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Topic: Cloverleaf interchange

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Partial cloverleaf interchange

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	Parclo interchange - Wikipedia, the free encyclopedia
		The parclo interchange (short for partial cloverleaf interchange) is a successor to the cloverleaf interchange.
		The parclo interchange was developed by the Ontario Ministry of Transportation [1] as a replacement for the cloverleaf on 400-Series Highways, removing the dangerous weaving patterns and allowing for more acceleration and deceleration space on the freeway.
		In addition, the Solomon Pond Road interchange on I-290 in Northborough, Massachusetts was converted from a B2 interchange to a B4 interchange in the mid-1990s with the construction of the Solomon Pond Mall.
	en.wikipedia.org /wiki/Parclo_interchange (949 words)

	The Cloverleaf
		Cloverleaf interchanges were comparatively cheap - the only other free-flow intersection with less bridges involved is a large traffic circle, which, (luckily) early engineers realized, would be a huge disaster if placed at the intersection of two high-speed freeways.
		The interchange to the left is at the intersection of CA 170 and Victory Boulevard in the northeastern suburbs of Los Angeles.
		The next interchange to the north, at CA 170 and Sherman Way, is similar to this one; the northbound (eastern) half has the braided loop ramps, but the southbound (western) half of the interchange has only two ramps, creating a half-diamond with a stoplight at the intersection with Sherman Way.
	whereroadsmeet.8k.com /article/clover.htm (1592 words)

	Cloverleaf (Site not responding. Last check: 2007-10-12)
		This is a cloverleaf interchange with Granger Road (Ohio 17).
		Because cloverleaf interchanges were novelties when this one was built, the "cloverleaf" name was applied quite a bit in the immediate area, eventually including...
		Cloverleaf II While not as old as the 21-17 Cloverleaf to the west, this cloverleaf between Warrensville Center Rd and Oh 43 (Miles Rd) is a relic in comparison to modern interchanges.
	www.roadfan.com /clover.html (1236 words)

	Dream Interchanges
		"H" Interchange: This interchange is so called because it resembles the letter "H." In the illustration, two "T" interchanges are used to connect the freeway to the surface street, hence the nickname.
		Cloverleaf crossover: Two freeways cross over themselves, so that the travel lanes are reversed when they pass through the interchange.
		Four cloverleaf ramps are placed in the middle of the interchange.
	www.geocities.com /henryewatson/dreaminterchanges.html (822 words)

	Office of Roadway Engineering Services
		The diamond interchange is the most common type where a major facility intersects a minor highway.
		Cloverleaf or partial cloverleaf designs may be used in lieu of a diamond when development or other physical conditions prohibit construction in a quadrant, or where heavy left turns are involved.
		The full cloverleaf weaving maneuver is not objectionable when the left-turning movements are relatively light, but when the sum of traffic volumes on two adjoining loops approaches about 1,000 vehicles per hour, interference occurs, which results in a reduction in the speed of the mainline traffic.
	www.dot.state.oh.us /roadwayengineering/studies/interchange_info.asp (620 words)

	Cloverleaf interchange - Wikipedia, the free encyclopedia
		A cloverleaf interchange is a two-level interchange in which left turns (in countries that drive on the right) are handled by loop roads (US: ramps, UK slip roads).
		The cloverleaf was patented in the United States by Arthur Hale, a civil engineer in Maryland, on February 29, 1916.
		The cloverleaf was patented in Switzerland on October 15, 1928.
	en.wikipedia.org /wiki/Cloverleaf_interchange (933 words)

	FHWA - MUTCD - 2003 Edition Revision 1 Chapter 2E
		Interchange numbers may be shown to the left of the interchange name or route number.
		Interchanges with more than one exit from the main line shall be numbered as described in Section 2E.28 with an appropriate suffix.
		The typical diamond interchange ramp departs from the mainline roadway such that a speed reduction generally is not necessary in order for a driver to reasonably safely negotiate an exit maneuver from the mainline onto the ramp roadway.
	mutcd.fhwa.dot.gov /HTM/2003r1/part2/part2e3.htm (3025 words)

