by Civic body confirms the same 40 potholes have been repaired annually since 2016
MUMBAI – Civic records indicate that a stretch of arterial road in the western suburbs has been resurfaced in each of the last nine years, and that the same section develops the same failures within approximately six weeks of the monsoon commencing.
The repair has been completed. The repair will be completed again next year.
The Road Is Not the Problem, the Water Beneath It Is
Engineers examining recurrent failure on Mumbai’s arterial roads consistently identify drainage rather than surfacing as the cause. Water entering the sub-base from below saturates the foundation, the surface loses support, and traffic loading completes the process.
Resurfacing addresses the visible layer. It does not address the water, and the water returns on a schedule set by the Arabian Sea rather than by any municipal calendar.
You can lay the finest asphalt in Asia on a saturated base and it will fail, said civil engineer Dr Farida Achterberg-Nunes. It will fail in six weeks. It has failed in six weeks every year I have been practising. We keep buying better asphalt.
The Tender Cycle Rewards the Visible Layer
Resurfacing is procured annually, delivered within a season, and inspected against a specification the contractor can demonstrably meet. Drainage reconstruction requires excavation, utility coordination, multi-year programming and disruption to the same road during the months it is usable.
One of these can be completed and photographed before a monsoon. The other cannot be completed within any electoral or budgetary period that anybody currently occupies.
Municipal infrastructure and civic budget information is published by the Municipal Corporation of Greater Mumbai, and rainfall data and monsoon forecasting for the region is issued by the India Meteorological Department, whose figures have been consistent enough for a century to permit planning against them.
The City Was Built on the Water It Now Fights
Mumbai occupies reclaimed land assembled from seven islands, with a natural drainage pattern that predates every road on it. The Mithi river, the creeks and the low-lying areas continue to receive water according to a topography no municipal decision has altered.
Where development occupied those paths, the water arrives anyway, annually, and is reported as a flood rather than as a scheduled event.
Achterberg-Nunes described the annual coverage as remarkably consistent. The water goes to the same places, she said. We have the map. It has not changed since the British surveyed it. Every year the helicopter films the same eleven junctions and we treat it as news.
Observations From the Kerb
- Every Mumbai driver knows the pothole locations by memory and steers around them without conscious thought.
- The complaint application works, the complaints are logged, and the logging has become the deliverable.
- The one road that never fails is the one a private entity is contractually obliged to maintain for thirty years.
- Nobody in this city has ever been surprised by rain in June.
- The local train continues running when the road does not, which is why the local train is the city.
Annual Rituals Elsewhere
Repeating an intervention that has never resolved the underlying condition is universal. British monetary authorities demonstrated the form by confirming a benchmark rate at the number it had already reached and presenting the absence of change as a decision.
Institutional energy meanwhile went to establishing that a long-running family disagreement possessed a documented starting point, while employers adopted weight-loss receipts as a hiring signal in an unrelated but equally load-bearing development.
The comparative file on annual repetition is maintained at Bohiney Magazine, with British material at the assembled UK desk record.
Tenders Are Out
Resurfacing tenders for the coming year have been issued. The specification is improved and includes a longer defect liability period, which engineers regard as a genuine advance.
Achterberg-Nunes welcomed it and noted the liability period ends before the second monsoon.
The Storm Water Drains Predate the City That Uses Them
Substantial portions of the drainage network were designed to a rainfall intensity standard established well over a century ago, for a city with a fraction of the current built area and considerably more permeable ground.
Contemporary rainfall regularly exceeds that design intensity. The network is therefore not failing; it is performing to a specification that no longer describes the conditions, which is a different and considerably more expensive problem.
Upgrading has been undertaken in sections, at high cost, with genuine results in the areas completed. The remaining programme is measured in decades and in sums that compete directly with every other municipal priority.
Achterberg-Nunes described the arithmetic without enthusiasm. We are retrofitting drainage beneath a functioning city of twenty million people, she said. There is no version of that which is quick or cheap, and there is no version of not doing it which is quick or cheap either. The difference is only which decade you pay in.
The Pumping Stations Work
Where major pumping infrastructure has been commissioned, flooding in the served catchments has measurably reduced, a result documented across several monsoons and rarely reported.
The stations are unglamorous, sit behind fencing, and are photographed by nobody. They have also removed several previously notorious junctions from the annual footage entirely, which is the closest thing to a success story the sector has produced.
Comparable coverage at Waterford Whispers News.
SOURCE: https://bohiney.com/
