Project Description

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The Boston Central Artery included many viaducts and ramps, divided into multiple manageable and coordinated construction contracts. The segments were erected using both the balanced cantilever and span by span methods. Jason was the Drafting Team Manager for the viaducts and ramps of the C09C4, C09C2 and C19BA contracts for the construction engineer. The drafting team produced fully integrated shop drawings for all precast segments, in addition to cast-in-place bents and various false-work structures and erection sequencing manuals.

 

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C09C2

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The C09C2 project included I-93/I-90 Interchange Ramps at Albany Street, and consisted of approximately 5,000 ft. of segmental concrete ramp structures integral to the I-90 mainline though Boston.

The project included: 4 ramps (approximately 512 total segments) and precast segments erected using span-by-span method with overhead gantry.

 

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C09C4

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The C09C4 project included the I-93/I-90 Interchange, Southbound Viaducts and Ramps, and consisted of 1,900 ft. of segmental concrete ramp structures integral to the I-90 mainline through Boston.

The project included: 1 ramp of precast segments erected using span-by-span method with overhead gantry (approximately 84 segments) and 2 ramps of precast segments erected using balanced cantilever method (approximately 120 segments).

 

 

C19BA

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The C19BA project included the approach spans to the new Leonard P. Zakim Bunker Hill Memorial Bridge in Boston. This included 11 spans of precast segments erected using span-by-span method with overhead gantry (approximately 200 segments)