US 34

U.S. Route 34
Route information
Length:	1,122 mi (1,806 km)
Existed:	1926 – present
Major junctions
West end:	US 40 at Granby, CO
	I‑25 / US 87 near Loveland, CO US 85 in Greeley, CO I‑80 / I‑180 / US 77 at Lincoln, NE I‑29 near Glenwood, IA I‑35 near Osceola, IA I‑74 near Galesburg, IL I‑39 / US 51 near Mendota, IL I‑294 at Western Springs, IL
East end:	IL 43 at Berwyn, IL
Location
States:	Colorado, Nebraska, Iowa, Illinois
Highway system
United States Numbered Highway System List Special Divided Replaced

U.S. Route 34 is an east–west United States highway that runs for 1,122 miles (1,806 km) from north-central Colorado to the western suburbs of Chicago. Through Rocky Mountain National Park it is known as the Trail Ridge Road where it reaches elevation 12,183 feet (3,713 m), making it the highest paved through highway in the United States. The highway's western terminus is Granby, Colorado at U.S. Route 40. Its eastern terminus is in Berwyn, Illinois at Illinois Route 43 and Historic US 66.

U.S. Route 34 becomes a toll road for a short distance in Colorado, where it passes through Rocky Mountain National Park.

In the state of Colorado, U.S. Route 34 runs north from Granby through Rocky Mountain National Park. It passes through Estes Park, Loveland, and Greeley before entering Nebraska east of Wray.

Within Rocky Mountain National Park US 34 is known as Trail Ridge Road. Due to its high elevation through the park and over the Continental Divide, Route 34 closes entirely in winter from the Colorado River Trailhead on the west (10 miles north of the Grand Lake entrance) to Many Parks Curve on the east (8 miles from the Estes Park entrance.) Closure runs roughly from mid-October to Memorial Day weekend in May, and can occur at any time in summer due to high alpine snow storms.

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Wikipedia