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| Route information | ||||
| Maintained byGDRT andMDPWRT | ||||
| Length | 133 km (83 mi) | |||
| Major junctions | ||||
| North end |   R25 /R50 nearBapsfontein | |||
| Major intersections |  N12 nearBenoni R29 inSprings N17 in Springs R42 inNigel R23 inBalfour | |||
| South end |   N3 /R54 north ofVilliers | |||
| Location | ||||
| Country | South Africa | |||
| Major cities | Bapsfontein,Springs,Nigel,Balfour | |||
| Highway system | ||||
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TheR51 is aprovincial route inSouth Africa that connectsBapsfontein with theN3 north ofVilliers, viaSprings,Nigel andBalfour.[1]
The R51 begins atBapsfontein,Ekurhuleni,Gauteng at the 4-way intersection with theR25 route and theR50 route (Delmas Road). As Pretoria Road, it heads south-south-west for 10 km up to Petit (east ofKempton Park and north-east ofBenoni), where it meets theM44 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.[1]
As Kingsway Road, it makes up the western border ofDaveyton, separating it from Benoni Farms, before crossing theN12 highway (Johannesburg-eMalahleni Highway). Just after the N12 crossing (by Kingsway), the R51 is joined by theR29 route fromBenoni Central and they areone road southwards for 5 km before splitting in the vicinity ofSprings (the R29 becomes 4th Avenue eastwards). By Wright Park, at the eastern terminus of theR554 route, the R51 turns eastwards to bypass the Springs town centre and by Springs Country Club, the R51 turns southwards.[1]
From Springs, the R51 crosses theN17 highway and makes a 20 km journey south toNigel. From Springs to Nigel, the R51 is followed by and is parallel to theM63 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 theR42 route and theR550 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 theBlesbokspruit, the R550 becomes its own road eastwards, leaving the R51 as Balfour Road southwards.[1]
From Nigel, the R51 makes a south-south-easterly 33 km journey, crossing intoMpumalanga Province and crossing theSuikerbosrand River, meeting theR548, toBalfour. 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.[1]
South of Balfour, the R51 meets the bypassingR23 road (Heidelberg-Standerton Road) at a roundabout. From Balfour, The R51 makes a southward 40 km journey, passingGrootvlei and itspower station, making a left turn, to end at a junction with theN3 freeway (In Mpumalanga, just north of theVaal River, which separates it from the town ofVilliers in theFree State Province on the other side). It meets the eastern end of theR54 route fromVereeniging at the same place.[1]
