M31 (Johannesburg)

Metropolitan route M31
Route information
	Maintained by Johannesburg Roads Agency and Department of Roads and Transport (Gauteng)
Length	13.6 mi (21.9 km)
Major junctions
South end	R554 / R103 Heidelberg Road, Raceview
	N12 Southern Bypass, Alberton; M38 South Rand Road, Tulisa Park; N17 Southern Bypass, Elandsfontein; M33 Houer Road, City Deep; M2 Heidelberg Interchange, City and Suburban; R29 Anderson Street/Marshall Street, Johannesburg; R24 Commissioner Street/Albertina Sisulu Road, Johannesburg; M11 Louis Botha Avenue, Berea; M1 Houghton Drive, Upper Houghton; M1 1st Avenue, Houghton Estate; M16 Riviera Road, Houghton Estate; R25 11th Avenue, Houghton Estate; M1 M20 Glenhove Road, Oaklands; M1 Atholl Oaklands, Abbotsford;
North end	M30 Corlett Drive, Bramley
Highway system

The M31 is a metropolitan route in Johannesburg, South Africa. The road connects the southern suburbs of Alberton with Johannesburg's northern suburbs. The routes eastern bypass in the Johnannesburg CBD connects the M2 motorway at the Heidelberg Interchange with M1 North motorway in Houghton and then the route follows the M1 motorway northwards until the M31 ends in Bramley.

Route

The M31 begins as Ring Road West in Raceview, Alberton, at a junction with the R554/R103 Heidelberg Road.[1]^:154 The Ring Road West heads northwards through the Alberton CBD before leaving it and joining the Ring Road East.[1]^:132 There, the M31 continues north as Voortrekker Road, where it interchanges and crosses the N12 freeway (Johannesburg Southern Bypass).[1]^:132

It changes its name to Heidelberg Road and meets the M38 South Rand Road/Rand Airport Road in Tulisa Park. Continuing northwards, at Elandspark, it interchanges and crosses the N17 freeway (eastbound only) where it continues north-west through City Deep.[1]^:131 Passing the Joburg Market, it crosses the M19 Marjorie Road and Vickers Street.[1]^:109 Continuing north-west over a railway line and past the Kaserne railway depot, it reaches the Heidelberg Interchange on the east-west M2 motorway at the southern end of the Johannesburg CBD.[1]^:108

The M31 passes under the M2 and becomes two one-way streets (Joe Slovo Drive northwards and Sivewright Road southwards) and rises to become a overpass in the City & Suburban/Marshalltown area, heading north on the eastern side of the Johannesburg CBD, first crossing over the R29 (Marshall Street and Anderson Street), then crossing over Commissioner Street and Albertina Sisulu Road (R24).[1]^:108 Here it turns north-east into Doornfontein, where the overpass ends and the route returns to street level.[1]^:108 As it reaches the outskirts of the University of Johannesburg (Doornfontein campus) it rises to an overpass crossing Charlton Terrace and enters Berea and Yeoville (where it stops being a one-way street), continuing north to meet Louis Botha Avenue (M11).[1]^:108

It crosses under Louis Botha Avenue in Upper Houghton, immediately forming a short hairpin bend to the west and reaches Houghton Drive.[1]^:82 At Houghton Drive the route turns north on this road passing through The Wilds Municipal Nature Reserve to an intersection.[1]^:82 The road north accesses the M1 motorway but the M31 turning east as Houghton Drive and then immediately turns north as West Street where it reaches 1st Avenue in Houghton Estate.[1]^:82 This 1st Avenue gives access to the M1 south motorway. Crossing 1st Avenue, the M31 continues north to where the Riviera Road (M16) intersects it from the west and that road gives access to the M1 north.[1]^:82 Continuing north, the M31 reaches 11th Avenue (R25) and that road gives access to the M1 south.[1]^:82 Crossing 11th Avenue it continues north until it reaches Glenhove Road (M31) in Oaklands.[1]^:56 Here the route turns east as Pretoria Street and then immediately turns north-east as Atholl Oaklands Road.[1]^:56 At its M1 intersection in Abbotsford, Atholl Oaklands Road heads north across the motorway while the M31 splits, continuing north-east as Scott Street through Waverley until it ends it path at an intersection with Corlett Drive (M30) in Bramley.[1]^:56

References

Street Guide Witwatersrand (11 ed.). MapStudio. 2001. ISBN 1-86809-537-1.

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[Map-1] Street Guide Witwatersrand (11 ed.). MapStudio. 2001. ISBN 1-86809-537-1.