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statementVerified

Apollodorus’s Danube bridge is built as a completed crossing for the Dacian wars

Dio as public English and later engineering histories print a great Danube bridge under Trajan, attributed to Apollodorus. In the causal graph this event strengthens the driver Industrial-Policy Activism.

Sources: [1][2]

Read the full account

Dio as public English and later engineering histories print a great Danube bridge under Trajan, attributed to Apollodorus. The dated carrier is that later cluster. A military bridge is infrastructure; it also enabled the war (other rows).

Context

Shared credit with Apollodorus is required. Medium confidence on unique spans.

Trajan Shared work with other named actors remains in the record.

Trajan’s documented role is bounded by other offices and collaborators named in the sources below.

Conventional reign is 98–117 CE.

Why it matters

A printed bridge is not a 105 CE load-test certificate.

Who was responsible

Contribution type and responsibility level for each recorded actor — not sole-author shorthand.

  • Trajan

    Person

    Direct responsibility

    responsibility level 0.32 · verified

What changed

Fact → Driver → Indicator. Relationship strength orders the paths; it is not the observed indicator movement.

    1. FactApollodorus’s Danube bridge is built as a completed crossing for the Dacian wars
    2. strengthensDriverIndustrial-Policy Activism

    impact weight 0.4 · Effect from 1 January 105 · verified

    A printed bridge is not a 105 CE load-test certificate.

Evidence

The sources behind this fact and its verification state.

Verified2 sources on file
  1. 1.Cambridge studies on the age of TrajanCambridge University Press · High credibility · verified
  2. 2.LacusCurtius — Cassius DioUniversity of Chicago / LacusCurtius · High credibility · verified
What the sources establish

Trajan did not file a later UNESCO form, a later Loeb colophon, or a later museum label as a personal act.

Causal path

How this event connects to drivers and indicators in the graph.

  1. ActorTrajan
  2. contributed toFactApollodorus’s Danube bridge is built as a completed crossing for the Dacian wars
  3. strengthensDriverIndustrial-Policy Activism

Cite this page

Factrail. (2026). Apollodorus’s Danube bridge is built as a completed crossing for the Dacian wars. Factrail. https://factrail.ai/facts/trj-danube-bridge-as-later

https://factrail.ai/facts/trj-danube-bridge-as-later

Accessed 16 October 2026.

By the Factrail desk · Method: how we source and score · Last reviewed

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