Tatarna Bridge, Modern road bridge over Lake Kremasta, Central Greece.

Tatarna Bridge is a box girder road bridge over the artificial Lake Kremasta, on the border of Aetolia-Acarnania and Evrytania. It has three spans, the largest 196 m wide, and was designed by the civil engineer Aristarchos Oikonomou. The nearest village is Triklino.

A single-arch stone bridge, probably built in the mid-17th century by local master builders, once crossed the Achelous here; its date is unknown. It was submerged by the Kremasta artificial lake after the dam was built in the 1960s. The present bridge, designed by Aristarchos Oikonomou, was built between 1971 and 1973.

The bridge carries the name of the Virgin Tatarna monastery from 1556, marking the historical connection between infrastructure and religious heritage in this region.

The structure carries the GR-38 highway and connects the towns of Agrinio, Karpenisi, and Lamia as a key transportation route. Drivers should be aware of weather conditions that can affect traffic crossing the lake.

The old stone bridge and the spring Mardacha beside it now lie under Lake Kremasta, formed by the dam built in the 1960s. The new bridge stands on the Aetolia-Acarnania–Evrytania border, with Triklino as the nearest village. Locals also point to a hole near the bridge where opponents of the National Liberation Front were thrown; a monument nearby commemorates it.