The growing intensity of commercial and business relations between the different regions and the peculiarities of the mountainous landscape, which made it imperative to surmount deep and high-water rivers, explains the boom in the construction of stone bridges. The best master builder of bridges was the great master Kolyu Ficheto, nevertheless the original Tryavna master builders Dimitar Sergyuv and Gencho Kanev did not fall short of the latter’s dexterity and originality. The latter built the bridges in the villages of Ganchovets in Dryanovo county and Skandaloto in Lovech county and many other.

The only bridges built by Dimitar Sergyuv can be seen in Tryavna. He used polychromy in his work, which was a distinctive feature of Trayvna artistic school.

The hunched / stonewaller bridge.  It was built in the period 1844 – 1846. It was a three-arched stone bridge with symmetrical structure, made of yellow sandstone, and had stone railing decorated with stone ornaments in the middle. The year of bridge commencement was inscribed on the keystone of the big opening „1844“. This bridge is not visible when looking at the square and remains hidden   behind the Clock Tower. Concealing the street view by its convex line, this bridge, together with the adjacent houses and the tower completely fuses with the square. It is about 25 meters long and about 3.80 meters wide. It has three lateral arched openings, the one in the middle being the biggest one with radius about 5.50 meters, whereas the radius of the other two openings on both sides is about 2 meters. The railing is made with two stone plates symmetrically laid in the middle, about 1.60 meters high each. In the interior side of the walls there were sculptured vases with flowers and signs. Today only the jug (“ibrik”) is preserved, for which the story tells it was meant to tease the people from Gabrovo town. Coming to Tryavna, they had to wash themselves with that jug to take off their impurity and sins and then enter the town. Quite on the contrary the people from Gabrovo believed it was the other way around – Tryavna people were supposed to wash themselves with the jug when going to Gabrovo. One way or the other, people still regard the jug as a symbol of the hospitality of Tryavna people. It is a cultural monument of local importance.

Dolniat bridge (the lower bridge). This bridge was built in 1863 by master builder Stoyan Bozhkov from Armyankovtsi hamlet, Tryavna county, under the supervision and based on a project created by Dimitar Sergyuv.  The bridge of Dolna Mahala (the lower neighborhood) 

In 1863 the residents of Dolna Mahala built a wooden bridge over the river that was later demolished and they took it up to build a new stone bridge.

For building that bridge, the residents of Dolna Mahala were praised by Petko Slaveykov himself, who wrote in the pages of Gayda (Bagpipe) newspaper that same year the following: “The residents of Dolna Mahala did a very good thing by putting up together to build the bridge over the river and we praise them for that … ”. That bridge was called “inat köprü” meaning the stubborn bridge because the people from Dolna Mahala (the lower neighborhood) built the bridge out of spite for the people from Gorna Mahala (the upper neighborhood).

Just to mention, it is a cultural monument as well.

The old Shivarov’s bridge is found in Kachavunska Mahala (Kachavun neighborhood) in Tryavna. It was made of unknown master builder. 

This bridge has one arch structure. The following sign was carved on its keystone: VL SHIVAROV REBUILT IT IN 1885. 

It is a cultural monument – realty of local importance.

Both before and after the Liberation, Bulgarian master builders preferred to construct solid stone “hunched” bridges. Nevertheless, innovations from the Western European practices penetrated more and more often the construction of bridges. A genuine solution of the original Bulgarian master builders was the construction of bridges with an even road plane. That method was first introduced by Nikola Fichev and was later adopted by many other master builders, including Gencho Kanev from Tryavna.