State Route 141 in Missouri
State Route 141 is a state route in the US state of Missouri. The road forms a north-south route through the western suburbs of St. Louis and alternates between intersections with traffic lights and grade-separated connections. The road is 34 kilometers long.
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State Route 141 forms a western bypass through the expensive suburbs of St. Louis. The road is everywhere a divided highway with 2 to 4 lanes in each direction. Several connections are grade separated, with freeway characteristics, but it is not a through highway. State Route 141 continues west of Interstate 270 and intersects most of St. Louis’ radial roads. The road begins south of town on US 67 and ends northwest of town on State Route 370.
State Route 141 has been an important local road since the suburban development of this area. The road has been congested since the 1990s and improvements have therefore been made. The section between State Route 30 and I-64, the middle section, was widened to 2×3 lanes in 2003. In 2012, a project was completed to create several grade-separated intersections on the portion between I-64 and State Route 364.
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State Route 152 in Missouri
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State Route 152 or SR-152 is a state route in the U.S. state of Missouri. The road is largely a highway and forms an east-west connection to the north of the city of Kansas City. The route is 29 kilometers long.
State Route 152 in Kansas City.
The highway begins south of the city’s airport, on Interstate 435 ‘s beltway. The highway then has 2×2 lanes and in fact forms the northern boundary of the built-up area of the Kansas City metropolitan area. After a few miles you cross Interstate 29, the highway from Kansas City to St. Joseph and Omaha. Shortly afterwards, north of the Gladstone enclave, you cross US 169, the northern highway of Kansas City. Not long after, the freeway portion ends again at Interstate 435. The road then continues as a 2×2 main road until the suburb of Liberty.
Around 1990, construction of the highway on three sections was started, but by 1996 only a few parts of it had been completed, partly still single-lane. The cloverleaf with I-29 and US 169 were built in the early 1990s, the cloverleaf with the east side of I-435 is older. In the second half of the 1990s, the eastern section between US 169 and I-435 was completed, around 2003-2004 the middle section between I-29 and US 169 was converted into a freeway. Finally, the western section between I-435 and I-29 was converted to a freeway in 2005-2006.
In 2012, 13,000 to 16,000 vehicles traveled daily between I-435 and I-29, 47,000 to 48,000 vehicles to US 169, and 41,000 vehicles continued on to I-435.
State Route 21 in Missouri
State Route 21 is a state route in the U.S. state of Missouri. The road forms a north-south route through the east of the state, from the Arkansas border into the metropolitan area of St. Louis. South of St. Louis, the road is a freeway for 20 miles. The total route is 303 kilometers long.
State Route 21 begins at the Arkansas border, from which Arkansas State Route 115 continues to Pocahontas and Walnut Ridge. State Route 21 traverses the east of the Ozark Mountains and is a somewhat secondary route, with few sites of interest. Most north-south traffic prefers US 67 further east and Interstate 55 further east. The landscape is largely densely wooded and hilly. In Jefferson County, just outside the St. Louis metropolitan area, State Route 21 is a freewaywith 2×2 lanes from Hillsboro to the St. Louis County border at Arnold. The last section in the urban area of St. Louis is a moderately important city road with traffic lights. It crosses the Interstate 270 ring road, after which State Route 21 ends at State Route 30 in the suburb of Affton.
State Route 21 has traditionally not been a major thoroughfare, but the section south of St. Louis was used quite intensively by recreational traffic. Therefore, the road in Jefferson County has gradually been converted to a freeway. The first section of this is the northernmost section between Antonia and the St. Louis County border, which opened way back in the ’80s or early ’90s. Around 2000 this was extended a few kilometers south. The Hillsboro Bypass opened in 2006. The most recent part opened on December 15, 2008 north of Hillsboro.
It is planned to extend the freeway some 10 kilometers further south to De Soto, but funding has not yet been found.
600 vehicles drive daily on the Arkansas border, increasing slightly to 1,000 to 1,500 vehicles north of Doniphan. The part through the Ozarks usually has 1,500 to 2,500 vehicles per day. This rises to 12,500 vehicles between De Soto and Hillsboro and 14,000 vehicles on the freeway toward St. Louis. The busiest point is just before the SR-141 with 27,000 vehicles per day. There were about 18,000 vehicles in the urban area of St. Louis.