Interstate 68
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Interstate 68 is an interstate highway in the United States. It runs from Morgantown, West Virginia at Interstate 79 to Hancock, Maryland at Interstate 70, completely replacing the pre-1989 U.S. Highway 48. Interstate 68 is Corridor E of the Appalachian Development Highway System
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1 Major Cities along the route |
Length
| Miles | km | state | |
| 31 | 50 | West Virginia | |
| 81 | 131 | Maryland | |
| 112 | 181 | Total | |
Major Cities along the route
Intersections with other Interstates
Notes
- The main reason for Interstate 68's construction was to create, in conjunction with Interstate 79 between Morgantown and Washington, Pennsylvania, a free bypass for the I-70 portion of the Pennsylvania Turnpike.
- A 340-foot (104 m) deep cut in the top of Sideling Hill was made to allow the highway to pass through six miles (10 km) west of Hancock. This exposed a syncline, a trough-shaped fold in the rock of Sideling Hill. An exhibit center was built at the site, and it opened in 1991. This cut is one of the most impressive rock exposures in the northeastern United States.
- Interstate 68 designation was originally applied to US 50 (the John Hanson Highway) from Interstate 95/Capital Beltway to Annapolis, Maryland. This section now carries the secret I-595 designation.
- The section through Cumberland, Maryland is one of the most substandard sections of Interstate highway, falling well below Interstate standards, however, there was no realistic alternate route so it was included in I-68. Built as U.S. Highway 40 in 1965, the tight character, narrow lanes and very limited sight distance warrant a 40 mph (60 km/h) speed limit and most exits are posted at 15 mph (25 km/h).
Reference
- 2005 Rand McNally "The Road Atlas 2005" - newest feature- interstate mileage by state
| Template:Ed divPrimary Interstate Highways | Missing image Interstate_blank.png Interstate Highway marker | ||||||
| 4 | 5 | 8 | 10 | 12 | 15 | 16 | 17 |
| 19 | 20 | 22 | 24 | 25 | 26 | 27 | 29 |
| 30 | 35 | 37 | 39 | 40 | 43 | 44 | 45 |
| 49 | 55 | 57 | 59 | 64 | 65 | 66 | 68 |
| 69 | 70 | 71 | 72 | 73 | 74 | 75 | 76 (W) |
| 76 (E) | 77 | 78 | 79 | 80 | 81 | 82 | 83 |
| 84 (W) | 84 (E) | 85 | 86 (W) | 86 (E) | 87 | 88 (W) | 88 (E) |
| 89 | 90 | 91 | 93 | 94 | 95 | 96 | 97 |
| 99 | 238 | H-1 | H-2 | H-3 | |||
| Unsigned Interstate Highways | |||||||
| A-1 | A-2 | A-3 | A-4 | PRI-1 | PRI-2 | PRI-3 | |
| Lists Two-digit Interstates - Three-digit Interstates Gaps in Interstates - Intrastate Interstates Interstate standards - Proposed Interstates | |||||||