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A cloverleaf interchange is a two-level interchange in which all turns are handled by slip roads. To go left (in right-hand traffic; reverse directions in left-driving regions), vehicles first continue as one road passes over or under the other, then exit right onto a one-way three-fourths loop ramp (270°) and merge onto the intersecting road.
Aerial view of a succession of partial cloverleaf interchanges on I-405 in Orange County, California. The closest one in this image, at Brookhurst Street in Fountain Valley, was originally a full cloverleaf interchange, remnants of which are still visible. There are B4 designs in Alberta: Deerfoot Trail & 17 Ave in Calgary
A partial cloverleaf interchange (often shortened to the portmanteau, parclo) is an interchange with loops ramps in one to three quadrants, and diamond interchange ramps in any number of quadrants. The various configurations are generally a safer modification of the cloverleaf design, due to a partial or complete reduction in weaving, but may ...
The cloverleaf interchange between US 131, M-6 and 68th Street in Cutlerville, Michigan, United States, shows many of the features of controlled-access highways: entry and exit ramps, median strips for opposing traffic, no at-grade intersections and no direct access to properties.
An example of the potential complexity of grade separation, seen in the Jane Byrne Interchange in Chicago Seven various overpasses for grade separation in Spain near Barcelona Rail-rail grade separation in Xiaoshan, China The concept of grade separation includes all transport modes, such as a simple pedestrian bridge over rail tracks.
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A two-level interchange in which turns are handled by eight total ramp or slip roads, four of which form loops that give the interchange the shape of a cloverleaf from the air. Each ramp allows traffic from one direction of a roadway to access only one direction of the crossroad: e.g. from northbound to eastbound while a separate ramp connects ...
Another two-lane freeway section is a north bypass of Bowling Green with a grade separated crossing at Business US Route 61 and a diamond interchange at U.S. Route 61 (intersections are on 54) that has grading for a full cloverleaf interchange. The forementioned project will not include improvements to this section of US 54.