icon of Major Renovations to Metropolitan Expressway Structures

Major Renovations to Metropolitan Expressway Structures

Making Major Renovations to Metropolitan Expressway Structures

We carry out renovation projects to ensure that the Metropolitan Expressway remains highly reliable over the long term.

Metropolitan Expressway Renovation Program

On January 15, 2013, a committee that was formed to research the way that major renovations to Metropolitan Expressway structures should be carried out passed along its recommendations to Shutoko. Renovations plans were drawn up based on these proposals, and the Ministry of Land, Infrastructure, Transport and Tourism approved the plans on November 20, 2014.

Map showing sites where major renovations are being made

Percentage of years elapsed since opening

Percentage of years elapsed since opening

Program Type:Major Renovation

Section Length Opened Program Period
The Pier Section of Higashi-Shinagawa
and Reclamation Area of Samezu
1.9km FY1963 FY2014~2026
Daishi Bridge 0.3km FY1968 FY2015~2023
Ikejiri and the Sangenjaya Entrance/Exit 1.5km FY1971 FY2015~2027
Takebashi and Edobashi junctions 2.9km FY1964 FY2015~2028
Ginza and Kyobashi Entrance/Exit 1.5km FY1962 FY2015~2028
Sub Total 8km    

Program Type:Major Repairs

Section Length Opened Program Period
Route 3 Shibuya Line, Route 4 Shinjuku Line 55km FY2014~2026
Major renovations +
Major repairs Total
63km

Renovations to the Pier Section of Higashi-Shinagawa
and Reclamation Area of Samezu

More than 50 years have passed since The Pier Section of Higashi-Shinagawa and Reclamation Area of Samezu on the Route 1 Haneda Line were opened in 1963. Although regular inspections and repairs have been carried out, serious damage has occurred due to severe use conditions and the extremely corrosive environment, and the structure requires renovation (reconstruction). Consequently, to ensure long-term durability and future maintenance management, this zone is now being rebuilt in a location that is in a certain distance from sea level, crossover structures (public road, etc.) and parallel to the Tokyo monorail. Moreover, to improve traffic safety, the road width will be changed from 17m to 18.2m.

  • Detour construction status (June 2017)
    Detour construction status (June 2017)
  • Image of the renovated line
    Image of the renovated line

Ensuring Traffic Flow by the Detour Pass

To reduce the effect on traffic, construction of the detour is set to ensure traffic flow. During the Tokyo Olympics / Paralympics 2020, The detour is planned to be used as the inbound lane of Route 1 Haneda Line, and after the outbound lane is renovated, it will be used as the future inbound lane. Use of the existing structure for both inbound and outbound traffic is not planned.

  • Image of detour planned for the Route 1 of the Haneda Line
  • Image of the renovated line
    Image of the renovated line

Renovations to Daishi Bridge

The expressway Daishi bridge which crosses the Tama river, has many fatigue cracks throughout the whole bridge, due to extreme use condition caused by the heavy traffic of many cars. For renovation, replacement of the whole bridge has been determined, in order to ensure long-term durability, maintenance properties, and safety.

Image of the renovated Daishi bridge
Image of the renovated Daishi bridge