Si-o-seh pol

si o se pol

Allāhverdi Khan Bridge, popularly known as Si-o-seh pol [ˈsiː oˈseh ˈpol], “The bridge of thirty-three spans”) is one of the eleven bridges of Isfahan, Iran and the longest bridge on Zayandeh River with the total length of 297.76 metres (976.9 ft). It is highly ranked as being one of the most famous examples of Safavid bridge design.

It was constructed by the finance and the inspection of Allahverdi Khan Undiladze chancellor of Shah Abbas I, an Iranian ethnic Georgian, it consists of two rows of 33 arches from either sides, left and right. There is a larger base plank at the start of the bridge where the Zayandeh River flows under it, supporting a tea house which nowadays is abandoned due to the shortage of water and the river drought.

Khaju Bridge


Khaju Bridge is a bridge in the province of Isfahan, Iran, which has been described as the finest in the province. It was built by the Persian Safavid king, Shah Abbas II around 1650, on the foundations of an older bridge. Serving as both a bridge, and a dam (or a weir), it links the Khaju quarter on the north bank with the Zoroastrian quarter across the Zayandeh River. Although architecturally functioning as a bridge and a weir, it also served a primary function as a building and a place for public meetings. This structure was originally decorated with artistic tilework and paintings, and served as a teahouse. In the center of the structure, a pavilion exists inside which Shah Abbas would have once sat, admiring the view. Today, remnants of a stone seat is all that is left of the king’s chair. This bridge is one of the finest examples of Persian architecture at the height of Safavid cultural influence in Iran. In words of Upham Pope and Jean Chardin, Khaju bridge is “the culminating monument of Persian bridge architecture and one of the most interesting bridges extant…where the whole has rhythm and dignity and combines in the happiest consistency, utility, beauty, and recreation.

Band-e Kaisar


The Band-e Kaisar (“Caesar’s dam”‎‎), Pol-e Kaisar (“Caesar’s bridge”), Bridge of Valerian or Shadirwan was an ancient arch bridge in Shushtar, Iran, and the first in the country to combine it with a dam. Built by a Roman workforce in the 3rd century AD on Sassanid order, it was also the most eastern Roman bridge and Roman dam, lying deep in Persian territory. Its dual-purpose design exerted a profound influence on Iranian civil engineering and was instrumental in developing Sassanid water management techniques.

The approximately 500 m long overflow dam over the Karun, Iran’s most effluent river, was the core structure of the Shushtar Historical Hydraulic System from which the city derived its agricultural productivity, and which has been designated by the UNESCO as Iran’s 10th World Heritage Site in 2009. The arched superstructure carried across the important road between Pasargadae and the Sassanid capital Ctesiphon. Many times repaired in the Islamic period, the dam bridge remained in use until the late 19th century.

Shahrestan Bridge


Shahrestan bridge is the oldest bridge on Zayandeh Rud in Iran. The foundations are from the 3rd to 7th century Sasanian era, but the top was renovated in the 10th century by the Buyids and finally during the 11th century Seljuk period. However the architectural style is totally Sasanian. The bridge was built in two parabolic shapes. The vertical parabolic component means that the middle point of the bridge is the highest part. The horizontal parabolic produces a bend to the west strengthening it against the flow of the river. This bridge is 107.8 metres long and an average of 5.2 metres wide. It has two levels of arches, 13 in the bottom and 8 on the top. The higher sluices quickened the passage of water during floods, thus taking pressure away from the structure. About 100 metres away from the bridge, the Zayandeh Rud has recently been diverted towards the south and an artificial lake has been established around the bridge to protect it from further damage.

Marnan Bridge


Marnan Bridge is a historical bridge in Isfahan, Iran. The current structure of the bridge dates back to the Safavid era, but its foundations are older and possibly as old as the Shahrestan bridge, which dates back to the sasanian era.

Aji Chay Bridge


Aji Chy Bridge is one of the oldest bridges Northwest of Tabriz on the Aji Chay river. This bridge was connecting Tabriz to the North of Azerbaijan. It was also a major element in connecting East and Western parts of the Silk road. The bridge has been restored and damaged numerous times during the course of history either by natural disasters or during the wars happened in the region. The latest major reconstruction of the bridge was performed in the 19th century during Abbas Mirza’s governorship by architect Hadj-Seyed-Hossein Tajer. The bridge includes 16 spans with an overall length of 105 meters and width of 5 meters. Due to several times of restoration and reconstruction the bridge doesn’t have a uniform architecture. Three spans out of 16 are semi circular shape while rest of the spans are in zig zag shape. Recently the restoration of the bridge was performed by Iranian Organization of Cultural Heritages and registered in Iranian national heritages with number 2516.

In second half of the last century a new bridge has been built next to the ancient bridge and traffic transferred to the new bridge. The old bridge is open only for pedestrian visitors.

Joubi Bridge


Joui Bridge, also called the Choobi Bridge, is a bridge in Isfahan, Iran. It was built in 1665, during the Safavid era.

The Joui Bridge is located between Khaju and Ferdowsi bridges. It is 147 meters long and 4 meters wide, with 21 arches. It was built during the reign of Shah Abbas II to irrigate and inter-relate the king’s gardens on both sides of the river. The bridge and the two parlours within were for the exclusive use of the shah and his courtiers. Nowadays the parlours are being used as tea houses.

Kara Su Bridge

Kara Su Bridge also known as Zaqan is a bridge in Ardabil, north-west Iran. It bridges the Baliqly Chay River. The bridge has seven arches and was originally built as far back as the Safavid dynasty. The bridge was last renovated in about 1920.

Khodaafarin Bridges


Khodaafarin Bridges are two arch bridges across the Aras River which connect the territory of the partially recognized Nagorno-Karabakh Republic, which is de jure part of Azerbaijan with Iran. The first one with 11 arches was built in the 11–12th centuries and the second with 15 arches in the 13th century.

Pol Sangi


or Sangi Bridge is a bridge in Tabriz, Iran, over Quri River.

Pol-e Siah


Pol-e Siah, or the Black Bridge, in Ahvaz, Iran, is a national heritage site.

Qari Bridge


Qari Bridge is a historic stone bridges in Tabriz, Iran, over the Quri River. It has been built during Qajar dynasty, and is a part of Seghat-ol-eslam street, connecting Bazaar of Tabriz to the northern districts of Tabriz, among them Sheshgelan and Davachi. During Pahlavi dynasty, a smaller bridge was built for the pedestrians.

Kiz Bridge


is a historical bridge near the Mianeh in East Azerbaijan.

The age of the bridge is unknown, some archeologists date it to the Sassanid era while other attribute to as being 8th centuryAD Muslim era construct. The bridge is constructed of three arches with the center arch narrower than the respective side archs.

Old Bridge of Dezful


The Old Bridge of Dezful is located near the city of Dezful in South Western Iran. This bridge connects the western and eastern part of the city of Dezful.
The foundation for the bridge is said to be 1700 years old and goes back to the Sassanid dynasty. The bridge was founded by the order of the Sassanid king, Shapoor I, using seventy Roman prisoners of war. The bridge has been repaired and rebuilt over the years by King Azdodole Deilami, Saffavid and Pahlavi dynasties.

Cars are no longer permitted to use the bridge, because of its historic value.