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The FDR Drive (officially referred to as the Franklin D. Roosevelt East River Drive, and sometimes known as the FDR) is a freeway-standard parkway on the east side of the New York City borough of Manhattan. It starts just north of the Battery Park Underpass at South and Broad Streets and runs along the entire length of the East River, from the Battery Park Underpass under Battery Park – north of which it is the South Street Viaduct – north to 125th Street / Triborough Bridge exit, where it becomes the Harlem River Drive. All of the FDR Drive is designated New York State Route 907L (NY 907L), an unsigned reference route. The highway is mostly three lanes in each direction, with the exception of a small section underneath the Brooklyn Bridge where it is one lane southbound and one lane northbound. A section near the Queensboro Bridge interchange (exit 12) is also narrowed to two lanes on the northbound side. By law, the current weight limits on the FDR Drive from 23rd Street to the Harlem River Drive in both directions is posted . Buses are not allowed to use the roadway north of 23rd Street, because of clearance and weight issues. All commercial vehicles (including trucks) are banned from all sections of the FDR Drive. The FDR Drive features a mix of below-grade, at-grade, and elevated sections, as well as three partially covered tunnels. Exit 6 was temporary closed after the 9/11 attacks, and was permanently removed in 2014 after the NYSDOT received notification from the NYPD that it would not be re-opening for security reasons. ==Route description== FDR Drive starts at the southern tip at South and Broad streets and becomes elevated to a point between Jackson Street and Gouverneur Slip, near the Manhattan Bridge exit. From there it is at street level, until it passes underneath the Houston Street overpass, then continues at grade. Once past the 18th Street curve, it becomes elevated briefly until 25th Street. At 30th Street the southbound roadway again becomes elevated; the northbound roadway is at street level when passing through Waterside Plaza between 23rd and 34th streets, then realigns with the southbound roadway above ground. The roadway quickly dips onto street level after passing 42nd Street, the southbound roadway is inside a later structure resembling a tunnel while the northbound roadway appears to be on the outside of the tunnel. This is due to the construction of the United Nations Headquarters on a platform above the FDR which is at grade. From 51st to 63rd streets, in this tunnel, the southbound roadway is raised and runs over the northbound roadway, for access to the northbound exit/entrance to Queensboro Bridge. North of 63rd Street, the roadways become level and run underneath the pilotis of the New York-Presbyterian Hospital, while remaining at grade. From 79th to 90th streets runs a final enclosed, at-grade portion; the southbound roadway is again raised over the northbound roadway in a short segment of the tunnel. The promenade of Carl Schurz Park was built over the highway, near Gracie Mansion. Except for a short elevation over the 96th Street interchange, the remaining portion of the roadway from this tunnel to the 125th Street interchange is at grade. The East River Greenway runs below, beside or above the motor road, except between 34th and 63rd streets. A plaque dedicating the East River Drive is visible on the southbound roadway before entering the Gracie Mansion tunnel at 90th Street. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Franklin D. Roosevelt East River Drive」の詳細全文を読む スポンサード リンク
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