Question: I-90 crosses the Continental Divide over what Pass in the Rocky Mountains of Montana?
Context: Homestake Pass is a mountain pass in the Rocky Mountains of Montana in the United States.  It sits on the Continental Divide on the border between Jefferson County and Silver Bow County, six miles south-southeast of Butte in Beaverhead-Deerlodge National Forest at an elevation of 6329 ft . Milner Pass, elevation 10759 ft is a mountain pass in the Rocky Mountains of northern Colorado in the United States.  It is located on the continental divide in the Front Range, within Rocky Mountain National Park, along the boundary between Larimer and Grand counties.  The pass provides the passage over the continental divide for US 34, also known as Trail Ridge Road between Estes Park and Grand Lake.  The pass is not, however, the high point on Trail Ridge Road, which crests at 12183 ft east of the pass within Rocky Mountain National Park.  Along with the rest of Trail Ridge Road, the pass is generally closed in winter from the first heavy snow fall (usually October) until the opening of the road around Memorial Day.  The gentle pass divides the headwaters of the Cache la Poudre River (which issues from Poudre Lake just east of the pass) and several creeks near the headwaters of the Colorado River to the west.  The road near the pass provides a panoramic view of the Never Summer Mountains to the west. South Pass (elevation 7,412 feet (2,259 m) and 7,550 feet (2,300 m)) is the collective term for two mountain passes on the Continental Divide, in the Rocky Mountains in southwestern Wyoming.  The passes are located in a broad low region, 35 miles (56 km) wide, between the Wind River Range to the north and the Oregon Buttes and Great Divide Basin to the south, in southwestern Fremont County, approximately 35 miles (56 km) SSW of Lander.  South Pass is the lowest point on the Continental Divide between the Central and Southern Rocky Mountains.  The passes furnish a natural crossing point of the Rockies.  The historic pass became the route for emigrants on the Oregon, California, and Mormon trails to the West during the 19th century.  It has been designated as a U.S. National Historic Landmark. Lemhi Pass is a high mountain pass in the Beaverhead Mountains, part of the Bitterroot Range in the Rocky Mountains and within Salmon-Challis National Forest.  The pass lies on the Montana-Idaho border on the continental divide, at an elevation of 7373 feet above sea level.  It is accessed via Lemhi Pass Road in Montana, and the Lewis and Clark Highway in Idaho, both dirt roads.  Warm Springs Road, which roughly follows the divide in Montana, passes just west of the pass's high point. The Never Summer Mountains are a mountain range in the Rocky Mountains in north central Colorado in the United States consisting of seventeen named peaks.  The range is located along the northwest border of Rocky Mountain National Park, forming the continental divide between the headwaters of the Colorado River in Rocky Mountain National Park to the local-east and the upper basin of the North Platte River (North Park) to the local-west; the continental divide makes a loop in these mountains.  The range is small and tall, covering only 25 sqmi with a north-south length of 10 mi while rising to over 12000 ft at over ten distinct peaks.  The range straddles the Jackson-Grand county line for most of its length, and stretches into Jackson and Larimer county at its northern end.  A panoramic view of the range is available from sections of Trail Ridge Road in Rocky Mountain National Park.  One of the northernmost peaks, Nokhu Crags, is prominently visible from the west side of Cameron Pass. Cadotte Pass, known in the mid to late 1800s as Cadotte's Pass, is a pass in the Rocky Mountains located on the Continental Divide in the U.S. state of Montana.  Pierre Cadotte, a white settler at Fort Benton, Montana, explored the pass in 1851.  Prior to his exploration Tribal people utilized the pass while migrating to the buffalo hunting plains around the Sun River.  Isaac Stevens, Territorial Governor of the Montana Territory, named the pass after Cadotte in 1853.  The pass is 6073 ft above sea level. Interstate 90 (I-90) is a transcontinental freeway, and the longest Interstate Highway in the United States at 3,020.54 mi .  Its western terminus is in Seattle, at State Route 519 near Safeco Field and CenturyLink Field, and its eastern terminus is in Boston, at Route 1A near Logan International Airport.  I-90 crosses the Continental Divide over Homestake Pass just east of Butte, Montana.  East of the Wisconsin-Illinois border, much of I-90 follows several toll roads, many of which predate the Interstate Highway system.  The Jane Addams Memorial Tollway, Chicago Skyway, Indiana Toll Road, Ohio Turnpike, New York State Thruway, Massachusetts Turnpike, and the Ted Williams Tunnel are all toll roads used by I-90 in the eastern half of the country.  The Interstate is not tolled through some segments in downtown Chicago; Greater Cleveland, and the rest of Northeast Ohio; Pennsylvania; and through brief sections near Buffalo and Albany.  Erie, Pennsylvania; Madison, Wisconsin; Billings, Montana; and Spokane, Washington are other major cities on I-90. Lewis and Clark Pass, el.  6424 ft is a mountain pass on the continental divide in Montana.  It lies at the head of the drainages of the west flowing Blackfoot River and the east flowing Dearborn River.  The pass is in the Helena National Forest in Lewis and Clark County.  The Continental Divide Trail traverses north and south through the pass.  At the time of the Lewis and Clark Expedition the pass was a much-used pathway where the native people living in what today is Montana crossed over the continental divide.  The pass was crossed by Meriwether Lewis on July 7, 1806, on the return leg of the Lewis and Clark Expedition with a party of nine men and his dog Seaman.  The pass was named for the expedition's two leaders–Lewis and William Clark.  Lewis and Clark Pass is the only roadless pass on the entire Lewis and Clark National Historic Trail.  It has gone from being one of the most used continental divide passes prior to the pioneer era to one of the least visited passes today.  It can be accessed by a 1.5 mi trail.  Visitors will encounter the pass much as Lewis did in 1806.  The furrows left by the countless dog and horse travois that crossed the pass are still visible (though fading) and this is one of the places along the expedition's route that visitors may still encounter a grizzly bear.  On a clear day, like Meriwether Lewis in 1806 one can see Square Butte in Cascade County, Montana, 40 mi to the northeast. Rollins Pass, elevation 11660 ft , is a mountain pass in the Rocky Mountains of north-central Colorado in the United States.  The pass is located on and traverses the continental divide at the crest of the Front Range southwest of Boulder, and is at the boundaries of Grand, Gilpin, and Boulder counties.  The pass provides a route over the Continental Divide between the Atlantic Ocean watershed of South Boulder Creek (in the basin of the South Platte River) with the Pacific Ocean watershed of the Fraser River, a tributary of the Colorado River. The Continental Divide National Scenic Trail (in short Continental Divide Trail (CDT)) is a United States National Scenic Trail running 3,100 miles between Mexico and Canada.  It follows the Continental Divide of the Americas along the Rocky Mountains and traverses five U.S. states — Montana, Idaho, Wyoming, Colorado, and New Mexico.  In Montana it crosses Triple Divide Pass (near Triple Divide Peak which separates the Hudson Bay, Atlantic Ocean and Pacific Ocean drainages.) The trail is a combination of dedicated trails and small roads and considered 70% complete.  Portions designated as uncompleted must be traveled by roadwalking on dirt or paved roads.  This trail can be continued north into Canada to Kakwa Lake north of Jasper National Park by the Great Divide Trail, which is so far described only in a few books and carries no official Canadian status.
Answer: Homestake Pass