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Road Under Bridges & Subways
RCC boxes built by cut-and-cover, or cast beside the formation and pushed into place by jacking and rolling while trains keep running overhead.
Box pushing · Cut & cover · Live blocks
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Railway civil infrastructure · Since 2010
We build what trains run over and roads run under.
Box pushing beneath live track. PSC girders launched across rivers. Station buildings raised while trains keep arriving. Delivered for South Central, Southern and South Western Railway.
13+Years on the network
33Bridges & RUBs built
28Level crossings closed
3Railway zones served
Who we are
Railway civil work is unforgiving. That is the work we chose.
KCK Infra Projects is a railway civil contractor based in Kadapa, Andhra Pradesh, working across South India since 2010. Our structures sit under and over running track, and every one of them has to be handed back to the Railway inside a sanctioned block, to gauge, on schedule.
Founded and led by Sri K. Subba Rami Reddy, the firm works as a proprietorship, a partnership and through joint ventures depending on the scale of the package.
- South Central Railway — Guntakal Division & Construction Organisation, Secunderabad
- Southern Railway — Construction Organisation, Chennai & Egmore
- South Western Railway — Bangalore Division
₹133crWorks turnover, FY 2010–11 to FY 2022–23
How it is done
Putting a box under a line that never stops.
A road under bridge cannot close the railway. The box is built beside the track and moved into position inside a block of a few hours. Scroll through the sequence.
Step 01
Cut the approach, hold the track
Excavation begins either side of the formation while the line stays open. In rock, that means controlled breaking within metres of a running track, with the embankment supported throughout.
Step 02
Cast the box beside the line
RCC box segments are cast on a prepared bed alongside the formation, clear of traffic. Reinforcement, shuttering and curing all happen off the track, so the critical work is ready before any block is taken.
Step 03
Take the block, move the box
Inside a sanctioned traffic block the track is supported on released rails, and the box is jacked and rolled into its final position under the line. This is the hour that decides the job.
Step 04
Restore the track, open the road
Track is relaid and packed to gauge, the line is handed back, and the approach roads, wing walls and drainage are completed. The level crossing is gone for good.
What we build
Six things, done properly.
We do not spread across sectors. Everything here is railway civil work, and everything here we have built and handed over.
02
Road Over Bridges
Multi-span ROBs on pile foundations, combining PSC girder spans with composite steel-and-RCC deck spans to clear the tracks below.
PSC girders · Composite decks · Piling
03
Major Railway Bridges
Ageing steel girder bridges replaced with PSC ‘U’ girder spans, including substructure in river conditions and full protective works.
18.70 m PSC ‘U’ girder · River protection
04
Station Buildings & Amenities
Whole station complexes — buildings, platforms, shelters, foot over bridges, toilets, drainage, circulating areas and approach roads.
Buildings · Platforms · FOBs · Shelters
05
Platform & Permanent Way
Platform extension and surfacing, cover over platform, washable aprons, AT welding of rail joints, watering and drainage arrangements.
AT welding · Washable aprons · COP
06
Level Crossing Elimination
Unmanned and manned crossings closed and replaced with grade-separated structures — the biggest safety programme on the network.
28 crossings eliminated₹0cr+Works turnover
0Railway packages
0Bridges & RUBs
0Railway zones
Selected work
Built, handed over, in service.
Completed 2019
Nineteen Road Under Bridges, Dharmavaram–Pakala
19 RUBs · 6 sections · LC 39 to LC 146
South Central Railway
Completed
Station Buildings — Thiruthuraipoondi, Thillaivilagam & Muthupet
3 stations · Buildings, platforms, FOB, shelters
Southern Railway
Completed 2018
Road Over Bridge, Regadipalli–Vanganur
Km 347/33–35 · 3 spans · 42.496 m composite girder
South Central Railway
Completed 2019
Major Bridges 233 & 251, Pandavayar & Vellaiyar
6 spans · 3 × 18.70 m PSC ‘U’ girder each
Southern Railway
Completed
Tirupati Station — Southern Entry Development
Service buildings · PF 6 & COP · FOB extension
South Central Railway
Completed 2015
Subways at Nagasamudram, Chakarlapalli & Pandiparthi
3 subways · 5.0 × 4.5 m RCC box · 3 tracks
South Western RailwayWhy KCK
What the Railway actually gets.
Work under live traffic
Box pushing, girder launching and platform work carried out inside sanctioned blocks, with the line handed back on time.
Certificates, not claims
Every package in our record carries a work completion certificate issued by the Railway. Available on request.
Nineteen sites at once
Our largest package ran nineteen structures across six sections simultaneously — parallel fronts, crews and plant, one programme.
Get in touch
Tell us about the package.
Tender enquiries, sub-contract packages and joint ventures — send the scope and we will come back with our record on similar work.