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Topic: Partial cloverleaf interchange

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Parclo Interchange

Diamond interchange

Cloverleaf interchange

Slip road

T junction

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	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 ramps.
		These interchanges include the parclo and SPUI interchanges when connecting to an arterial road, and the stack interchange when connecting to another freeway or to a busy arterial where signals are still not desired.
		In Hampton, Virginia, a cloverleaf interchange between Interstate 64 and U.S. Route 258 is being partially unwound into a cloverstack interchange.
	en.wikipedia.org /wiki/Cloverleaf_interchange (909 words)

	Glossary
		Full cloverleaf is not considered as applicable in some situations now as it might have been a few decades ago.
		PARtial CLOverleaf A2 means two quadrants of the interchange have on and off ramps.
		PARtial CLOverleaf A4 means four quadrants of the interchange have on and off ramps.
	webfil_92.tripod.com /autoroutes_en/id53.html (1485 words)

	Interchange Bank (Site not responding. Last check: 2007-11-03)
		The cloverleaf was patented in the United States by Arthur Hale, a civil engineer in Maryland, on February 29, 1916.http://members.a1.net/wabweb/frames/kreuzf.htm Several cloverleaves were built in the late 1920s, and it is unclear which was first.
		With interchangeable parts, the problems that plagued the era of unique weapons and equipment had passed, and if one mechanism in a weapon failed, a new piece could be ordered and the weapon would not have to be discarded.
		In the United States, where this form of interchange is very common, particularly in rural areas, traffic on the off-ramp typically faces a stop sign at the minor road, while traffic turning onto the freeway is unrestricted.
	www.wwwtln.com /finance/102/interchange-bank.html (1125 words)

	Parclo (Partial Cloverleaf) interchanges (Site not responding. Last check: 2007-11-03)
		The term "parclo" is an abbreviation for "partial cloverleaf".
		For the freeway-road scenario, replacing the 270 degree cloverleaf loops with 180 degree loops or “on-off” ramps results in at-grade intersections with the road, rather than ramps that seamlessly merge with the road.
		A freeway parclo is essentially a cross between a full cloverleaf interchange and a stack interchange.
	www.donovanmartin.com /roads/parclo.html (417 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)

	New Jersey @ NorthEastRoads.com - Interstate 295 Northbound (Salem and Gloucester Counties) (Site not responding. Last check: 2007-11-03)
		The cloverleaf ramp descends onto the New Jersey Turnpike mainline ahead of its southbound merge with Interstate 295 south.
		A tight partial-cloverleaf interchange handles the movements of Interstate 295 with U.S. 322 at Exits 11A/B. 322 travels six miles to the Exit 2 interchange of the New Jersey Turnpike and nine miles to Mullica Hill and junction New Jersey 45 & 77.
		A partial "y" interchange composes the merge of U.S. 130 north onto Interstate 295 north.
	www.northeastroads.com /i-295a_nj.html (2637 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)

	Maryland @ AARoads.com - Maryland 10 (Site not responding. Last check: 2007-11-03)
		One half mile south of the six-ramp partial-cloverleaf interchange with Maryland 648 (Baltimore-Annapolis Boulevard) on Maryland 10 (Arundel Expressway) northbound.
		Maryland 10 northbound at the six-ramp partial-cloverleaf interchange with Maryland 710 (Ordnance Road).
		The westbound ramp to Interstate 695 merges with Exit 3A of the beltway inner loop ahead of the interchange with Maryland 2 (Ritchie Highway) northbound.
	www.aaroadtrips.com /md-010.html (973 words)

	OKRoads -- Interstate 26 South Carolina - Westbound - Interstate 20 to North Carolina State Line
		Following the six-ramp partial cloverleaf interchange are interchanges for Piney Grove Road (2 1/4 miles), Harbison Boulevard (3 1/2 miles), and Lake Murray Boulevard (4 1/2 miles).
		The next interchange is Exit 28, serving U.S. It is the first of eight to serve the city of Spartanburg.
		Construction was underway to replace a diamond interchange with a single-point urban interchange to coincide with a widening project along the state highway.
	www.okroads.com /guides/i26sc_wb3.html (2584 words)

