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| Route information | ||||
| Maintained by GDRT and MDPWRT | ||||
| Length | 133 km (83 mi) | |||
| Major junctions | ||||
| North end |   R25 / R50 near Bapsfontein | |||
 N12 near Benoni  R29 in Springs  N17 in Springs R42 in Nigel  R23 in Balfour | ||||
| South end |   N3 / R54 north of Villiers | |||
| Location | ||||
| Country | South Africa | |||
| Major cities | Bapsfontein, Springs, Nigel, Balfour | |||
| Highway system | ||||
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The R51 is a provincial route in South Africa that connects Bapsfontein with the N3 north of Villiers, via Springs, Nigel and Balfour. [1]
The Route begins at Bapsfontein, Ekurhuleni, Gauteng at the 4-way intersection with the R25 route and the R50 route (Delmas Road). As Pretoria Road, it heads south-south-west for 10 km up to Petit (east of Kempton Park and north-east of Benoni), where it meets the M44 metropolitan route and continues by way of a left turn to become Geldenhuys Street southwards. After 4 km, the R51 continues by way of a right turn at Aloe Road to become Kingsway Road, bypassing Benoni Farms.
As Kingsway Road, it makes up the western border of Daveyton, separating it from Benoni Farms, before crossing the N12 highway (Johannesburg-eMalahleni Highway). Just after the N12 Crossing (by Kingsway), the R51 is joined by the R29 route from Benoni Central and they are one road southwards for 5 km before splitting in the vicinity of Springs (the R29 becomes 4th Avenue eastwards). By Wright Park, at the eastern terminus of the R554 route, the R51 turns eastwards and by Springs Country Club, the R51 turns southwards.
From Springs, the R51 crosses the N17 highway and makes a 20 km journey south to Nigel. From Springs to Nigel, the R51 is followed by and is parallel to the M63 metropolitan route. In Nigel, at the main 4-way junction before the Glenverloch Suburb, the R51 joins the road going east and is cosigned with the R42 route and the R550 route for 2 kilometres, making up the northern border of the Nigel CBD. At the Balfour Road Junction, the R51 and the R550 split from the R42 road to become the road heading south-east. After the Laversburg suburb, just after crossing the Blesbokspruit, the R550 becomes its own road eastwards, leaving Balfour Road with the R51 designation.
From Nigel, the R51 makes a south-south-easterly 33 km journey, crossing into Mpumalanga Province, meeting the R548, to Balfour. It enters Balfour southwards as Joubert Street, before turning east, then south at Dyer Street to cross the Balfour Railway southwards. After the Railway crossing, it makes a right turn at Johnny Mokoena Drive and then a left turn to become Joubert Street again.
South of Balfour, the R51 meets the bypassing R23 road (Heidelberg-Standerton Road) at a roundabout. From Balfour, The R51 makes a southward 40 km journey, passing Grootvlei and its power station, making a left turn, to end at the N3 Johannesburg-Durban Highway (In Mpumalanga, just north of the Vaal River, which separates it from the town of Villiers in the Free State Province on the other side). It meets the eastern end of the R54 route from Vereeniging at the same place.
The N3 is a national route in South Africa that connects Johannesburg and Durban, respectively South Africa's largest and third-largest cities. Johannesburg is the financial and commercial heartland of South Africa, while Durban is South Africa's key port and one of the busiest ports in the Southern Hemisphere and is also a holiday destination. Durban is the port through which Johannesburg imports and exports most of its goods. As a result, the N3 is a very busy highway and has a high volume of traffic.
The R21 is a major north–south provincial route in eastern Gauteng Province, South Africa. Built in the early 1970s, it remains one of two freeways linking Pretoria with Johannesburg, via the R24. As the eastern of the two freeways, it links the Pretoria city centre with OR Tambo International Airport and Boksburg. Between the Solomon Mahlangu Drive on-ramp in Monument Park, Pretoria, and the N12 interchange in Boksburg, the R21 is an 8 lane highway and motorway (freeway), with 4 lanes in each direction. It has off-ramps leading to Irene, Olifantsfontein, Benoni, and Kempton Park. The route intersects the N1 highway near Centurion, the R24 near the airport, the N12 and N17 in Boksburg, and the N3 near Vosloorus on the East Rand, where it ends. The section from the N12 to the N3 is not a freeway. The R21 is also designated as the P157.
The R23 is a provincial route in South Africa that links Benoni with Volksrust via Brakpan, Heidelberg and Standerton.
The R25 is a provincial route in South Africa that connects Johannesburg with Groblersdal via Kempton Park, Bapsfontein and Bronkhorstspruit.
The R29 is a provincial route in South Africa that connects Johannesburg with Leandra and Kinross via Germiston, Boksburg, Benoni and Springs. For much of its route it is named Main Reef Road. The R29 used to end near the Golela border post, however the section from Evander to Ermelo is now part of the N17 and the section from Ermelo to the Golela border post just after Pongola is now part of the N2.
The R42 is a provincial route in South Africa that connects Vanderbijlpark with Bronkhorstspruit via Vereeniging, Heidelberg, Nigel and Delmas.
The R50 is a provincial route in South Africa that connects Pretoria with Standerton via Delmas and Leandra.
The R54 is a provincial route in South Africa that connects Potchefstroom with Villiers via Vereeniging.
The R82 is a provincial route in South Africa that connects Johannesburg with Kroonstad via Vereeniging and Sasolburg. It starts just south of the M1 Johannesburg Municipal Highway's interchange with the N12 Southern Bypass, going south, meeting the R59, R54, R42 & R28 routes at Vereeniging before crossing the Vaal River into the Free State & proceeding to Kroonstad. It is an alternative, but longer route to the N1 National Route between Johannesburg & Kroonstad.
The N12 is a national route in South Africa which runs from George through Beaufort West, Kimberley, Klerksdorp and Johannesburg to eMalahleni.
The N17 is a national route in South Africa which runs from Johannesburg to Oshoek (Ngwenya) on the border with Eswatini. It passes through Springs, Bethal and Ermelo.
The R548 is a Regional Route in South Africa that connects Delmas with Balfour via Devon.
The R550 is a Regional Route in Gauteng, South Africa that connects Johannesburg South with Devon via Katlehong and Nigel.
The R555 is a Regional Route in South Africa that connects Springs with Ohrigstad via Delmas, Ogies, Witbank, Middelburg, Stoffberg and Burgersfort.
The M37 is a metropolitan route in Greater Johannesburg, South Africa. It connects the N3 at Greenstone Shopping Mall with Katlehong via Edenvale and Germiston.
The M45 is a long metropolitan route in Greater Johannesburg, South Africa. It connects Kempton Park with Dunnottar via Benoni, Brakpan, KwaThema and Tsakane. The entire route is in the City of Ekurhuleni Metropolitan Municipality.
The M46 is a short metropolitan route in Greater Johannesburg, South Africa. It connects Tulisa Park in Johannesburg South with Springs via Germiston, Boksburg and Brakpan.
The M53 is a short metropolitan route in Greater Johannesburg, South Africa. It connects Germiston with Vosloorus via Elsburg.
The M56 is a short metropolitan route in Greater Johannesburg, South Africa. It connects Boksburg with the northern part of Springs via Brakpan.
The M63 is a short metropolitan route in Greater Johannesburg, South Africa. It is an alternative route to the R51 road between Springs and Nigel.
