|First service||27 September 2011|
|Current operator(s)||Southern Railway zone|
|Start||Chennai Egmore (MS)|
|Distance travelled||395 km (245 mi)|
|Average journey time||08 hours 27 minutes|
|Class(es)||First AC, AC 2 tier, AC 3 tier, Sleeper Class, General|
|Auto-rack arrangements||Not Available|
|Catering facilities||Not Available|
|Observation facilities||Rake Sharing with 16105 / 16106 Chendur Express|
|Entertainment facilities||Not Available|
|Baggage facilities||Below the Seats|
|Track gauge||1,676 mm (5 ft 6 in)|
|Operating speed||46.5 km/h (28.9 mph) (average with halts)|
The Mannai Express is an express train operated by the Southern Railway zone of the Indian Railways. This train connects Chennai Egmore and Mannargudi in the Indian state of Tamil Nadu. The traffic was opened in 2011.
This train is given on the name of Mannai which is another name of Mannargudi town, the word Mannargudi is derived from the Tamil word Mannar referring to Vishnu and gudi referring to a place, meaning the "Place of Vishnu"
The 16179 / 80 Mannai Express has one AC-1 Tier, one AC 2-tier, one AC 3-tier, 11 sleeper class, three general unreserved & two SLR (seating with luggage rake) coaches . It doesn't carries a pantry car coach.
As with most train services in India, Coach Composition may be amended at the discretion of Indian Railways depending on demand.
The 16179 Chennai Egmore - Mannargudi Mannai Express covers the distance of 395 km (245 mi) in 8 hours 20 mins (47 km/hr) & in 8 hours 35 mins as the 16180 Mannargudi - Chennai Egmore Mannai Express (46 km/hr).
As the average speed of the train is lower than 55 km/h (34 mph), as per railway rules, its fare doesn't includes a Superfast surcharge.
The frequency of this train daily and its shares rakes with Chendur Express.
16179 / 80 Mannai Express runs from Chennai Egmore Tambaram via Chengalpattu Junction, Viluppuram Junction, Cuddalore Port Junction, Chidambaram, Sirkazhi, Mayiladuthurai Junction, Kumbakonam, Thanjavur Junction, Nidamangalam Junction to Mannargudi.
- "Introduction of Mannai, daily operation of Chendur, shot in the arm for delta districts". The Hindu. 28 September 2011. Retrieved 3 March 2012.
- , thehindu.com, 05 August 2015