The bridge was constructed entirely from stone masonry, avoiding the use of steel or reinforced concrete.
It is a critical component of the historic metre-gauge line that was later converted to broad gauge while preserving the original stone arches.
The structure serves as a gateway to the Shendurney Wildlife Sanctuary.
The alignment of the bridge was specifically designed to handle the sharp curves of the Western Ghats rail path.
The 13 Arch Bridge, known locally as Kazhuthurutti Bridge, is a historical railway structure located within the Thenmala Ecotourism zone in Kerala. Constructed by the British in the early 20th century, the bridge is part of the Kollam-Sengottai railway line. It is engineered with 13 distinct stone masonry arches, a design choice that remains a focal point for architectural interest. The bridge spans the Kazhuthurutti River, blending into the surrounding forested landscape. It serves as an active section of the heritage rail route connecting the Western Ghats to the plains. Visitors view the structure from the nearby road or designated viewpoints along the Thenmala route. It stands as an example of colonial-era engineering applied to rugged, mountainous terrain.
The roadside viewpoint facing the bridge provides a clear lateral view of all 13 arches spanning the valley.
Park your vehicle at the designated Thenmala ecotourism parking area and walk to the bridge viewing point.
Visit during the monsoon season to see the river beneath the bridge at full capacity.
Carry binoculars if you wish to observe the architectural details of the arches from a distance.
Do not attempt to climb or walk on the railway tracks, as this is a high-security zone for active trains.