	Maryland @ AARoads.com - Interstate 270 Northbound (Site not responding. Last check: 2007-11-03)
		It is not neccessary however to move onto the local lanes for the interchanges beyond Exit 5 as crossovers allow express motorists access to those off-ramps.
		A wide directional cloverleaf interchange composes the junction between Interstates 270 and 370 at Gaithersburg.
		Interstate 70 eastbound interchanges with Maryland 355 (Urbana Pike) in one half mile at south Frederick and Interstate 695 (Baltimore Beltway) in 38 miles.
	www.aaroadtrips.com /i-270a_md.html (2012 words)

	Georgia @ SouthEastRoads.com - Interstate 75 Northbound - Atlanta to Tennessee (Site not responding. Last check: 2007-11-03)
		The first interchange after the departure from the Interstate 85 overlap of Interstate 75 northbound is Exit 252A.
		A partial cloverleaf interchange composes the junction of the freeway with U.S. 41 (Northside Drive).
		The partial cloverleaf interchange serves the suburbs of Smyrna (pop.
	www.southeastroads.com /i-075e_ga.html (660 words)

	California @ WestCoastRoads - Interstate 80 Westbound - Sacramento County
		Interstate 80 westbound on the approach to the Exit 96 six-ramp partial-cloverleaf interchange with Madison Avenue.
		California 244, the shortest state maintained freeway in the state, ties into the interchange from Auburn Boulevard (Historic U.S. 40) to the southeast.
		Interstate 5 interchanges with Interstate 80 eight miles to the west.
	www.westcoastroads.com /california/i-080k_ca.html (2546 words)

	South Carolina @ SouthEastRoads.com - Interstate 526 (Site not responding. Last check: 2007-11-03)
		One mile west of the Interstate 26 junction is the Montague Avenue and International Boulevard (Exit 16) interchange complex of the Charleston bypass.
		The last North Charleston interchange of Interstate 526 is that of the Leeds Road junction (Exit 14).
		Grading and a short stub of pavement remains for the unconstructed segment of Interstate 526 at the Exit 10 interchange.
	www.southeastroads.com /i-526_sc.html (1600 words)

	Chapter 500 - question 15 (Site not responding. Last check: 2007-11-03)
		The partial cloverleaf interchange is suitable for large turning movements.
		Because of this feature, the Type L-9 interchange usually has the capacity to handle the volume of traffic which can be accommodated on the crossroads.
		Although the four-quadrant cloverleaf (Type L-10) has free-flow characteristics for all movements, the capacity of the interchange is limited by the short weaving section between the loop ramps.
	www.dot.ca.gov /hq/oppd/hdm_ojt/chp500/500a15b.htm (80 words)

	California @ WestCoastRoads - Interstate 80 Eastbound - Sacramento County (Site not responding. Last check: 2007-11-03)
		Portions of the freeway were built by that time however, and those include the wider shoulders to the west of Exit 92, the freeway viaduct from Winters Street east to the Longview Drive transit station, and two carriageways within the median of Interstate 80 between Longview Drive and Watt Avenue.
		Once it was decided not to construct the new alignment for Interstate 80 between the American River and Watt Avenue (Exit 94A), transportation officials revoked the Interstate mileage along the original freeway between U.S. 50 and Interstate 880 through east Sacramento.
		Exit 98 constitutes a six-ramp partial-cloverleaf interchange between Interstate 80 and Sacramento County E14.
	www.westcoastroads.com /california/i-080f_ca.html (2169 words)

	Pennsylvania @ NorthEastRoads.com - Interstate 95 Northbound (Delaware County) (Site not responding. Last check: 2007-11-03)
		A partial-cloverleaf interchange facilitates the movements between Interstate 95 and the north-south surface street.
		A tri-level interchange handles the movements of U.S. 322 and the Commodore Barry Bridge to/from Interstate 95.
		The next two interchanges of the freeway serve the Philadelphia International Airport area along the Delaware River at Lester.
	www.northeastroads.com /i-095a_pa.html (1894 words)

