Kinniya Bridge is known to be the longest bridge in Sri Lanka having a length of 396 metres. It crosses the lagoon area that is surrounded by Koddiyar Bay and the Tambalagam Bay. It connects Trincomalee with Kinniya, It allows the civilians to cross the Kinniya lagoon to reach Kinniya and Muttur areas using the A15 highway.
The bridge was completed and declared open to the public on 20 October 2009. This was done by President Mahinda Rajapaksa himself. Before that, the Manampitiya Bridge was Sri Lanka's longest bridge. The bridge was made with the financial assistance of the Saudi Arabian government.