Under construction
2012 Metro Tunnel (Melbourne Metro 1)
(Network Development Plan - Stage 2)
2018 Melbourne Airport
(Network Development Plan - Stage 3)
2018 Suburban Rail Loop
(Network Development Plan - Stage 6)

Plans
Elmore to Mitiamo
Cape Patterson and Kilcunda Junction
1857 Elsternwick to St Kilda
1882 Albert Park - Elwood line
1884 Shelbourne to Llanelly
1884 St Kilda to Rosstown Railway
(Sea Beach extension)
1884 St Kilda to Rosstown Railway
(inland Melbourne extension)
c1889 Ballan - Werribee line
c1889 Craigieburn - Laverton line
via Sydenham & Deer Park
c1889 Healesville to Narbethong (BG)
c1889 Healesville to Narbethong (NG)
1890 Barwon Heads line
1890 Doncaster
1890's Flemington Bridge branch
1890 Portarlington line
1900 Orbost to Bendock line
1900 Orbost to Bombala line (via Bondi)
1900 Orbost to Deleget River line
1900 Orbost to Eden line (via Timbillica)
1915 Anakie line
1915 Geelong - Guildford line
via Daylesford & Ballan
1915 Geelong - Kyneton / Macedon line
via Bacchus Marsh
1923 Elmore to Heathcote
1928 Benalla to Mahaikah BG
1928 Doncaster
1928 Mansfield to Tolmie
1928 Tatong to Tolmie
1928 Wangaratta to Moyhu BG conversion and on to Mahaikah
1928 Whitfield to Mahaikah NG extension
1940 Alamein extension to East Malvern
(1940 Ashworth Improvement Plan)
1940 St Kilda extension to Elwood
(1940 Ashworth Improvement Plan)
1946 Genoa to Mallacoota
1950's Hurstbridge extension to East Reservoir
1950's Laverton - Tottenham line
1954 Beaumaris line
(1954 Melbourne & Metropolitan Board of Works)
1954 East Preston line
(1954 Melbourne & Metropolitan Board of Works)
1954 Fishermen's Bend line
(1954 Melbourne & Metropolitan Board of Works)
1954 Mornington line
via Mount Eliza
(1954 Melbourne & Metropolitan Board of Works)
1954 Southbank to Spencer Street
(1954 Melbourne & Metropolitan Board of Works)
1965 Melbourne Airport
1969 Coldstream electrification
(1969 Melbourne Transportation Plan)
1969 Dandenong - Frankston extension
(1969 Melbourne Transportation Plan)
1969 Doncaster
(1969 Melbourne Transportation Plan)
1969 Hastings electrification
(1969 Melbourne Transportation Plan)
1969 Mornington electrification
(1969 Melbourne Transportation Plan)
1969 Rockbank electrification
(1969 Melbourne Transportation Plan)
1969 Rowville
(1969 Melbourne Transportation Plan)
1991 Doncaster
2008 Albion - Jacana line for passengers
2013 Avalon Airport
2013 Doncaster
(Network Development Plan - Stage 3)
2018 Glen Waverley extension to Knox City
2018 Melbourne Metro 3
2018 Monash line
2018 Baxter electrification
(Network Development Plan - Stage 3)
2018 Melton electrification
(Network Development Plan - Stage 3)
2018 Wyndham Vale electrification
(Network Development Plan - Stage 3)
2018 Clyde extension
(Network Development Plan - Stage 4)
2018 Wallan electrification via Upfield
(Network Development Plan - Stage 4)
2018 Wyndham Vale and Werribee extension
(Network Development Plan - Stage 4)
2018 Melbourne Metro 2
(Network Development Plan - Stage 4/5)
2018 Geelong electrification
(Network Development Plan - Stage 5)
2018 Wollert branch
(Network Development Plan - Stage 5)
2018 Rowville
(Network Development Plan - Stage 6)