Interstate 25 or I -25 is an Interstate Highway in the U.S. state of Colorado. The highway is the primary north-south link in the state, connecting all major Colorado cities east of the Rocky Mountains. I-25 runs close to the base of the Rocky Mountains and they are continuously visible westward. I-25 runs from the New Mexico border south of Trinidad to the Wyoming border north of Carr. The largest city on the route is the state capital Denver, in addition I-25 runs through Colorado Springs and Pueblo. The route is 485 kilometers long.
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The I-25 between Trinidad and Walsenburg.
I-25 crosses the Colorado border from the state of New Mexico at 2,388-foot Raton Pass. You pass through a beautiful valley, with beautiful views of the surrounding mountains. The first town you pass is Trinidad, from where US 350 leads to La Junta in the northeast and US 160 to Kansas in the east. Leaving the Rocky Mountains, the highway straddles the dividing line between the High Plains to the east and the Rocky Mountains to the west. One passes through desolate stretches of land, with many long straights. The second town you pass through is Walsenburg. Here you can take the US 160 towards Alamosa in the west. To the east, SH 10, where you will not encounter a single hamlet or place for 100 kilometers. The area through which one passes is virtually unpopulated and looks like a steppe outside the rainy seasons.
The first major city on the route is Pueblo, which has approximately 100,000 inhabitants. Here one crosses US 50, which runs from Cañon City in the west to La Junta in the east. There are no more than 2×2 lanes in Pueblo. After this you come through steppe again and west of the road is Fort Carson, a military site. The second major city one passes through is Colorado Springs, a city of nearly half a million residents. The first suburb is Fountain. Colorado Springs is a large city in area and it quickly takes 35 miles to drive through. The I-25 is the city’s only highway. In Colorado Springs, US 24 crosses from Leadville in the Rocky Mountains to Limon on Interstate 70expires. Traffic to Kansas should take the US 24 here rather than the detour via Denver. Only quite far into the city does the highway widen, with 3 to 4 lanes in each direction. The last suburb is Monument. North of Colorado Springs, I-25 continuously has 2×3 lanes all the way to the Denver area.
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The I-25 at Centennial.
One now enters the Denver metropolitan area, which extends for 60 kilometers along I-25. The first suburb is Highlands Ranch. Here the road immediately widens to 2×4 lanes. One crosses the E-470 ring road via a 4-level stack. There is a large mall next to the highway. After the junction there are 2×5 lanes, a little further on even 2×6 lanes. There is a large and modern office park along I-25, which has excellent access. At the north end of this business park, Interstate 225 exits, which leads through the huge suburb of Aurora to Interstate 70.expires. Parallel to I-25 is a light rail. From here are 2×4 lanes. Further north, 2×5 lanes are available again. One passes west of downtown Denver, which is quite large and has many skyscrapers. Right next to the highway is Invesco Field, a large stadium. The Denver skyline is visible from the highway. Just past the center is a large shunting yard along the highway.
A turbine interchange crosses Interstate 70, Colorado’s main east-west route. After this junction, a second large shunting yard is located to the west of the highway. This area is a huge business park, which extends over 10 kilometers. At Twin Lakes, Interstate 76 crosses from Denver to the state of Nebraska. Immediately after this one crosses Interstate 270, a short connecting road to I-70 and US 36which leads to the town of Boulder in the northwest. This is followed by a suburban area on the north side of the conurbation, with major suburbs such as Arvada, Westminster and Thornton. These suburbs each have more than 100,000 inhabitants. Further north, the road narrows to 2×3 lanes. In the north, a four-level stack junction crosses the E-470 again.
After Denver one starts the last part of Colorado, to the border with Wyoming. This route is approximately 120 kilometers long. There are still a number of towns in this area, which make it fairly densely populated, although little of them can be seen from the highway. To the west are the towns of Boulder and Longmont. These cities are only accessible via the secondary road network. Further north are the larger towns of Greeley, Loveland and Fort Collins, the latter being the largest. The desolate area near Carr crosses the border into Wyoming, where Interstate 25 continues in Wyoming to Cheyenne, Casper and finally Buffalo.