Sioux Narrows Bridge — Context Sensitive Replacement of a Heritage Timber Truss Bridge
Bibliographic record
Abstract
The Sioux Narrows Bridge in Northern Ontario was a 64m long timber truss structure originally constructed in the 1930's. It was located across a narrows on Lake of the Woods in the picturesque, historic community of Sioux Narrows in Northern Ontario and is owned by the Province of Ontario, Ministry of Transportation (MTO). It had been heralded as one of the longest single span timber bridges in the world. In light of its age and uniqueness the Province of Ontario listed the structure on the Ontario Heritage Bridge List [MofC 1983]. In 2002 the bridge was discovered to be in a state of progressive collapse and a decision was ultimately made to replace it. From a planning and engineering perspective the heritage designation required the project team to consider heritage and aesthetic issues as an integral component when examining alternatives to address the structural deficiencies. The final solution was one where the original heritage features of the bridge were preserved while at the same time providing a new, durable and highly functional bridge.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.002 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.003 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".