Band-e Kaisar (Valerian Bridge-Dam, Shushtar — Pol-e Kaisar)
بند قیصر · Caesar's Dam · Bridge of Valerian · Shadirwan
Sassanid Early (Shapur I, 241–270 CE) built by Roman captives·Sassanid Persian with Roman engineering corps (Legio)·🇮🇷 Khuzestan Province, Shushtar County, Karun River, Shushtar Historical Hydraulic System, Iran
About
About Band-e Kaisar (Valerian Bridge-Dam, Shushtar — Pol-e Kaisar)
Easternmost Roman engineering work: a 500-m combined arch bridge (41 arches) and weir-dam built ca. 260–270 CE by Roman prisoners of Emperor Valerian captured by Shapur I, forming the head of Shapur's Shushtar hydraulic divert. Band-e Kaisar raised the Karun 4 m to feed the Gargar canal — a 10-km man-made cut with the Salasel Castle diversion, Dahaneye Shahr tunnel, Mizan Dam and 33 water mills — irrigating 40,000 ha of Mianab plain. Stone-on-Roman cement core clad in limestone; destroyed by flood in 1885, now 28 arches survive as UNESCO 1315 centrepiece (2009). It is the first dam–bridge hybrid in Iran and the easternmost Roman bridge–dam.
Why it mattersOnly Roman-built dam–bridge outside Mediterranean; anchors Sassanid hydraulic continuity.
Open questions
Mysteries & theories
Mysteries
- 01Roman prisoner numbers
Theories
- 01Shapur prestige hydraulic engineering
Theories are interpretations, not findings. The seal above tells you how much scholarly weight the place carries.
History
How it came to be
- Built
- c.260 – 270 CE (Shapur I, Valerian prisoners)
- Period
- Sassanid Early (Shapur I, 241–270 CE) built by Roman captives
- Culture
- Sassanid Persian with Roman engineering corps (Legio)
- Builders
- Roman POW workforce under Sassanid Shapur I engineers
- Purpose
- Raise Karun to feed Gargar diversion canal, mills and Mianab irrigation
- Abandoned
- Still partially functional until 1885 flood
- Rediscovered
- 19th century Curzon; 2009 UNESCO listing
- Excavation
- Partially excavated
260 CE
Valerian captured at Edessa, marched to Shushtar
1885
Flood destroys 13 arches
On the ground
Structures & features
32.0538° N · 48.8485° E · 45 m · 2 mapped features
Gargar Canal Head Diversion
canalGargar canal intake at south abutment of Band-e Kaisar weir
32.0520° N · 48.8500° ERoman Arch 12 (5.9 m span)
bridgeSurviving Roman arch 12 with limestone intrados and cement core
32.0540° N · 48.8480° E
Gallery