Río Negro · San Matías pipeline · 443.5 km of route, and a window that closes in April 2028
The works are awarded, under way and backed by a published act of State; what is missing is licensed Río Negro supply on the other sidethesis
Aggregates, fill and earthmoving along the San Matías pipeline route
Estimated entry range for a supplier
~USD 1.8 M/yr, only during the window
Estimated market: USD 8.3-32.8 M/yr during the construction window from May 2026 to April 2028
up to date · reviewed Oct 5, 2026
At a glance
Who buysThe joint venture that won the laying contract
the 3 doors → WhenIt closes in April 2028, according to the term the proponent declared, and it does not shrink: it switches off. Excavation in Río Negro began in early October 2026, so the front is already moving. Every kilometre backfilled is demand that does not come back.
thesis · Oct 5, 2026 what to watch and where it stands → The main barrierBeing licensed before the front goes past, not getting licensed. No single piece is expensive, but every one of them takes months: the provincial register, the quarry and transport permits, the insurance and the safety program. The job ends in
April 2028.
thesis the whole entry map → Where you get inThe gap is not one of demand —the works are awarded and under way— nor of resource: Río Negro has the stone. It is one of scale, of licensing and above all of the clock:
the 4 routes → The San Matías pipeline crosses the Río Negro plateau for 443.5 kilometres —the other 29 are in Neuquén— with a 36-inch pipe buried 0.8 metres down and a 16-metre working right-of-way that widens to 30 where there is no access. That means moving between 2.3 and 4.2 million cubic metres of soil and buying between 230 and 690 thousand cubic metres of aggregate, because the environmental study itself declares that fill may have to be brought in. And it means one more thing, which comes before the number: the works run from May 2026 to April 2028. This niche does not shrink when they end — it switches off.
This is the only market in Río Negro with an expiry date, so the warning goes first: construction runs from May 2026 to April 2028 according to the schedule the proponent itself declared in its environmental impact study, and when it ends this market does not shrink — it switches off.See the clocks that are running, one by one
It is not sustained demand and must not be read as such. The second half of the warning is that the window is already open and there is something to measure it with: pipes have been arriving by ship at San Antonio Este since 21 August 2026, and in early October the haulage to the route and the first excavations in Río Negro began, according to the official report of 5 October. And there is a precedent in the same province that shows what happens to latecomers: the VMOS crude pipeline works —the route, by the Techint-SACDE joint venture; the terminal, by Milicic with CB&I— went to contractors from outside the province, and were 80 % complete in July 2026. The pipeline's is the one still on the table.
What the market is made of
The split of this niche is decided by the physics of transport, not by competition. The trench is dug by the contractor with its own fleet, already on the front. But stone does not travel: nobody hauls aggregate 600 kilometres when it sits 60 away. That asymmetry is the whole strategy.
How it splits, and against which totalSplit over the midpoint TAM of ~USD 18.5 M/yr, only during the construction window 2026-2028. The wedge captured by an already-registered Río Negro entrant —~USD 1.8 M/yr— is a share of the addressable market, not a third block: that is why it does not add on top. Own estimate. estim
CaptiveUSD 11.5 M · 62%
Addressable (SAM)USD 7 M · 38%
CaptiveUSD 11.5 M62%non-addressable
the trench, the laying and the backfill with in-situ material: part of the awarded joint venture's contract, which brings trenchers, crawler tractors and side booms and already has them on site
Addressable (SAM)USD 7 M38%addressable
what is bought on the ground because it does not travel far: aggregate, gravel and imported fill with their freight, the service track, the compressor site and the works yards, the concrete for the crossings and heavy-equipment hire with operator
Non-addressableThe trench, the laying and the backfill with in-situ material: they are part of the awarded laying joint venture's contract and are executed with its fleet, which is already on site. ~USD 11.5 M/yr, 62 % of the midpoint. estim
Addressable shareWhat is bought on the ground because it does not travel far: supply and haulage of aggregate, gravel and imported fill from quarry, grading and upkeep of the service track, earthmoving for the compressor site and the works yards, ready-mix concrete for the special crossings, and heavy-equipment hire with operator. ~USD 7.0 M/yr, 38 % of the midpoint. estim
Entry range for a supplierWhat an already-licensed Río Negro operator captures by stepping forward now: bulk freight, or a quarry that reorganises delivery to sustain a front that keeps advancing. ~USD 1.8 M/yr during the window, and it switches off with it. thesis
▸ The binding limit is the calendar rather than the number: the works end in April 2028 and the niche switches off with them, so any equipment bought has to amortise against two years or against another client. The second limit is the width of the band: no source publishes the bill of quantities, so the volume is calculated from design parameters and the result is a fourfold band, not a forecast.