	Interchanges: Six-ramp (Site not responding. Last check: 2007-11-03)
		The six-ramp partial cloverleaf allows traffic on the side street to flow more smoothly than a plain diamond, since the only crossing traffic comes off the two exit ramps.
		In California, intersections that once had cloverleafs are being redesigned and rebuilt for six-ramps.
		The addition of yet another traffic light where there was none before is disappointing (and generates a fair amount of criticism from laypersons), but the six-ramp does not suffer from the weaving motions caused by a full cloverleaf.
	www.kurumi.com /roads/interchanges/sixramp.html (196 words)

	NJ 208 Freeway
		The existing 10.1-mile-long NJ 208 is among New Jersey's four-to-six lane divided highways that provide partial control of access, but still furnish driveway access to local business.
		The project featured the construction of new local and express lanes on both NJ 4 and NJ 208, the construction of a new bridge to carry the eastbound express lanes of NJ 4 over eastbound NJ 208, and the rehabilitation of the existing bridge carrying NJ 208 over Saddle River Road.
		This 2002 photo shows the rebuilt interchange between the NJ 208 Freeway and NJ 4 in Fair Lawn.
	www.nycroads.com /roads/NJ-208 (1252 words)

	Nevada @ RockyMountainRoads.com - U.S. Highway 395 & Interstate 580 Southbound (Reno Vicinity) (Site not responding. Last check: 2007-11-03)
		Exit 65A composes a split-diamond interchange between Interstate 580 & U.S. 395 and Villanova Drive and Plumb Lane.
		Southbound at the Exit 60 diamond interchange with South Meadows Parkway.
		A diamond interchange composes the junction between the two highways at Exit 59.
	www.rockymountainroads.com /us-395e_nv.html (1492 words)

	FHWA - MUTCD - 2003 Edition Revision 1 Figure 2E-30 Long Description
		The figure shows guide signs for a partial cloverleaf interchange of I-47 and SR 24.
		This sign is shown in the gore between the through lanes and the right-hand exit ramp to SR 24.
		It also is shown in the gore between the through lanes and the right-hand exit ramp from northbound I-47 to SR The fifth sign is shown on the cloverleaf exit ramp from northbound I-47 to SR 24 just prior to its intersection with SR 24.
	mutcd.fhwa.dot.gov /HTM/2003r1/part2/fig2e-30_longdesc.htm (1208 words)

	50 Corridor - US 50/Watt Avenue Interchange Reconstruction Project (Site not responding. Last check: 2007-11-03)
		This project was developed as a result of the work effort for the South Watt Area Transportation Study (SWATS) which provided a transportation master plan for the segment of Watt Avenue/South Watt Avenue between La Riviera Drive and Kiefer Blvd..
		It is likely that the interchange modification will include conversion to a L-9 partial cloverleaf interchange, similar to the recent modifications at the US 50/Sunrise Blvd. interchange.
		The partial cloverleaf interchange will realign the US 50 off-ramps to signalized intersections on Watt Avenue.
	www.50corridor.com /projects/project.asp?project=61 (178 words)

	Geometric Design Lab - Design Project
		There is a large building in the southeast quadrant prohibiting the use of that quadrant.
		Using a Grade-Separated, Two-Quadrant, Partial Cloverleaf A Interchange, you will design the exit ramp from the Freeway to Road 2000, the entrance ramp from Road 2000 to the Freeway, and the intersection of the ramps and Road 2000 in the southwest quadrant.
		The Freeway and Road 2000 intersect at Freeway Station 80+00.00 and Road 2000 Station 20+00.00.
	www.ce.utexas.edu /prof/rioux/ce367_200501/design_project.htm (2130 words)

