Question: When did the empire, which was responsible for creating the Nysa Bridge, begin?

Context paragraphs:
Einang Sound Bridge: The Einang Sound Bridge (Norwegian: "Einangsundet bru" ) is a road bridge in the municipality of Vestre Slidre in Oppland county, Norway.  The bridge crosses the Einang Sound and Slidre Fjord, and it is a branch of Norwegian County Road 261 connecting it to European route E16.  The bridge is a suspension bridge with three spans creating a total length of 166 m .  The bridge was built in 1963.

Otto Feige (naval officer): Otto Feige (21 September 1882 in Nysa - 2 January 1951 in Kaufbeuren) was an Admiral of the German "Kriegsmarine" (War Navy) during World War II.  He had initially served in the "Kaiserliche Marine" (Imperial Navy) of the German Empire.  He was born in Neisse in Silesia on 21 September 1882.

History of the Roman Empire: The history of the Roman Empire covers the history of Ancient Rome from the fall of the Roman Republic in 27 BC until the abdication of the last Western emperor in 476 AD.  Rome had begun expanding shortly after the founding of the Republic in the 6th century BC, though it did not expand outside of the Italian Peninsula until the 3rd century BC.  Civil war engulfed the Roman state in the mid 1st century BC, first between Julius Caesar and Pompey, and finally between Octavian and Mark Antony.  Antony was defeated at the Battle of Actium in 31 BC.  In 27 BC the Senate and People of Rome made Octavian "imperator" ("commander") thus beginning the Principate, the first epoch of Roman imperial history usually dated from 27 BC to 284 AD; they later awarded him the name Augustus, "the venerated".  The success of Augustus in establishing principles of dynastic succession was limited by his outliving a number of talented potential heirs: the Julio-Claudian dynasty lasted for four more emperors—Tiberius, Caligula, Claudius, and Nero—before it yielded in 69 AD to the strife-torn Year of Four Emperors, from which Vespasian emerged as victor.  Vespasian became the founder of the brief Flavian dynasty, to be followed by the Nerva–Antonine dynasty which produced the "Five Good Emperors": Nerva, Trajan, Hadrian, Antoninus Pius and the philosophically inclined Marcus Aurelius.  In the view of the Greek historian Dio Cassius, a contemporary observer, the accession of the emperor Commodus in 180 AD marked the descent "from a kingdom of gold to one of rust and iron"—a famous comment which has led some historians, notably Edward Gibbon, to take Commodus' reign as the beginning of the decline of the Roman Empire.

Cascade Bridge: The Cascade Bridge is a historic structure located in Burlington, Iowa, United States.  In April 1896 the Burlington City Council approved a proposal to have city engineer S.D. Eaton advertise for plans and estimates for a bridge on Main Street that would span Cascade Ravine.  The Cascade Lumber Company had petitioned for the bridge.  The city contracted with the Cedar Rapids, Iowa firm of Boynton & Warriner to design the structure and the Milwaukee Bridge and Iron Works to erect the span.  The city was responsible for building the concrete substructure.  The bridge was completed in the fall of 1896, and is composed of four spans.  The span length is 160 ft , and its total length is 464 ft .  The span is a Baltimore deck truss bridge with Pratt deck trusses at both ends.  The structure is supported by stone and concrete abutments with concrete pedestals and a single concrete-filled steel cylinder pier.  Over the years the original deck has been replaced, and concrete has been applied to the stone abutments.  Otherwise the structure has been unaltered.  The bridge was listed on the National Register of Historic Places in 1998.

Ulnes Bridge: The Ulnes Bridge (Norwegian: "Ulnes bru" ) is a road bridge in the municipality of Nord-Aurdal in Oppland county, Norway.  The bridge crosses Stronda Fjord at Ulnes, just northwest of Ulnes Church, and it is a branch of Norwegian County Road 261 connecting it to European route E16.  The bridge was opened on June 20, 2003.  It is a wooden bridge with three spans of 35 m each, creating a total length of 105 m .  The new wooden bridge replaced an older concrete bridge from 1932 that was narrow and in poor condition.

Jamsu Bridge: The Jamsu Bridge crosses the Han River in South Korea and connects the districts of Yongsan-gu and Seocho-gu.  The bridge was completed in 1976, and lies just meters above the waterline, allowing the bridge to submerge during periods of high rainfall.  In 1982, Banpo Bridge was built on top of the Jamsu Bridge, creating a two-deck bridge.

Nysa Bridge: The Nysa Bridge is a late imperial Roman bridge over the Cakircak stream in Nysa (modern Sultanhisar) in the ancient region of Caria, modern-day Turkey.  The 100 m long substructure was the second largest of its kind in antiquity, after the Pergamon Bridge.

Burlington County Bridge Commission: The Burlington County Bridge Commission is a public agency responsible for the operation and maintenance of several bridges in Burlington County, New Jersey across the Delaware River.  It now manages eight bridges, including the Tacony-Palmyra Bridge, the Burlington-Bristol Bridge, and the Riverside-Delanco Bridge.  Minor bridges operated by the Commission are the Pennsauken Creek Bridge, Pompeston Creek Bridge, Route 73 Overpass, Swede Run Bridge and the Twin Pipe Culvert, all along County Route 543.

Beaver River Bridge: The Beaver River Bridge (also called "Beaver Valley Bridge") is a bridge that carries the Pennsylvania Turnpike across the Beaver River in North Sewickley Township, Beaver County, Pennsylvania.  Built in 1951 and opened in 1952, the 65 -year-old bridge is being redesigned with construction of a new span not expected to begin until 2017 or later.  The Beaver River Bridge has a total length of 1546 ft and a clearance below of 170 ft making it higher than the Delaware River Bridge's 160 ft clearance on the PA Turnpike's eastern terminus in Bucks County, but lower than the Hawk Falls Bridge's 190 ft clearance on the Pennsylvania Turnpike's Northeast Extension in Carbon County.  The Beaver River Bridge is an example of a mid-20th century cantilever deck truss with preservation groups making efforts to save it from demolition as its structural style is becoming rare.

Little Belt Bridge: The Little Belt Bridge (Gamle Lillebæltsbro), also known as "The Old Little Belt Bridge", is a truss bridge over the Little Belt strait in Denmark.  The first bridge to have been constructed over the strait, it spans from Snoghøj on Jutland to Kongebrogaarden on Funen.  It is owned by the state and Banedanmark, the Danish railway authority, is responsible for its maintenance.  The bridge was the first step in linking the three parts of Denmark by road and rail, with the second step completed with the Great Belt Bridge in June 1998; previously, only boats and later ferries had been used to transport people over the belts.

Supporting paragraphs: Nysa Bridge History of the Roman Empire
Answer: 6th century BC