Congress Street Bascule Bridge Reconstruction
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
The Congress Street Bascule Bridge is one of the few four leaf bascule bridges in the country and is located on a major route that serves the Chicago Loop. The bridge was completed in 1954 and spans the South Branch of the Chicago River. In 2010, the Illinois Department of Transportation (IDOT) embarked on a major rehabilitation of the movable bridge superstructure as well as the electrical and mechanical systems. Walsh Construction Company of Chicago Illinois (Walsh) was awarded the work for the project. Because of the complexity of construction work, IDOT required the contractor to retain the services of a Movable Bridge System Coordinator to work with the contractor to verify that all aspects of the work resulted in a fully operational bridge that met the requirements of the project specifications. Collins Engineers Incorporated of Chicago (Collins) was selected by Walsh to perform this work. The authors discuss the construction engineering design and construction techniques required to rehabilitate a movable bridge structure of this size and complexity. The construction engineering aspects of the work include modeling the truss under various stages of demolition and erection to determine stability and to ensure that there are no overstress conditions during the work, temporary jacking struts to replace load carrying members, pull down procedures prior to placing the leaf in operation, evaluation of crane loadings, bridge balancing both for temporary conditions and final completion, live load and anchor column adjustment, coordination of shop drawings and other submittals, and other temporary works required to complete the construction. The work required the close coordination between IDOT, the designer PB Americas, Walsh and Collins to complete the work efficiently.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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 it