	Geometric Design Lab - Lab Assignment 11 - Design Project Part 2
		Draw a 40 foot line tangent to the divisional island circle placed in Step E.3 that is a 15:1 taper from the Entrance/Exit Ramp centerline in the northwestern and southwestern direction and extend/shorten the western end of these lines with the edge of the divisional island.
		Partial delete the circle placed in Step E.3 at the tangent points of the lines drawn in Step E.4 to create a circular arc and extend/shorten the circular arc (you may want to use Modify Arc Angle) and the lines drawn in Step E.4 to the points of tangency.
		Partial Delete the right lane edge of the right eastbound lane of the Exit Ramp placed in Step E.2 at a location approximately in the center of the line and East of Point A in the cell placed in Step I.3.
	www.ce.utexas.edu /prof/rioux/ce367_200501/lab_assignment_11.htm (2049 words)

	Delaware 9A @ AARoads
		The state route travels Terminal Avenue east of Delaware 9 near the Wilmington city line to the Exit 2 partial cloverleaf interchange of Interstate 495.
		Along the two-lane roadway is the Exit 2 interchange of Interstate 495.
		An Interstate 495 trailblazer redirects Delaware 9A northbound drivers southward to the Terminal Avenue partial-cloverleaf interchange of the freeway (Exit 2).
	www.aaroads.com /delaware/de-009a.htm (1099 words)

	Major Projects on Route 880 (Site not responding. Last check: 2007-11-03)
		A partial cloverleaf interchange, with relatively restricted geometrics, exists at Coleman Avenue.
		In January 1994, I-880 (north of the proposed project) was widened from four lanes to six lanes from Montague Expressway Interchange (KP 10.6) in Santa Clara County to Route 262 (Mission Boulevard, KP 3.67) in Alameda County.
		Once these interchanges are rebuilt, I-880 will be widened from 6 to 8 lanes (four each direction) between Mission Blvd. and Highway 237 in order to extend the HOV (carpool) lane into Milpitas.
	www.dot.ca.gov /dist4/route880.htm (1580 words)

	Delaware 58 @ AARoads
		The interchange is still missing one element however, a direct ramp from Delaware 1 & 7 south to Interstate 95 south.
		Construction of the interchange between Delaware 1, 7, and 58 took place between 1996 and 1999.
		Between 1996 and 1999 the congested intersection between Delaware 58 (Churchmans Road) and Delaware 7 (Stanton Christiana Road) was upgraded to a partial-cloverleaf interchange.
	www.aaroads.com /delaware/de-058.htm (2019 words)

	US 202/PA 611 Multiplex - Central PA/MD Roads
		US 202 meets this former US route (PA 611 was once US 611) at a partial cloverleaf interchange.
		The other end of the duplex is at a half-open, half-closed cloverleaf interchange.
		US 202 follows a freeway to the north, and a stub end was left for a future extension to the south.
	www.m-plex.com /roads/pamplex/mp_us202_pa611.html (255 words)

	Mosholu Parkway
		Within the confines of Van Cortlandt Park, the Mosholu Parkway becomes a limited-access parkway, with interchanges at the Major Deegan Expressway (I-87) and the Henry Hudson-Saw Mill River Parkway.
		And the location of a giant cloverleaf planned in the center to provide an interconnection with another parkway - the Mosholu - was near the only fresh-water marsh of any size left in all New York.
		And, the aide went on, they needn't worry that the job would only be half done; the Commissioner was always thorough: the marsh was going to be landscaped not only near the cloverleaf but also along its entire length.
	www.nycroads.com /roads/mosholu (582 words)

	Alternate US 220/PA 144 Multiplex - Central PA/MD Roads
		Here three duplexes meet at a partial-cloverleaf interchange.
		For historical photography of this duplex, see the Old US 220/PA 144 duplex page.
		Two miles to the north, PA 144 exits and PA 150 takes over at the partial-cloverleaf interchange.
	www.m-plex.com /roads/pamplex/mp_altus220_pa144.html (317 words)

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