Piling work on Assam's second Saraighat rail-cum-road bridge over the Brahmaputra is set to begin in October 2026, once the monsoon recedes, with the Northeast Frontier Railway (NFR) targeting completion by December 2029. The ₹1,473.77-crore project, sanctioned in the 2023–24 financial year and awarded to engineering major Larsen & Toubro (L&T) on an EPC basis, will run for 7.062 km between Agthori and Kamakhya, and is expected to finally break the chokehold that the 1960s-era original Saraighat Bridge still holds over Guwahati's cross-river traffic.
Background
The original Saraighat Bridge, inaugurated by Prime Minister Jawaharlal Nehru in the 1960s, was the first bridge ever built across the Brahmaputra and remains a foundational piece of infrastructure for the entire Northeast. Its double-decker design — a rail line below and a road carriageway above — made it the single physical link connecting Guwahati on the south bank to North Guwahati and, beyond that, to the rest of the region's rail and road network heading toward Rangiya, Kokrajhar and onward.
That single-corridor design has aged badly against the city's growth. Guwahati's population and vehicle count have multiplied many times over since the bridge opened, and the 1,275-metre structure — built for a much smaller traffic load — has become one of the most congested chokepoints in the Northeast. A second, road-only bridge, built parallel to the original and now commonly called the New Saraighat Bridge, opened on 28 January 2017 specifically to siphon off some of that road traffic. But rail traffic still depends entirely on the original bridge's lower deck, and road congestion on the older structure has continued to worsen, compounded by the bridge's age-related maintenance needs — including a two-month full closure of the old bridge that began on 13 July 2026 for repair work, during which traffic had to be diverted onto the newer parallel crossing.
The second Saraighat rail-cum-road bridge now moving to construction is designed to solve both halves of that problem at once: a dedicated new rail corridor to relieve the original bridge's lower deck, and an additional road carriageway to further ease pressure on both existing crossings.
Key Details
According to project details confirmed by the Northeast Frontier Railway and reported by regional outlets including The Assam Tribune and The Sentinel, the new bridge project includes:
- A total corridor length of 7.062 km between Agthori and Kamakhya, of which the river-crossing bridge section itself is approximately 1.3 km.
- A steel composite girder bridge design for the river-crossing stretch, chosen for its strength-to-weight advantages over a river as wide and seasonally turbulent as the Brahmaputra.
- A double-decker layout matching the original bridge's concept: two railway lines on the lower deck, and a three-lane road carriageway plus a pedestrian footpath on the upper deck.
- An estimated project cost of ₹1,473.77 crore, sanctioned in FY2023–24.
- Execution by Larsen & Toubro under an Engineering, Procurement and Construction (EPC) contract, with EPC tender documentation in the final stages of being floated as of September 2026.
- A construction sequencing target that has piling work — the foundational work of sinking deep piers into the riverbed — starting in October 2026, once monsoon-swollen river flows subside enough for barge-based construction to proceed safely.
- A targeted completion date of December 2029, which NFR officials have described as the outer boundary for the project, meaning an on-time finish would put the bridge into service roughly three years from the start of piling.
Officially, the new bridge is also being framed as part of a larger railway upgrade: the doubling of the existing Agthori–Kamakhya railway line, which currently operates as a single track and is a known bottleneck for train scheduling into and out of Guwahati from the south bank. A doubled line paired with a dedicated second rail crossing would allow significantly more train movements per day without the scheduling conflicts that a single shared line forces today.
At a Glance
| Crossing | Opened / Expected | Type | Primary Role |
|---|---|---|---|
| Original Saraighat Bridge | 1960s (Nehru-era) | Double-decker: rail (lower) + road (upper) | First-ever Brahmaputra crossing; still carries all rail traffic |
| New Saraighat Bridge | 28 January 2017 | Road only, 3 lanes | Relief road crossing parallel to the original bridge |
| Second Saraighat Rail-cum-Road Bridge | Targeted December 2029 | Double-decker: 2 rail lines (lower) + 3-lane road + footpath (upper) | Dedicated second rail corridor plus additional road capacity |
Local Impact
For Guwahati commuters, the most immediate benefit once the bridge is complete will be to road traffic that currently backs up for 75 to 90 minutes at peak hours crossing between the south bank and North Guwahati — delays caused in large part by the original bridge's mixed-use design and its ongoing maintenance vulnerabilities, as the July 2026 closure demonstrated. Spreading road traffic across three crossings instead of two should meaningfully cut those peak-hour wait times, particularly for residents and commuters of North Guwahati, Rangiya-bound traffic, and freight movement heading toward Lower Assam and beyond.
