WMUWellington Metro Upgradechainage tolerance ±10 mm
Running lines3 tracks · 7 switches · 4 branches
Kapiti LineHutt Valley LineDM · Down Main1.9 MGTUM · Up Main1.5 MGTLP1 · Box Hill Goods Loop0.2 MGT0.0 km1.9 km3.9 km5.8 km7.8 km9.7 km

Johnsonville Line

LP1 · Box Hill Goods Loop9.739 km · 0.2 MGT/yr on this running line · 96 services/weekday · run 2026-06-18
map data © OpenStreetMap contributors (ODbL) — tiles © CARTO
click the alignment to move the chainage cursor · 4.870 km
1Measured data
2Analysis overlay
3Work history
5Planned work
Chainage10 mm grid
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Wellington
Kaiwharawhara Junction
Crofton Downs
Awarua Street
Simla Crescent
Khandallah
Raroa
Johnsonville
Top 35 m SD
mm · 3 runs to 2026-06-18
Twist 3 m SD
mm · 3 runs to 2026-06-18
Alignment 35 m SD
mm · 3 runs to 2026-06-18
Gauge deviation
mm · 3 runs to 2026-06-18
RCF eddy current depth
mm · 3 runs to 2026-06-18
Rail head loss
mm · 3 runs to 2026-06-18
Rail side wear
mm · 3 runs to 2026-06-18
Ultrasonic crack — rail head
% head · 3 runs to 2026-06-18
Ultrasonic crack — rail foot
% foot · 3 runs to 2026-06-18
GPR ballast fouling index
% · 3 runs to 2026-06-18
Utilisation (MGT/yr)
MGT · 1 runs to 2026-06-18
OLE contact wire height
mm above TOR · 3 runs to 2026-06-18
OLE contact wire stagger
mm from centreline · 3 runs to 2026-06-18
OLE contact wire residual thickness
mm · 3 runs to 2026-06-18
OLE contact wire wear
% section loss · 3 runs to 2026-06-18
Structures
12 features
Switches & crossings
3 features
Level crossings
1 features
Geotechnical risk
2 features
Drainage assets
4 features
Ultrasonic defects
3 features
Overhead line equipment
5 features
Track geometry exceedance
1 flagged lengths
Fouling, drainage and geometry correlation
1 flagged lengths
Work history
11 records
Planned work
2 planned items
TAMP
TAMP
TAMP
TAMP
GRIND
GRIND ×2
SLEEP
RAIL
JVL-BLK-07
4.870 km

Scroll to zoom about the cursor · drag to pan · every band shares one 10 mm-aligned chainage axis