Who really pays?
Three payers, and the order matters because the first is the one that least looks the part:
If you sellThe aggregate, the gravel, the imported fill and their freight to the front
→
It is the big buyer and the hardest to picture as a client, because it is usually seen as a competitor. On this line it is not: a pipe-laying company brings its own trencher fleet, but the stone it has to buy where the stone is, and it buys it on availability and delivery performance, not on the best price per cubic metre, because what costs it dearly is a front standing still thesis.
If you sellThe earthmoving and civil works for the compressor plant site
→
It is a different front from the route and with a different buyer: a 500-by-500-metre site verif to be cleared, levelled, compacted and given access roads, plus the foundations for the units. It starts after the laying and finishes after it, so it stretches the window by a few months for whoever enters through this door thesis.
If you sellGrading and upkeep of the route's service track
→
The environmental study says that «se acondicionará como calle de servicio la vía transitada por maquinaria y vehículos» —the track used by machinery and vehicles will be conditioned as a service road verif. That this road stays and has to be maintained to reach and inspect the pipe is our reading thesis: a small, perpetual demand, with no owner declared in the sources reviewed.
▸All three doors share a requirement that weighs more here than in any other niche we publish: you have to be licensed beforehand, not getting licensed. Registration in the provincial register, the quarry and transport licences and the main contractor's safety programme take months, and the works have already started. Whoever begins the process when they see the front pass their town arrived late.
Which projects move this demand
A ~472 km pipeline linking Tratayén (Neuquén) with San Antonio Oeste, on the San Matías Gulf (Río Negro), with capacity to carry ~27 MMm3/d of Vaca Muerta gas…
see the project →The largest project submitted to the RIGI: USD 51,000 million over the whole life of the project…
see the project →When the window opens
This is not «what breaks it»: it is the dashboard for getting in before it closes. And here the only thing worth watching is the clock, because this niche has no risk threatening it — it has a date:
What to watchWhat changes when it happensStatus
The laying front advances along the 443.5 km inside Río Negro
Every stretch backfilled and restored is aggregate already bought and earth already moved. Unlike the other niches in the province, this indicator does not say whether the market is growing: it says how much is left.
works declared from May 2026 to April 2028 in the environmental study
verif .
See the evidence
In early October 2026 the haulage of pipes to the route and the first excavations began, according to the official report of 5 October, with the third pipe carrier already at San Antonio Este, out of twelve planned shipments
verif . The official report does not give progress by kilometre.
The Allen compressor station site goes into construction
A different front, with a different buyer and a different calendar: a site the environmental study estimates at 500 by 500 metres, some 25 hectares
verif , to clear, level, compact and fit with access roads. It starts later than the laying and finishes later, so it
stretches the window by a few months for whoever comes in through this door
thesis.
the act approving the project estimates the start of operation at 1 May 2028.
See the evidence
the plant was awarded to OPS in April 2026, according to the press
prob Each new contracting stage of the project
The 60% Río Negro local-content share is not counted once a year: it is counted for each project unit —a works package, an operating stage or an individual investment unit— and the regulation requires every requirement to be published with a minimum of five business days to bid, forty-eight hours if urgent. ⇒ the door reopens at every stage, not only at the start.
Decreto 618/2026, provincial Boletín Oficial 6504 of 29 June 2026. The bid-invitation platform exists, but it is a login screen: it does not publish the calls to the outside
prob · Jun 29, 2026 ↗The service road's upkeep finds an owner
This is the only door that does not switch off in 2028: the works leave behind a passable 443.5 kilometre road that then has to be maintained so the pipeline can be inspected. Small, perpetual demand.
What signals the game has changed
The window closes in April 2028 and nothing of this niche is left afterwards
It is the only one in the Río Negro observatory that switches off rather than shrinks: once the route is backfilled and restored, demand for the pipeline's aggregate and earthmoving disappears.
See the evidence
Anyone investing in equipment has to amortise it against two years or against another client, and that other client has to be found from day one: provincial road works, the compressor site, and upkeep of the access tracks, which is perpetual even if small.
Construction has already started, so the window is shorter than the calendar says
The first pipe carrier unloaded at San Antonio Este on 21 August 2026, and in early October the haulage to the route and the first excavations in Río Negro began, according to the official report of 5 October.