	Interchanges: Cloverleaf
		As we'll see, the full cloverleaf is not considered as applicable in some situations now as it might have been a few decades ago; in several places cloverleafs have been replaced with either signalized interchanges or higher-capacity directional interchanges with flyovers.
		A disadvantage to the plain cloverleaf is the "weaving" process, where drivers exiting one loop have to merge and cross other drivers entering the next one.
		The first cloverleaf opened in New Jersey (at routes 4 and 25, which are now US 1/9 and NJ 35) in 1929; it is scheduled to be replaced with a diamond interchange around 2004.
	www.kurumi.com /roads/interchanges/cloverleaf.html (563 words)

	I-95 and DE 141, Wilmington, DE
		Interchange Description: This interchange is a variation on the venerable cloverleaf interchange.
		Instead of I-295 traffic weaving across all of the southbound lanes of I-95 to the cloverleaf ramp to DE 141 southbound, drivers could exit here to DE 141 north, use the northeasterly cloverleaf to enter the right side of I-95 southbound, and then use the northwesterly cloverleaf to exit to DE 141 southbound.
		Advantages: This interchange, had it not been nuilt as it is, probably would have been a standard cloverleaf interchange.
	www.whereroadsmeet.8k.com /Interchange/de-i95-s141.htm (943 words)

	Glossary (Site not responding. Last check: 2007-10-12)
		Cloverleaf : Typically a cloverleaf is used where a freeway intersects a busy surface street.
		Full cloverleaf is not considered as applicable in some situations now as it might have been a few decades ago.
		This type of interchange is used mainly for new highways that have enough ROW and where capacity warrants.
	webfil_92.tripod.com /autoroutes_en/id53.html (1485 words)

	Virginia @ AARoads.com - Interstate 295
		The first mainline interchange of the north Richmond bypass and Interstate 295 southbound is that of the Exit 51B/A cloverleaf at Nuckols Road.
		The upcoming cloverleaf interchange facilitates the movements between the freeway and Virginia State Secondary 627 (Meadowbridge Road).
		A new interchange is planned on Virginia 895 with a southern extension of Airport Drive for Richmond International Airport.
	www.aaroadtrips.com /i-295_va.html (2211 words)

	Study Area
		This interchange is currently a flopped interchange with all of its ramps on the southeast side of SR 67.
		In the southwest quadrant of the interchange are airport de-icing basins (photos 7 and 8).
		North of the interchange is Lynn Creek an intermittent stream (photos 26 and 27).
	www.in.gov /dot/div/specialprojects/wsc/study.htm (706 words)

	history (Site not responding. Last check: 2007-10-12)
		Cloverleaf was born in the summer of 1975 behind my parents house in Havertown.
		At that time we had not come up with the Cloverleaf name but were known as Lima Parts and Service.
		I was located on what is reportedly the first "cloverleaf" interchange in United States.
	www.cloverleaf-auto.com /history.htm (408 words)

	washingtonpost.com: Interchange Opens on Rte. 28
		The interchanges are part of a $200 million project to replace six of the 10 traffic lights that cause bottlenecks between Interstate 66 and Route 7.
		Five of the eight new interchange loops opened Saturday: northbound 28 to eastbound 606, southbound 28 to eastbound and westbound 606, and eastbound 606 to northbound and southbound 28.
		The interchanges are being built under the Public-Private Transportation Act of 1995, which allows private construction companies to propose ways to design and build a transportation project if they can find the funds.
	www.washingtonpost.com /ac2/wp-dyn/A29730-2004Oct13?language=printer (403 words)