For rail passengers and freight operators, a dedicated second rail crossing paired with the Agthori–Kamakhya doubling is arguably the more consequential change. A single-track rail bottleneck across the river has long constrained how many trains NFR can run through Guwahati in a given window, affecting both passenger train punctuality and the speed at which freight — including goods critical to the region's economy — can move in and out of the Northeast's rail network. Increased capacity here has knock-on effects for supply chains across all eight Northeastern states that route rail traffic through Guwahati.
The project will also generate substantial construction-phase employment in the Agthori–Kamakhya corridor over its roughly three-year build period, along with the usual local economic activity that accompanies a large EPC contract — housing, transport and materials demand around the site.
What Happens Next
With EPC tender documentation in its final stages, the next formal milestone is the floating and award confirmation of the construction tender, expected in the near term given the October 2026 piling start target. Barring monsoon-related delays — a real risk given the Brahmaputra's seasonal flow patterns, which is precisely why piling is scheduled to begin only after the monsoon recedes — construction is expected to proceed in phases: foundation and pier work first, followed by the steel composite girder erection over the river, and finally the deck-level rail and road works.
NFR has set December 2029 as its target, though large river-crossing infrastructure projects in India have historically seen timeline slippage tied to monsoon disruption, land and approach-road acquisition, and steel supply logistics. Residents and commuters should expect periodic construction-related updates and, potentially, localized traffic management changes around the Agthori and Kamakhya approach points as work progresses over the next three years.
Frequently Asked Questions
Why does Guwahati need a second Saraighat rail-cum-road bridge?
The original 1960s Saraighat Bridge still carries all rail traffic across the Brahmaputra at Guwahati on a single-track lower deck, while its road deck remains a major congestion point despite a parallel road-only bridge added in 2017. The new bridge adds a dedicated second rail corridor and a third road crossing to relieve both.
How much will the second Saraighat bridge cost?
The project was sanctioned in FY2023–24 at an estimated cost of ₹1,473.77 crore and is being executed by Larsen & Toubro under an EPC contract.
When will construction start and finish?
Piling work is expected to begin in October 2026, after the monsoon season, with the Northeast Frontier Railway targeting completion by December 2029.
Where exactly will the new bridge be built?
The project covers a 7.062 km stretch between Agthori and Kamakhya, with the river-crossing bridge section itself around 1.3 km long, built as a steel composite girder structure.
Will the new bridge carry both trains and road traffic?
Yes. Like the original Saraighat Bridge, it is designed as a double-decker structure — two railway lines on the lower deck, and a three-lane road carriageway with a footpath on the upper deck.
Is this connected to any other railway upgrade?
Yes. The new bridge is linked to the doubling of the existing single-track Agthori–Kamakhya railway line, which is expected to significantly increase how many trains can move through Guwahati's rail network without scheduling conflicts.
What is the current state of traffic on the existing Saraighat bridges?
The original bridge remains prone to peak-hour delays of 75 to 90 minutes and has needed extended maintenance closures, such as a two-month shutdown that began 13 July 2026, during which all road traffic was diverted to the 2017-built New Saraighat Bridge.
Who is executing the project?
Larsen & Toubro (L&T) has been awarded the Engineering, Procurement and Construction (EPC) contract for the project, with tender documentation in its final stages as of September 2026.
Sources
The Assam Tribune, The Sentinel (Assam), Northeast Today, HelloRail, and GKToday, with background from Northeast Frontier Railway (NFR) project disclosures.