See the evidence
the arrivals keep coming —twelve shipments in all— and the front advances with them. A supplier starting the licensing process now arrives with the front already several kilometres along. The practical consequence is harsh and worth stating: this niche rewards whoever is already licensed, not whoever gets licensed in order to enter.
The laying contractor brings its own earthmoving fleet
Contreras and SICIM are pipeline-laying contractors: trenchers, crawler tractors and side booms come with them. Aiming at the trench means competing against written-down equipment already on the front. What they do not bring is the stone, and that is the one door that does not close by itself.
No source publishes the bill of quantities, so the band is fourfold
The proponent's environmental impact study filed in Neuquén was opened in full —804 pages— and it gives not a single cubic metre.
See the evidence
The one for the Río Negro section, 544 pages, does not either: it says inputs «serán definidos cuando se avance en la ingeniería de detalle de la obra» and that the trench is backfilled «preferentemente» with the soil dug out of it, although outside fill may be needed. This niche's volume is calculated from verified design parameters, not read off a page. If backfill is mostly the excavated soil itself, as the Río Negro study prefers, purchases of outside aggregate sit closer to the floor of the band than to its ceiling. All that remains to be opened is the provincial file in four volumes; if the quantities are not there, they live in the contractor's detailed engineering.
See the remaining 2 risks
The local quarry may have the stone and not the pace
A linear project advancing kilometres a week does not buy like a fixed site: it demands sustained throughput to a moving front and penalises a shortfall with idle equipment. A supplier sized for municipal works that does not reorganise delivery and logistics loses the contract on non-performance, not on price.
The VMOS precedent says the default is to contract from outside
When the crude pipeline opened its front, the route went to the Techint-SACDE joint venture verif Techint press release and the terminal to a contractor with CB&I prob press.
See the evidence
that contractor is headquartered in Rosario
verif company website: contractors from outside the province.
Ley provincial 5.805 pushes the other way, but it only pushes: it does not compel buying from someone who cannot deliver. Local content works if there is licensed supply on the other side, and that is the work this niche asks to be done before 2028.
The opportunity in depth
How to get inthe gap and the routes that open it
1The precedent says the default is to contract from outside. When the VMOS crude pipeline opened its front, the route went to the Techint-SACDE joint venture verif and the terminal to a contractor with CB&I prob; that contractor is headquartered in Rosario verif. Ley provincial 5.805 pushes the other way, but it does not compel buying from someone who cannot deliver thesis.
2The local quarry may have the stone and not the pace. A linear project advancing kilometres a week demands sustained throughput to a front that keeps moving, with tippers and a weighbridge, and penalises a shortfall with idle equipment. It is a different business from selling aggregate to a fixed site.
3Licensing is the door and it takes time: registration in the provincial supplier register (Ley 5805), quarry and freight-transport licences, insurance and the main contractor's safety programme. None of it is hard; all of it takes months. ⚠️ And there is a condition that gets overlooked: the same law shuts out anyone holding due and unpaid debts with the Province, of whatever nature (article 3).
4And the clock is already running against you. The first pipe carrier unloaded on 21 August 2026 and in early October the excavations began in Río Negro. This niche rewards whoever is already licensed, not whoever gets licensed in order to enter.
What you needcapital, certification, tax regime and who pays
Route running through Río Negro443.5 km of the 472.5 of the works — the other 29 are in Neuquén
Width of the working right-of-way16 metres, widened to 30 where access is lacking
Soil moved2.3 to 4.2 million cubic metres
Aggregate and imported fill bought230 to 690 thousand cubic metres
When the window opens and when it closesMay 2026 to April 2028 — and it is already open
When you get paid, and what blocks it
High while the window is open, and for a reason of scheduling rather than price: on a linear project the cost of missing material is not the material, it is the front standing still. A laying crew with its fleet halted for want of gravel costs far more per day than the gravel does, so the main contractor pays for availability and delivery performance, not for the best price per cubic metre. ⚠️ And the flip side is just as hard: that same willingness switches off with the works. It is not a client you keep, it is a client that ends.
Who you compete againstwho is already there and what share they take
Who is
already in
Market
split
The joint venture that won the laying contractthe trench, the laying and the backfill, with its own fleet
They won the works package for some USD 530 M with a bid around 15 % cheaper than the other joint venture's prob.