	Proposed Indianapolis Interstate Interchange Improvement Projects
		This interchange is interconnected with the Shadeland Ave.
		This interchange is basically being downgraded to a partial cloverleaf, with one dual-lane flyover ramp from I-465N to I-74W and a traffic signal on the west side of I-465.
		This interchange interfaces with a newly expanded interstate heading west to the new airport terminal and has a new braided ramp structure between it and SR 67 to reduce weaving traffic.
	www.urbanophile.com /arenn/trans/ichange.html (2983 words)

	I-494 AND I-35W INTERCHANGE RECONSTRUCTION
		The capacity at this interchange is insufficient for today's travel demands for this stretch of I-494 far exceed the capacity of its three lanes.
		Freeway capacity and interchanges along the corridor were designed in the 1950's to handle a fraction of the current traffic volumes.
		While addressing the interchange area eliminates a large part of the bottleneck in the I-494 reconstruction area, two other projects are required to complete the corridor: I-494 from HIghway 100 to Xerxes (2004 estimated construction costs including right-of-way, $180 million) and I-494 from Nicollet to 34th Avenue (2004 estimated construction costs including right-of-way, $188 million).
	www.dot.state.mn.us /metro/projects/i494/I494_I35W_DataSheet.html (2164 words)

	Tennessee @ SouthEastRoads.com - Interstate 140
		The Interstate 140 begin overhead is placed at the Dutchtown Road partial cloverleaf interchange to the north of Interstate 40 & 75.
		Ahead is the three-quarter cloverleaf interchange of Exits 1A/B (U.S. The east-west orientated U.S. 11 & 70 (Kingston Pike) travel between Cedar Springs and the town of Farragut (pop.
		Paralleling the roadway to the north is Sherill Boulevard.
	www.southeastroads.com /i-140_tn.html (949 words)

	Tennessee @ SouthEastRoads.com - Interstate 275
		Interstate 275 northbound at the Exit 1B cloverleaf ramp to Baxter Avenue westbound.
		A short distance to the north of the Exit 1A/B cloverleaf interchange is the Exit 1C/D cloverleaf.
		Interstate 275 kinks to the east between Murphy Avenue and the Norfolk-Southern Railroad corridor to the north of the Exit 1D/C interchange.
	www.southeastroads.com /i-275_tn.html (966 words)

	Nevada @ RockyMountainRoads.com - Summerlin Parkway
		The ramps for the Anasazi Drive diamond interchange act as the Summerlin Parkway mainline at present.
		A reconstruction project was underway involving the interchange between Summerlin Parkway and U.S. 95 (Oran K. Gragson Expressway).
		Note the xeriscape (drought-resistant landscape in the desert) used for the land around this interchange for the purpose of water conservation and to demonstrate the stark beauty of the desert in an urban area.
	www.rockymountainroads.com /summerlin_pkwy.html (1010 words)

	Virginia @ AARoads.com - Interstate 495 (Capital Beltway) Inner Loop
		The second interchange of Interstate 95 within the state of Virginia is that of Exit 176.
		The substandard nature of the ramp is one of the main reasonings for the upgrading of the current directional cloverleaf interchange into a multi-level stack affair.
		Interstate 495 intersects Virginia 7 (Leesburg Pike) at the Exit 47A/B cloverleaf interchange.
	www.aaroadtrips.com /i-495a_va.html (1840 words)

	NCRoads.com: I-85 and I-785
		SPUIs (Single-Point Urban Interchange) with N.C. (exit 34) and N.C. 16 (exit 36).
		Interesting 2-level interchange with I-77 (exit 38), which is discussed there.
		Cloverleaf with U.S. 29/601 (exit 58) in Concord/Kannapolis area.
	members.cox.net /ncroads/interst/ih085.html (1730 words)

	Interchanges: the Stack (Site not responding. Last check: 2007-10-12)
		If the ramps are two lanes wide, the interchange has quite high capacity and drivers with good tires probably won't even have to slow down.
		The higher elevation of the topmost ramps requires a longer approach compared to other interchanges, which can sometimes conflict with nearby interchanges on the freeway: there might be no room to fit a stack between adjacent interchanges.
		For example, plans for the CA 17/CA 85 interchange in Los Gatos, Calif., were modified from a multilevel structure to a low-profile cloverleaf variant to appease the neighbors.
	www.kurumi.com /roads/interchanges/stack.html (393 words)

