Interstate 78

Missing image
Interstate78.png


Interstate 78 is an interstate highway in the eastern United States. It runs from Bordnersville, Pennsylvania in the west to New York City in the east.

Contents

Length

Mileskmstate
78 126 Pennsylvania
67.83 109.2 New Jersey
<1 1 New York
145 233 Total

Major Cities Along the Route

Intersections with other Interstates

Spur Routes

Notes

  • As a result of the incompletion of the full plan for I-78, none of its spurs actually intersect it. A 7.2 mile (11.6 km) gap exists in Union County, New Jersey between I-78 and I-278. I-478 is the route number for the Brooklyn-Battery Tunnel, which carries traffic to and from Lower Manhattan (it was supposed to continue from there past the Holland Tunnel as the long-abandoned Westway project). At 0.72 miles (1.2 km), I-878 is the shortest three-digit interstate in existence; it is unsigned, though there are signs for New York State Route 878. (I-375 in Michigan or I-395 in Maryland is the shortest signed three-digit interstate.)
  • These gaps were joined throughout much of the 1970s and '80s by the section between the Drift Road exit in Watchung, New Jersey and the NJ 24 junction in Springfield. The highway at that point crosses the Watchung Reservation, a popular Union County Park, and lawsuits halted construction for years while a suitable route could be found. Only short stubs existed past either exit, although the very high Plainfield Avenue overpasses were among them and their potential as a dangerous attractive nuisance was one factor in completing the highway.
  • Ultimately, in order to permit construction in the reservation, extra land was added to the Cataract Hollow Road overpass and a separate land bridge was built to allow for animal migration. The road was also designed to use a narrower right-of-way with no median strip and just a concrete barricade dividing the highway. It was completed and opened to traffic in the early 1990s.
  • I-278 goes through all of New York's five boroughs — crossing Manhattan only via the Triborough Bridge.
  • A short stretch of I-78 in New Jersey near the Pennsylvania border features an automatic deicing spray.
  • I-378 was a spur off the original alignment of I-78, which ran along US 22 north of Allentown and Bethlehem, Pennsylvania. However, a new I-78 was built south of the cities, and I-378 was downgraded to a similar-numbered state route.

Sources

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
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