Vermont Route 18

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Vermont Route 18

VT 18 highlighted in red
Route information
Maintained by VTrans
Length7.887 mi[1] (12.693 km)
Major junctions
South end NH 18 at Littleton, NH
Major intersections I-93 in St. Johnsbury
North end US 2 in St. Johnsbury
CountryUnited States
Highway system
VT 17 VT 19
Route 17N.E. Route 20

Vermont Route 18 (VT 18) is a 7.887-mile-long (12.693 km) state highway in Caledonia County, Vermont, United States. It runs from the New Hampshire state line, continuing there as New Hampshire Route 18 northward to U.S. Route 2 (US 2) in the town of St. Johnsbury. The route parallels and connects to Interstate 93 (I-93) and is a former routing of the Theodore Roosevelt International Highway.

Route description

Vermont Route 18 begins at the New Hampshire state line between Littleton and Waterford. After crossing the Connecticut River into Vermont, VT 18 veers westward to cross under I-93 into Lower Waterford village. VT 18 then continues northwest running closely parallel to I-93 on its west side for roughly 7 miles (11 km) until Stiles Pond. Just north of the pond, I-93 changes direction from northwest to southwest. VT 18 crosses under I-93 at this point with an interchange at Exit 1, where US 2 Truck joins VT 18 for a short concurrency. Soon after junction with I-93, which is the only numbered exit on that route in Vermont, VT 18 and US 2 Truck end at U.S. Route 2 about 0.25 miles (0.40 km) past the St. Johnsbury town line. US 2 continues into the town center. VT 18 is part of the Connecticut River Byway.[3]


Vermont Route 18 was originally part of the Theodore Roosevelt International Highway, a transcontinental auto trail organized in 1919 running from Portland, Oregon to Portland, Maine via Ontario.[4] Several years later, in 1922, the New England states adopted the New England road marking system, assigning route numbers to the main through routes in the region.[2] The Roosevelt Highway routing in Vermont was assigned Route 14 from Burlington to Montpelier, and Route 18 from Montpelier to the New Hampshire state line in Waterford.[5] The original Vermont portion of Route 18 ran 40 miles (64 km) from Montpelier to St. Johnsbury using modern U.S. Route 2, then modern Vermont Route 18 from St. Johnsbury to the New Hampshire line.[6]

In late 1926, the U.S. Highway system was established. U.S. Route 2 in Vermont was designated on New England Route 14 (Burlington to Montpelier), New England Route 25 (Montpelier to Wells River) and New England Route 15 (St. Johnsbury to Lunenburg), connected by a brief overlap with U.S. Route 5.[7][8] In 1935, the portion of U.S. Route 2 between Montpelier and St. Johnsbury was relocated to use the alignment of Vermont Route 18. The previous alignment from Montpelier to Wells River was designated as part of newly established U.S. Route 302, and the overlap with U.S. Route 5 was eliminated.[9] This truncated the northern/western end of Vermont Route 18 to St. Johnsbury.[9]

Major intersections

The entire route is in Caledonia County. [1]

NH 18 south
Continuation into New Hampshire
I-93 – Littleton NH, St. JohnsburyExit 7 (I-93); diamond interchange
St. Johnsbury7.88712.693 US 2 – St. Johnsbury, ConcordNorthern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


  1. ^ a b c Traffic Research Unit (May 2013). "2012 (Route Log) AADTs for State Highways" (PDF). Policy, Planning and Intermodal Development Division, Vermont Agency of Transportation. Retrieved March 11, 2015.
  2. ^ a b Motor Sign Uniformity, New York Times, April 16, 1922
  3. ^ Google (June 8, 2009). "overview map of VT 18" (Map). Google Maps. Google. Retrieved June 8, 2009.
  4. ^ Max J. Skidmore, Moose Crossing: Portland to Portland on the Theodore Roosevelt International Highway, Hamilton Books, 2006, ISBN 0-7618-3510-5
  5. ^ Official Automobile Blue Book, Vol. 1, 1926 edition, (Automobile Blue Books Inc., Chicago, 1926). Map indicated the routing of the Theodore Roosevelt International Highway by "T" markers along the route.
  6. ^ Automobile Legal Association Green Book, 1925 edition, (Scarborough Motor Guide Co., Boston, 1925). A route log of the New England Inter-state routes is included in the book showing rough mileage.
  7. ^ United States Numbered Highways, American Highways (AASHO), April 1927
  8. ^ Official Automobile Blue Book, Vol. 1, 1927 edition, (Automobile Blue Books Inc., Chicago, 1927)
  9. ^ a b Automobile Legal Association Green Book, 1938/39 edition, (Scarborough Motor Guide Co., Boston, 1938)

External links