	Feedback on Proposed New I-65/County Line Rd. Interchange
		I believe this is the interchange of the 1970’s, and represents a step backwards in interchange design, not progress.
		In other words, in order to reconstruct the interchange into a full cloverleaf, the ramps that are currently proposed for construction will need to be ripped out and replaced.
		Initially, a diamond interchange is proposed, but it will be constructed on alignments that allow the remaining collector/distributor roads, loop ramps, and an airport interchange to be constructed.
	www.urbanophile.com /~arenn/letters/dot08.html (1351 words)

	The San Antonio Area Freeway System - Northwest Interchange Construction
		TxDOT is in the midst of a six-year, $134 million project to replace the outdated and overburdened two-level modified cloverleaf interchange with a four-level directional (or "stack") interchange.
		When completed in mid 2007, the new interchange will have the capacity to handle 600,000 vehicles per day and dramatically improve traffic on both Loop 410 and I-10 in the northwestern part of the city.
		The interchange project will also remove the left-hand exits and entrances, add additional main lanes on Loop 410 and I-10, and provide continuous access roads on both freeways through the interchange.
	home.att.net /~texhwyman/nwint.htm (651 words)

	Why the Springfield interchange is special (Site not responding. Last check: 2007-10-12)
		The Springfield interchange is different from most interchanges because three major roads come together at one point.
		When there are two major roads a new kind of interchange needs to be used.
		When there are two major roads and too much traffic for a cloverleaf interchange to handle a directional interchange is used.
	filebox.vt.edu /a/achristo/special.htm (218 words)

	Huntington Expressway (RI 10 and US 6)
		The "Friendly interchange" (which was named for nearby Friendly Road) replaced plans for a conventional cloverleaf interchange with a new proposal for a hybrid cloverleaf-flyover interchange.
		In 1972, the northern terminus of the expressway was moved north of the Harris Avenue ramps to a modified trumpet interchange at Dean Street.
		It was to have an interchange with the RI 37 Expressway near the intersection of RI 117 and Airport Road in Warwick.
	www.bostonroads.com /roads/RI-10 (1329 words)

	I-194 Ends \| Michigan Highway Ends
		The southern terminus of I-194 is at a cloverleaf interchange with I-94 (Exit 98) in the southern part of Battle Creek.
		Because this is a cloverleaf interchange, traffic looking to head north on I-194 / M-66 will need to use the second ramp.
		As is the case with the first guide sign advertising the I-194 / M-66 interchange on east I-94, the one in the westbound direction should omit the directional reference.
	www.state-ends.com /michigan/i194 (683 words)

	Interchange of the Week-#65
		The interchange north of the bridge, on Wellesley Island, is a type of folded diamond interchange with CR 100 and CR 191 (similar to
		The interchange: Exit 52, the northernmost interchange on I-81, is a diamond interchange with the north end of CR 191, just south of the United States Customs plaza.
		Grading is visible which shows the interchange to have once been a six-ramp partial cloverleaf, since reconfigured to reduce merging traffic at the southbound toll plaza.
	www.empirestateroads.com /week/week65.html (590 words)

	Northern Expressway (I-93)
		Handling more than 350,000 vehicles per day (AADT), the 1950's-style cloverleaf interchange is a chokepoint for New Hampshire-bound traffic and suffers from a high accident rate.
		To address wider issues in the area of the interchange, the MHD initiated a new planning study in 2004 that involves the "I-93 / I-95 Interchange Task Force," which is made up of Federal and state agencies, state and local officials, community members and other interested organizations.
		While there are no current plans to rebuild the interchange, the final recommendations of the planning study, which will be released in February 2006, may include reconstruction alternatives.
	www.bostonroads.com /roads/northern (2511 words)

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