See the evidence
A pipeline-laying company brings its own fleet of trenchers, crawler tractors and side booms: the route earthmoving is part of its contract and it does not subcontract the whole of it. What it does buy locally is what cannot be trucked in from Mendoza or from Italy: the aggregate, the gravel, the concrete and the bulk haulage. That is where the door is — not the trench.
A contractor from Rosario, which already built the other project's terminal with CB&Ithe works on VMOS's Punta Colorada terminal
This is the precedent that shows how this gets shared out in Río Negro and why the window matters thesis: when VMOS opened its front, the Punta Colorada terminal works —with their excavations and foundations— went to that contractor and CB&I prob. Today it has works along the corridor and the pipeline is the next front. It is not a distant competitor: it is the one closest to taking this work if nobody from the province steps forward.
The quarries and aggregate plants of Sierra Grande and San Antonio Oestethe aggregate and the gravel, if they have the scale
This is the link the province does have, and the one this niche puts to work. The limit is not geological: it is scale and pace. A linear project advancing kilometres a week demands sustained delivery to a front that keeps moving, with tippers and a weighbridge, and that is a different business from selling aggregate to a fixed site. Whoever solves delivery logistics captures the largest part of what is addressable.
The bulk hauliers of the Alto Valle and the Valle Mediothe freight of aggregate and imported fill
These are incumbents with a real advantage: they already have the fleet, already have the provincial licence and already bill in Río Negro, so they count as local content from day one. Their limit is that bulk construction freight is not the cargo they usually move and the front keeps shifting; whoever adapts the fleet first keeps two years of haulage.
The jobs it createsWhat remains after 2028 is not the aggregate: it is the service track. The works leave a trafficable route conditioned across 443.5 kilometres, crossing the Río Negro plateau end to end, and that route is then used by the pipeline's own operation, by the livestock producers of the southern line, and by anyone who has to reach a point where there was no road before.the detail on jobs and trades
It is public infrastructure in effect, built by a private project, and its upkeep is a small but perpetual demand that today has no declared owner. The second effect is the licence: a quarry or a fleet that registers in the provincial supplier register for this project stays registered afterwards, and that registration is what opens provincial public works and the fronts that follow.
How we
calculate it
The number is our own estimate. The calculation, step by step, is below.
The full calculation, step by step
Concentration Medium, with a clean division that sets the whole strategy: the earthmoving is concentrated in the laying contractor, which executes it with its own fleet; the supply of aggregate, gravel, concrete and freight is fragmented and local by physics —nobody hauls stone 600 km when it sits 60 km away—. That asymmetry is why a Río Negro entrant should not aim at the trench but at bulk supply: in the trench it competes against a written-down Italian fleet, in bulk supply it competes against distance, which is on its side.
The rule that moves it
In this niche the rule does not create the demand —the works are awarded and the soil has to be moved either way— but it is the only thing pushing for it to be bought in the province, and there is a precedent showing that without that push it gets bought outside:
See the underlying reading
The underlying policy that opens up this demand. It is the same inference declared by the rules and the program pillars pushing in this direction.
each phase buys something differentenablesRio Negro local content: 60% of contracting to local suppliers
See the rule → The law calls for 60% Río Negro local contracting, triple the RIGI's 20%, and in aggregate and bulk haulage it is where it is easiest to comply: the stone is here and so is the transport.See the full legal grounds
Three points change how it is used.
It has been in force since 1 September 2025, not since its June 2026 regulation — what arrived late was the machinery, not the obligation.
It does not bind only the project owner: it reaches its contractors and subcontractors, which is exactly who buys the gravel from a quarry. And
it covers services, not only goods and works, unlike the national RIGI's local-content rule. What the law does not solve on its own is worth saying:
local content works if there is licensed supply on the other side, and the oil pipeline precedent —the terminal was built by a contractor
prob headquartered in Rosario
verif with an international firm— shows what happens when there is not.
enables80/20 local hiring: 80% of personnel with 2 years' residency in Rio Negro
See the rule → It sets three minimums on the site workforce, and they are worth reading separately because they are not «80/20»: 80% Argentine nationality, 80% domiciled in Río Negro with two years of continuous residence, and 20% women and gender-diverse people.See the full legal grounds
In this niche they are among the easiest to meet: loader and grader operator, tipper driver and weighbridge operator are trades that exist in the province and do not have to be brought in. ⚠️ The exception worth knowing: the enforcement authority may waive the residence requirement for workers on hydrocarbon and energy projects inside the Cuenca Neuquina, by reasoned resolution.
enablesRIGI adhesion: first province, clean and unconditional
See the rule → Río Negro was the first province in the country to adhere, and the act that approved this USD 1,300 M pipeline hangs from that adhesion.See the full legal grounds
For an aggregate supplier the effect is not fiscal: it is that the project has a date. The pipeline's estimated start of operation is May 2028, and that date is what puts an edge on the window.
