title: Si-o-se-pol
text: The Allahverdi Khan Bridge (), popularly known as Si-o-se-pol (), is the largest of the eleven historical bridges on the Zayanderud, the largest river of the Iranian Plateau, in Isfahan, Iran.
  
  The bridge was built in the early 17th century to serve as both a bridge and a dam. It is a popular recreational gathering place, and is one of the most famous examples of Iran's Safavid architecture.
  
  History
  Si-o-se-pol (meaning the bridge of 33 Persian) was built between 1599 and 1602, under the reign of Abbas I, the fifth Safavid king (shah) of Iran. It was constructed under the supervision of Allahverdi Khan Undiladze, the commander-in-chief of the armies, who was of Georgian origin, and was also named after him. The bridge served particularly as a connection between the mansions of the elite, as well as a link to the city's vital Armenian neighborhood of New Julfa.
  
  In years of drought (2000–02 and 2013), the river was dammed upstream to provide water for Yazd province.
  
  Structure
  The bridge has a total length of  and a total width of . It is a vaulted arch bridge consisting of two superimposed rows of 33 arches, from whence its popular name of Si-o-se-pol comes, and is made of stone. The longest span is about . The interior of Si-o-se-pol was originally decorated with paintings, which were often described by travelers as erotic.
  
  There is a larger base plank at the start of the bridge, under which the Zayanderud flows, supporting a tea house, which is nowadays abandoned.
  
  Gallery
  
  Transportation
    Chaharbagh Street
    Motahari Street
    Kamaloddin Esmaeil Street
    Chahar Bagh Bala Street
    Mellat Street
    Ayenekhaneh Street
    Enqelab Metro Station
    Si-o-se Pol Metro Station
  
  See also
  Risbaf factory
  
  References
  
  Further reading
   
  
  Tourist attractions in Isfahan
  Bridges in Isfahan
  Bridges in Iran
  Bridges completed in 1602
  1602 establishments in Iran
  Safavid architecture