36 Hours Infrastructure Block on Thane – Kalva Slow Lines for 5th & 6th Line Work
Central Railway will operate 36 hours infrastructure block on Up and Dn slow lines between Thane and Kalva stations for carrying out cut and connection of newly laid track and commissioning of crossovers in connection with Thane – Diva 5th& 6th lines The block will be operated on Up and Dn slow lines from 02.00 pm on 8.1.2025 (Saturday) to 02.00 am of 10.1.2025 (Monday).
Works to be carried out during the block: During this block, the newly laid track between Thane and Vitava Road under Bridge will be cut and connected to the existing Dn and Up slow lines. Similarly insertion and commissioning of crossovers, turn outs, derailing switches in connection with yard remodeling and alteration in Interlocking arrangements at Thana and Kalva will be carried out during Block period. 7 tower wagons, 3 Unimat / Duomatic machines, 2 Diesel multi locos, one ballast rake, 1 DBKM etc will be used for carrying out engineering, electrical and signal and telecommunication works.
Due to this train running pattern will be as under:
Up slow / semi fast services leaving Kalyan from 1.00 pm on 8.1.2025 will be diverted on Up fast line between Kalyan and Matunga till 2.00 pm skipping halt at Thakurli, Kopar, Mumbra, Kalva, Nahur, Kanjurmarg and Vidyavihar stations further diverted on Up slow line.
After 2.00 pm Up slow / semi fast services will be diverted on Up fast line between Kalyan and Mulund skipping halt at Thakurli, Kopar, Mumbra and Kalva stations and will arrive destination 10 minutes behind schedule.
Dn slow / semi fast services leaving Dadar from 12.54 pm on 8.1.2025 to 1.52 pm will be diverted on Dn fast line between Mulund and Kalyan stations skipping halt at Vidyavihar, Kanjurmarg, Nahur, Kalva, Mumbra, Kopar and Thakurli stations.
After 2.00 pm, Up slow / semi fast services will be diverted on Dn fast line between Mulund and Kalyan stations skipping halt at Kalva, Mumbra, Kopar and Thakurli stations and will arrive destination 10 minutes behind schedule.
Suburban services will not be available at Kalva, Mumbra, Kopar and Thakurli stations during the block period.
Passengers boarding from Kalva, Mumbra, Kopar and Thakurli stations are advised to board trains from Thane, Diva, Dombivali and Kalyan respectively.
Railway Administration has arranged to run buses in coordination with Municipal Authorities for the benefit of passengers.
Dombivali Originating / terminating locals will not be available during the entire block period.
During the block period slow line locals will halt on fast line platforms at Thane, Dombivali and Diva.
Suburban Services will run as per schedule on 10.1.2025 (Monday)
Mail / Express Services:
Cancellation of Express trains Journey Commencing on 7.1.2025 & 8.1.2025 (Friday & Saturday)
- Train No. 12112 Amravati – Mumbai Express
- Train No. 12140 Nagpur – Mumbai Sevagram Express
- Train No. 17611 Nanded – Mumbai Rajyrani Express
Cancellation of Express trains Journey Commencing on 8.1.2025 & 9.1.2025 (Saturday &Sunday)
- Train No. 11007 / 11008 Mumbai – Pune – Mumbai Deccan Express
- Train No. 12071 / 12072 Mumbai – Jalna – Mumbai Janshatabdi Express
- Train No. 12109 / 12110 Mumbai – Manmad – Mumbai Panchvati Express
- Train No. 11401 Mumbai – Adilabad Nandigram Express
- Train No. 12123 / 12124 Mumbai – Pune – Mumbai Deccan Queen
- Train No. 12111 Mumbai – Amravati Express
- Train No. 12139 Mumbai – Nagpur Sewagram Express
- Train No. 11139 Mumbai – Gadag Express
- Train No. 17612 Mumbai – Nanded Rajyarani Express
Cancellation of Express trains Journey Commencing on 9.1.2025 & 10.1.2025 (Sunday &Monday)
- Train No. 11402 Adilabad – Mumbai Nandigram Express
- Train No. 11140 Gadag – Mumbai Express
Short termination of Express trains at Pune
- Train No. 17317 Hubballi – Dadar Express JCO 7.1.2025 & 8.1.2025
- Train No. 11030 Kolhapur – Mumbai Koyna Express JCO 8.1.2022 and 9.1.2025
Short Origination of Express trains from Pune
- Train No. 11029 Mumbai – Kolhapur Koyna Express JCO 9.1.2025 and 10.1.2025
- Train No. 17318 Dadar – Hubballi Express JCO 8.1.2025 and 9.1.2025
Source: https://cr.indianrailways.gov.in/
Here’s the verified, up-to-date information on the 36‑hour infrastructure block between Thane and Kalwa on the Central Railway, including latest updates for 2025:
Contents
🚧 36-Hour Infrastructure Block: Thane ↔ Kalva Slow Lines
Central Railway periodically conducts 36-hour infrastructure blocks for expanding and remodeling railway lines. A similar long-duration project was reported in 2025, and follow-up maintenance continues in 2025:
- A 36‑hour block took place on the Up and Down slow lines between Thane and Kalva, from 2:00 PM on Saturday, January 8 to 2:00 AM on Monday, January 10, 2025.
