Enforcement at intersections with Expressway
A / H lamp
The A ramp uses the shield (mud pressure) method because it needs to cross the Keiyo Road that is in service.
Directly below the Keiyo Road, built by cutting the maulable members (FFU piles) on the Yamadome wall associated with the construction of the outer ring main line box
Directly below the Keiyo Road, built by cutting the maulable members (FFU piles) on the Yamadome wall associated with the construction of the outer ring main line box
[A lamp] (two lanes in one direction)
Machine diameter: 13.27m
Construction extension: 509m
[H lamp] (2 lanes in 1 direction)
Machine diameter: 13.26m
Construction extension: 347m
D lamp part
The D ramp crosses directly underneath the prefectural road that is in service, and since it will be constructed on the sharp curve part of R60, it adopts the harmonica construction method that can suppress the sharp curve construction and road subsidence.
Machine specifications: 3.98m x 3.69m
(Promote 5 boxes)
Curve radius: 61.9m
Construction extension: 65.0m
By constructing an outer ring structure in the underground part of the current road by switching (detouring) the Keiyo Road
Before detour
After detour
In-bound recovery
Out-bound line recovery (current status)
