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The Cloverleaf (1592 words) |
 | Cloverleaf interchanges were comparatively cheap - the only other free-flow intersection with less bridges involved is a large traffic circle, which, (luckily) early engineers realized, would be a huge disaster if placed at the intersection of two high-speed freeways. |
| To the left is a picture (from terraserver-usa.com) of I-787 (to the south and east), NY 7 (to the west and east), and NY 787 (to the north), in Green Island, north of Albany, NY. |
| I-95 at DE 141 might have been a normal cloverleaf had I-495 and I-295 not come in so close to the north; their addition adds a few extra ramps to the usual design. |
| Cloverleaf interchange - Wikipedia, the free encyclopedia (933 words) |
| A cloverleaf interchange is a two-level interchange in which left turns (in countries that drive on the right) are handled by loop roads (US: ramps, UK slip roads). |
| The cloverleaf was patented in the United States by Arthur Hale, a civil engineer in Maryland, on February 29, 1916. |
| The cloverleaf was patented in Switzerland on October 15, 1928. |
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