- Purpose: commissioning of the 5th & 6th tracks as part of the new Thane–Diva suburban corridor, including installation of crossovers, signalling modifications, and yard remodeling.
- During the block, suburban trains were diverted, and stations like Kalva, Mumbra, Kopar, Thakurli were skipped or suspended. Express services were also partially cancelled or terminated short of destination.
⚙️ Why The Block Was Needed
- Integration of newly laid tracks connecting Thane–Vithava Road to existing lines.
- Installing crossovers, derailing switches, turnout rails, and modifying interlocking systems between Thane and Kalva. These enable suburban traffic on the newly expanded lines. Works involved heavy machinery—tower wagons, Unimat/Duomatic track-laying machines, diesel locos, and ballast rake.
📣 Impact on Rail Services (During the Block)
- Suburban Services:
- Up slow/semifast trains from Kalyan (from 1:00 PM on Jan 8) were diverted onto the up fast line, skipping Kalva and nearby stations.
- Down trains from Dadar after 12:54 PM were switched to fast lines and bypassed stops including Kalva.
- Passengers from Kalva, Mumbra, Kopar, and Thakurli were advised to board from Thane, Diva, or Kalyan.
- CR also arranged bus transfers between these stations where commuter services were suspended.
- Express Trains: Trains such as Amravati Express, Nagpur Express, Deccan Express, Janshatabdi, Panchavati Express, and others were cancelled or short-terminated during the block days.
📌 Updated Context — Is It Happening Again?
- No recent public notifications as of 2025 indicate a new 36‑hour block between Thane and Kalva.
- However, CR continues megablock activities in the region:
- A longer 63‑hour mega block was executed at Thane station from May 30–June 2, 2025 for widening platforms 5 & 6, extending over 587 meters. Nearly 935 local trains were cancelled during the period.
- Recent maintenance blocks within the Vidyavihar to Thane corridor on the 5th/6th lines and Harbour lines (Vashi–Kurla) were reported on July 13, 2025.
These ongoing rail infrastructure enhancements in the Thane–Kalva suburban section likely involve periodic service blocks, although exact durations may vary by project.
🗺 Why This Matters for Travelers
- Suburban commuters on the slow line corridor between Kalva and Thane may encounter service diversions, skipped stops, or cancellations during such blocks.
- Express services may face temporary rerouting or short terminations.
- CR provides alternate bus links for affected stations to minimize inconvenience.
✅ At a Glance
| Detail | Description |
|---|---|
| 🕒 Last Major Slow-line Block | Jan 8–10, 2025 (36 hrs) |
| 🛠 Purpose | Thane–Kalva slow line cut/connect, interlocking changes |
| 🚇 Impact on Locals | Skipped stations (Kalva, Mumbra, etc.), diverted onto fast lines |
| 🚂 Express Train Impact | Partial cancellations/terminations |
| 📆 Recent Blocks | May–June 2025 (63 hrs); July 2025 (~megablock lines 5 & 6) |
| 🔄 Likely future disruptions | Maintenance blocks expected periodically for expansion |
🧭 Planning Tips for You
- If traveling between Thane and Kalva, check CR or local news updates 24–48 hours ahead for possible infra blocks.
- Consider alternative boarding/deboarding at Thane, Diva, or Kalyan when Kalva is impacted.
- Plan travel outside peak block timings or use alternate routes (e.g. buses) if slow-line services are disrupted.
- Long-term infrastructure work (e.g. platform widening or line realignment) may continue into late 2025—so expect occasional planned service disruptions.
Would you like me to:
- Monitor upcoming scheduled infrastructure blocks in the Mumbai suburban section?
- Help identify alternate train routes during maintenance?
- Check real-time train disruptions between Thane and Kalva before your journey?
Let me know how you’d like to plan—or if you need alternatives during upcoming maintenance windows!