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General Information

Completion: 2017
Status: in use

Project Type

Awards and Distinctions

2019 finalist  


Location: , ,
Part of:
Coordinates: 34° 51' 52.47" N    135° 15' 56.15" E
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Technical Information


total length 442.200 m
span lengths 72.800 m - 3 x 100.000 m - 68.800 m
deck deck width 24.200 m
girder depth 4.000 m
roadway / carriageway width 2 x 10.535 m
foundations P3 width 14.000 m
pier P1 diameter 5.500 m
height 54.200 m
pier P2 diameter 5.500 m
height 65.100 m
pier P3 diameter 5.000 m
height 81.200 m
pier P4 diameter 5.500 m
height 69.700 m
pylons thickness 1.35 m
pylon height (above deck) 8.500 m


piers precast reinforced concrete
deck slab prestressed concrete
abutments reinforced concrete
bottom flange prestressed concrete
webs fiber reinforced concrete

Case Studies and Applied Products

New combination of extradosed and butterfly web: Shin-Meishin Mukogawa Bridge

New combination of extradosed and butterfly web: Shin-Meishin Mukogawa Bridge

The Shin-Meishin Mukogawa Bridge is located in Japan, north of Kobe, between the Takatsuki and Kobe junctions on the Shin-Meishin Expressway. The 442 m long extradosed bridge with a continuous rigid frame an ... [more]

Box girder design and erection

The superstructure of the extradosed bridge consists of two parallel box sections which are connected by a diaphgragm at the piers as well as through a continuous deck slab. The webs of box sections are designed as butterfly webs made of precast high-strength (80 MPa) fiber-reinforced precast concrete elements, 2.900 meters wide and 15 cm thick, which connect to the upper and bottom flanges of the box through dowels. They are also prestressed diagonally. The box girders were erected by cantilevering out from the piers first laterally to achieve the full width of 24 meters on a 5.5 meter diameter pier and then longitudinally in block lengths of 6.0 meters using a launching gantry.

Pier design and erection

The piers are made of single-shaft hollow circular section with a diameter of 5.00 m (P3) or 5.500 m (P1, P2, P4). The shortest pier, P1 is 54.200 meters tall while the highest, P3 and located in the middle of the river, is 81.200 meters high. Pier P4 is supported on a rectangular flat footing while the other piers are supported by circular caisson foundations. The piers were erected using the SPER method using half-precast reinforced concrete elements 2.0 meters high with embedded hoops and ties. Two of semi-cylindrical elements were used to make up the hollow circular section of the piers. They are pre-assembled and then lifted onto the already erected part of the pier. This method reduces the amount of formwork necessary on-site considerably, as the outer and inner pannels of the precast elements serve as formwork for most of the perimeter. Formwork is only necessary where the elements are joined in-situ. The hollow spaces between the outer and inner panels are also filled in.

Relevant Web Sites

Relevant Publications

  • Schlaich, Mike / Apitz, Andreas / Duclos, Thierry / Kasuga, Akio / Romo Martín, José / Montens, Serge / Sankaralingam, Chithambaram / Sobrino, Juan (2019): Extradosed Bridges. International Association for Bridge and Structural Engineering (IABSE), Zurich (Switzerland), ISBN 978-3-85748-168-0, pp. 125.


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