Construction · Lima, PE · 14 km urban expressway · Public works concession · civil + electromechanical construction
CUMBRA
Línea Amarilla — Lima Expressway
End client: LAMSAC (Línea Amarilla S.A.C.)· 3,200 workers
14 km of urban expressway across Lima — and 174,471 PPE deliveries that no longer required a worker to walk 45 minutes to the warehouse
CHT — material consumption ratio per man-hour, multiplied across 3,200 workers
Before
S/. 0.64
PPE consumption per man-hour worked
After
S/. 0.52
with Logiflex
Improvement
S/. 0.12 / HHT
Context
Línea Amarilla is a 14-kilometer urban expressway across Lima, operated by LAMSAC (Línea Amarilla S.A.C.) under a public-works concession that connects the north (Independencia / Rímac) with the east of the city (La Molina) through a series of tunnels, viaducts and underpasses. CUMBRA — at the time still operating as GyM (Graña y Montero, before the 2020 rebrand) — executed the civil and electromechanical construction scope: 58 cuadrillas, 3,200 colaboradores at peak (3.5× the initial baseline), 24-hour operation. PPE delivery ran on a centralized warehouse model: workers walked an average of 45 minutes per delivery to pick up gear, foreman validated, supervisor signed, back-office digitized after the fact.
Challenge
Five process costs were eating the operation — none of them PPE material itself: 4 minutes per vale to fill the delivery slip, 3 minutes for foreman validation, 5 minutes for system data entry, 5 minutes for safety supervisor validation, and the elephant in the room — 45 minutes per delivery for worker wait + walk to and from the warehouse. Across the 174,471 deliveries the project generated, that was S/. 1.71M of pure process drag. Add S/. 221K for physical vales, archive storage (the legal requirement was 30 years), and office supplies, and the math made digitization a no-brainer — if it could actually be deployed across 58 cuadrillas on a 24-hour operation.
Solution
We deployed the Logiflex Logística Digital platform across the 14-kilometer corridor with a mobile-delivery twist: 58 cuadrillas worked on the highway face, and Logiflex brought the warehouse to them rather than making them walk to it. Each delivery captured with RENIEC-pattern digital signature, foreman validation in-app, automatic data entry (no back-office digitization), and the safety-supervisor approval cleared in the same flow. Across 10 months: 174,471 boletas generated (mobile + fixed combined), tracking the consumption of 3,200 colaboradores at the construction peak. CHT (consumption per man-hour worked) dropped from S/. 0.64 to S/. 0.52 — a S/. 0.12 saving on every single hour of work the project executed.