Monitor–Merrimac Memorial Bridge–Tunnel
| Monitor–Merrimac Memorial Bridge–Tunnel | |
|---|---|
 |
|
| Carries | 4 lanes of  I‑664
|
| Crosses | Hampton Roads |
| Locale | Suffolk, Virginia to Newport News, Virginia |
| Maintained by | Virginia Department of Transportation |
| Characteristics | |
| Design | Composite--Low-level Trestle, Double-tube Tunnel, Manmade islands |
| Total length | 4.6 miles (7.4 km) |
| Clearance above | 14'6" (4.42 m) |
| History | |
| Opened | April 30, 1992 |
Monitor–Merrimac Memorial Bridge–Tunnel (MMMBT) is the 4.6 mile-long (7.4 km) Hampton Roads crossing for Interstate 664 in the southeastern portion of Virginia in the United States. It is a four-lane bridge–tunnel composed of bridges, trestles, man-made islands, and tunnels under a portion of the Hampton Roads harbor where the James, Nansemond, and Elizabeth Rivers come together.
It connects the independent cities of Newport News on the Virginia Peninsula and Suffolk in South Hampton Roads and is part of the Hampton Roads Beltway, a circumferential interstate highway which links the seven largest cities of Hampton Roads.
The MMMBT, completed in 1992 provided a third major vehicle crossing of the Hampton Roads harbor area, supplementing the Hampton Roads Bridge–Tunnel which carries Interstate 64 between the independent cities of Hampton and Norfolk, and the James River Bridge connecting the independent city of Newport News and Isle of Wight County in the South Hampton Roads region. All three facilities are toll-free.
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