Mračaj Bridge is located in the settlement of Mračaj, in the southern part of the Imotski Field, spanning the regulated channel of the Jaruga (Sija) stream. It was built in the late 19th century from finely dressed blocks of local stone and consists of two stone arches.
The arches rest on elongated stone piers with semicircular projections at both ends. The bridge is 11.1 metres long, while its roadway, including the parapets, is 6.1 metres wide. It is a valuable example of late 19th-century engineering architecture in the Imotski Field, harmoniously integrated into the surrounding landscape and recognized for its historical significance.