It was raised in 1912-14 as part of a grade separation project.

As such, there was an urgent need for grade separation.

This can be considered a type of grade separation structure on the road.

This grade separation was agreed in 1890 after much litigation.

In September 2008 a contract was awarded to provide a grade separation.

The bridge is good evidence of the grade separation effort early in the twentieth century.

Usually it is separated from other traffic by a concept called grade separation.

Grade separation of the road has also been proposed.

The grade separation was completed for $142m in 7 months.

The bridge carries both road and rail traffic, without grade separation.

Traffic engineers usually refer to the latter as a grade separation.

The grade separations had been contemplated as early as 1942.

This project also included grade separation of the existing at-grade intersections.

The city also encouraged the railroads to build grade separation throughout the city.

For safety, grade separations are almost always required.

Additionally, as there is no grade separation involved, costs are considerably less than that of an interchange alternative.

The road level crossing at Sunshine was removed when grade separation was carried out in 1961.

Bridges, tunnels, or a combination of both can be built at a junction to achieve the needed grade separation.

An overpass and underpass together form a grade separation.

Other grade separations are also still under consideration.

The grade separation took place in 1933.

A grade separation has been proposed by Network Rail.

In 1923, the city of Detroit and the railroad began a plan to build 22 grade separations; both parties agreed to share the cost.

Intersections do not use grade separation (they are at-grade) and roads cross directly.

The grade separation at Emerson Crossing was achieved by a 3 span bridge.