ring road and the natural terrain usually by 7,0 – 8,0 m, but also 11,0 – 12,00 m, except for the areas of two valley bridges with red line elevation 25,0 – 30,0m above the ground.
The box-shaped cross-section is 2,5 m deep with a total width of 22,2 m, carrying bilateral traffic (2+2 lanes and emergency lanes). The net traffic width is 9,7m in each direction with an intermediate rigid safety barrier. At the two edges of the section, safety barriers, sound curtains and lighting poles are provided. The deck is also provided with insulation special membranes and a drainage system with longitudinal and vertical pipes.
Along the 2.000m of the bridge, a total of nine (9) independent substructures are formed, with lengths between 170,0m and 235,0m. The superstructures are continuous, with four to five spans of about 45,0 m and expansion joints at the ends of the subsections. The piers are single-column, of variable length, founded on shafts. The superstructure rests on bearings in the piers where expansion joints are provided and is monolithically connected to the rest of the piers, forming a case of semi-integral bridges.

Motorway Kleidi – Eyzonoi

It is about the final study for the road, Interchanges as well as signage and safety for the construction of the subsection I/C Axios – I/C Agios Athanasios of the Kleidi – Evzoni section of the PATHE Motorway which concerning the east bound of the PATHE Highway, 14km in total, with two lanes per direction and an auxiliary lane, including a section of the westbound motorway, servise roads network of 32.8 km long sum., three interchanges, the I/C Halastra – Axios, the I/C Anatolikou and the completion of I/C Agios Athanasios, three at grade intersections and finally the complete signage and safety study for the whole project.

Railway Viaduct T12

It is about a seismically isolated railway viaduct with a total length of 800,0m, a width of 13,9m and a maximum pier height of 38,7m. The superstructure of concrete is continuous, single-cell box girder, longitudinally and transversely prestressed, constructed using the launching formwork system (“movable scaffolding”). Two single-action fluid viscous dampers at each abutment and pier to deck connection via lead-rubber bearings (LRB’s). Pile foundation.

Interchange K16

This project concerns a detailed design for the operation of K16 Interchange (without the Pontou overpass), by forming roundabout at the intersection of Internal Ring road of Thessaloniki and Pontou Str. And k16 ramps, until the completion of all road works and detail signage design for the whole project, with the roundabout.
The project relates to a two-lane and an auxiliary lane, Motorway 2.5 km long, 4.5 km long junction section, 800 m long interventions on a two-lane Ring Road, and a multi lane roundabout with five accesses.

Overpass Bridge T17

For the construction of the subsection I/C-Axios – end of I/C Agios Athanasios of the road axis P.A.TH.E., final studies for a large number of technical works were prepared. In the context of the whole project, METE SYSM prepared the final study of the overpass bridge T17 from CH. 0+579,65 to CH. 0+868,27 of branch No 2 at I/C-Axios.
The one branched overpass bridge is configured by a continuous superstructure with eight spans (total lengh 289,0m on the bridge axis) made of cast in-situ prestressed concrete. The bridge is to be constructed in 7 stages starting from the eastern abutment with construction joints at 20% of every span.
In plan, the bridge horizontal alignment is on a circular arc with a radius of 290m, while the red line is also on a vertical arc with a radius of 4.500m, at a height ranging between 8,0 and 14,0m from the natural terrain. The piers which have clear heights ranging between 9,0 and 11,0m, have a single-column configuration and a cross section of a regular octagon inscribed in a circle with 2,0m diameter and are founded on pile caps. The superstructure is monolithically connected to the 5 central piers M2 to M6, resting on bearings at the outermost piers M1 & M7 as well as at the abutments, forming a case of semi-integral bridge with satisfactory behavior for both vertical as well as horizontal loads, with expansion joints only at the abutments and with reasonable displacements.
The cross section of the girder is single box-shaped with a height of 2,3m, a total width of 11,25m (upper flange) with a 6% transverse inclination, carrying one-way traffic of the second branch of the Interchange, with 2 traffic & 1 emergency lane and sidewalks on both edges. Safety barriers, street lighting poles, insulation of the deck with a special membrane and drainage of the deck with longitudinal and vertical drainage pipes are also provided.

Motorway Vertical Axis

It is about the final study for Road and interchange design, including signage for the subsection Agios Athanasios – Krinides of the section 61.5 Drama – Kavala of Egnatia Odos.
Design of highway with a total length of 11 km, including one interchange, consist of three roundabouts and service roads of sum length 14,5km.

PATHE Motorway

It is about preliminary and final study for motorway, interchanges as well as signage and safety for the construction of the subsection I/C Agia Marina Stylida – I/C Raches of the Skarfia- Raches section of the PATHE Motorway, Ch. 12+000 – 31+234,97.
The project concerning the 19.4km motorway, with two separate carriageways, twe lanes per direction and LEA, which bypasses Stylida, Karavomilos and Achinos with three tunnels, four viaducts, one bridge overpasses and eleven underpasses, a network of sidewalks and vertical roads on either side of the highway 33.70 km., three interchanges I/C Agia Marina Subway, I/C Stylida – Karavomilou and I/C Karavomilou.
Three at grade intersections and complete signage and safety study for the whole project.