Page:Final Report - The Columbia River Interstate Bridge.pdf/14

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January 11, 1915, Engineers presented final detailed plans and specifications.
January 11, 1915, Commission adopted plans and specifica— tions and ordered work advertised.
February 23, 1915, Commission received bids for all principal construction work.
February 27, 1915, Commission awarded contracts for principal construction work.
March 6, 1915, Actual construction formally started.

Engineers presented and Commission adopted plans and specifications for Derby Street approach embankment.

Commission received bids for Derby Street approach embankment.

Commission awarded contract Derby Street approach embankment.

Final approval of plans given by Secretary of War.

Engineers presented and Commission adopted plans and specifications for pavement of approach embankments.

Commission received bids for pavement of approach embankments.

Commission awarded contract for pavement of approach embankments.

Commission awarded contract making purchase of materials for lighting system.

Commission awarded contract for constructing lighting system.

Bridge formally opened to trailic.

Engineers rendered final estimate for last contract.