Across 42 SCATS signal sites in Yarraville, Seddon, Spotswood and Kensington, local signal-site traffic fell from 69,328,947 movements in Nov-Dec 2025 to 64,691,209 in Jan-Feb 2026 — a change of -4,637,738, or -6.69%.
Over the same comparison period, West Gate Bridge TIRTL reference points recorded -162,295 truck movements and -469,718 total vehicle movements across the inbound and outbound bridge directions.
This is an early post-opening comparison, not a final causal study. Nov-Dec 2025 includes the tunnel opening month, while Jan-Feb 2026 captures the first full months after opening.
Seasonal effects, school holidays, driver adaptation, toll behaviour, truck-ban enforcement and road-network changes may also affect traffic volumes. The page should be read as an early measurable signal of post-opening change.
Circles are SCATS signal sites. They show local signal-site traffic change.
Blue diamonds are TIRTL bridge reference points. They show truck, vehicle, truck-share and speed changes on the West Gate Bridge corridor.
Red/orange circles mean local SCATS traffic fell. Yellow/green circles mean local SCATS traffic rose.
| Suburb | Sites | Nov-Dec 2025 | Jan-Feb 2026 | Change | Sites down/up |
|---|---|---|---|---|---|
| Kensington | 15 | 27,706,010 | 26,438,578 | -1,267,432 -4.57% |
13 down / 2 up |
| Seddon | 1 | 1,450,793 | 1,389,527 | -61,266 -4.22% |
1 down / 0 up |
| Spotswood | 7 | 14,605,385 | 13,788,610 | -816,775 -5.59% |
7 down / 0 up |
| Yarraville | 19 | 25,566,759 | 23,074,494 | -2,492,265 -9.75% |
17 down / 1 up |
| # | Site | Nov-Dec 2025 | Jan-Feb 2026 | Change |
|---|---|---|---|---|
| 1 | Francis / Wembley SCATS 4254 · Yarraville |
3,700,545 | 2,758,983 | -941,562 -25.44% |
| 2 | Smithfield / Gatehouse / Streetables SCATS 2502 · Kensington |
4,051,862 | 3,643,192 | -408,670 -10.09% |
| 3 | WILLIAMSTOWN near THOMAS SCATS 3487 · Yarraville |
2,858,580 | 2,482,554 | -376,026 -13.15% |
| 4 | Macaulay / Streetubbs SCATS 4484 · Kensington |
2,183,450 | 1,826,312 | -357,138 -16.36% |
| 5 | Princes Hwy West / Cemetery SCATS 2519 · Yarraville |
3,196,326 | 2,866,575 | -329,751 -10.32% |
| 6 | Westgate Freeway / Williamstown SCATS 2880 · Spotswood |
4,679,003 | 4,356,061 | -322,942 -6.90% |
| 7 | Racecourse / Smithfield SCATS 2500 · Kensington |
3,009,329 | 2,776,622 | -232,707 -7.73% |
| 8 | Whitehall / Somerville SCATS 3435 · Yarraville |
1,032,357 | 861,077 | -171,280 -16.59% |
| # | Site | Nov-Dec 2025 | Jan-Feb 2026 | Change |
|---|---|---|---|---|
| 1 | WHITEHALL near HALL SCATS 2517 · Yarraville |
318,658 | 215,626 | -103,032 -32.33% |
| 2 | Francis / Wembley SCATS 4254 · Yarraville |
3,700,545 | 2,758,983 | -941,562 -25.44% |
| 3 | FRANCIS / Stephen SCATS 4255 · Yarraville |
848,158 | 686,774 | -161,384 -19.03% |
| 4 | FRANCIS near BALLARAT SCATS 3432 · Yarraville |
900,556 | 730,851 | -169,705 -18.84% |
| 5 | Whitehall / Somerville SCATS 3435 · Yarraville |
1,032,357 | 861,077 | -171,280 -16.59% |
| 6 | Macaulay / Streetubbs SCATS 4484 · Kensington |
2,183,450 | 1,826,312 | -357,138 -16.36% |
| 7 | Francis / Whitehall SCATS 3438 · Spotswood |
682,081 | 578,081 | -104,000 -15.25% |
| 8 | WILLIAMSTOWN near THOMAS SCATS 3487 · Yarraville |
2,858,580 | 2,482,554 | -376,026 -13.15% |
| # | Site | Nov-Dec 2025 | Jan-Feb 2026 | Change |
|---|---|---|---|---|
| 1 | Williamstown / Somerville SCATS 4251 · Yarraville |
1,586,071 | 1,882,383 | +296,312 +18.68% |
| 2 | RACECOURSE near CROWN SCATS 4469 · Kensington |
4,639,925 | 4,769,443 | +129,518 +2.79% |
| 3 | KENSINGTON near DEVON SCATS 3436 · Kensington |
513,738 | 515,355 | +1,617 +0.31% |
| 4 | Hyde Street / Leek Street SCATS 8521 · Yarraville |
0 | 0 | +0 — |
| 5 | Kensington Road / Altona Street SCATS 3403 · Kensington |
552,426 | 549,557 | -2,869 -0.52% |
| Reference point | Trucks Nov-Dec 2025 | Trucks Jan-Feb 2026 | Truck change | Truck share | Vehicles | Speed |
|---|---|---|---|---|---|---|
| West Gate Bridge inbound E inbound E |
900,474 | 835,963 | -64,511 -7.16% |
+16.92% → +16.42% | 5,322,152 → 5,091,649 | +3.79 km/h |
| West Gate Bridge outbound W outbound W |
947,330 | 849,546 | -97,784 -10.32% |
+16.85% → +15.78% | 5,622,671 → 5,383,456 | +4.56 km/h |
SCATS data: 42 signal sites in Yarraville, Seddon, Spotswood and Kensington. TIRTL data: West Gate Bridge inbound and outbound corridor reference points. Comparison: Nov-Dec 2025 vs Jan-Feb 2026. Metric: vehicle movement change for SCATS; truck, vehicle, speed and truck-share change for TIRTL.
This page is designed to help residents, journalists and transport planners quickly identify where traffic patterns shifted and where follow-up investigation may be worthwhile.