Where the number comes from
USD 8.3-32.8 M/yr during the window, midpoint ~USD 18.5 M. ⛔ And the binding limit is not the number but the date: in April 2028 this does not shrink, it switches off
See the calculation, the variables and how it was validated
Two blocks that add up and spread across the twenty-four months of works. Change one and the total is recalculated.
the 2.3-4.2 M m³ of soil moved along the Río Negro route × USD 6-12 per cubic metre ÷ 2 years of works + the 0.23-0.69 M m³ of aggregate and imported fill bought × USD 12-22 per cubic metre ÷ 2 years of works=USD 8.3-32.8 M/yr during the window, midpoint ~USD 18.5 M
Soil moved along the 443.5 km2.3 to 4.2 million m³annual review
Calculated from verified design parameters in the environmental study: a 1.86 m deep trench and right-of-way stripping 16 to 19.5 m wide. The mean trench width, the stripping thickness and the fraction of route widened to 30 m are own assumptions, because no source publishes them.
Aggregate and imported fill bought230 to 690 thousand m³annual review
The study declares that imported fill may be needed, but not how much. It is bounded by the sand bedding where the ground is rocky and by the gravel of the service track that the works themselves leave conditioned along the route.
Price per cubic metre movedUSD 6 a 12live data
OWN HAIRCUT. The band we triangulated by three independent routes on the Catamarca puna is USD 8 to 15; here the floor comes down because there is no altitude penalty, there are paved roads alongside, and the front is linear and continuous rather than an isolated pond at 4,000 metres.
Price per cubic metre bought and delivered to siteUSD 12 a 22live data
Dearer than moving your own soil because it includes quarry extraction, loading and haulage to a front that moves every day. It is the component where a Río Negro supplier has a real cost advantage, and it comes from distance.
How solid the number is estim
We looked for the bill of quantities and it does not exist. The proponent's environmental impact study was opened in full —804 pages, filed with the Neuquén environment authority— and it publishes not a single cubic metre of earthmoving: it describes the construction methodology in prose. We say so rather than hide it, because it decides the method: with no quantities, the volume is calculated from the design parameters, and those are published.The parameters it does publish, which are the base of the whole number:
| parameter | value | where |
|---|
| Length of the Río Negro section | 443.5 km | Table 3 of Chapter 3. The other 29 km are in Neuquén: together they make the 472.5 of the works |
| Pipe diameter | 36 inches | idem |
| Normal cover | 0.8 m | idem; rises to 1-2.5 m at crossings |
| Width of the working right-of-way | 16 m, widened to 30 m where access is lacking | Table 3 of Chapter 4 |
| Compressor plant site | 500 × 500 m | idem |
Coverage: the awards of the gas pipeline and of the VMOS oil pipeline, the proponent's two environmental impact studies (804 pages in Neuquén and 544 for the Río Negro section) and the only public figure from the Río Negro Suppliers Register: 476 companies registered and 308 enrolled as of 1 July 2026 · Oct 3, 2026 · not reviewed: the Suppliers Register's roll cannot be consulted —the official link its own regulation orders to be published returned an error— and there is no public list of licensed quarries either: there is no way to see who is licensed in each category
How to cite this figure: Despegue (2026). Aggregates, fill and earthmoving along the San Matías pipeline route · Río Negro. despegueargentina.com/en/rio-negro/aridos-movimiento-suelo-traza-san-matias · terms of use
Neighbouring markets3 markets in the same group, from USD 1,6 to USD 50 M a year
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Analysis and curation: Ignacio Aredez
Head of Despegue
Method and track record →- 20+ years in technology, 15 of them in data and AI, for clients across Europe and the Americas
- Certified in AI governance (ISO/IEC 42001)
- Machine Learning (Google Cloud)
- Registered expert with the European Commission
How to read the seals →
verif primary source · prob primary source pending · unconf a source said it · estim our own calculation · thesis our reading · the date belongs to the datum, at the precision its source allows
This is not financial advice. The TAM is an
estimate with a transparent method, not an official figure; the framing is labeled as thesis. Every figure carries its source.
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