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City of Houston Main Street Reconstruction

The partial removal of an existing railroad tunnel and subsequent raising of pavement on North Main allowed pavement on Burnett Street to be lowered, meeting the revised elevation of North Main Street. This feat allowed traffic to proceed through the revised alignment and mass transit to proceed to the METRO Park & Ride without taking a circuitous route via a u-turn, saving transit time and improving operational efficiency of METRO transit system.

Avoiding damage to and stabilizing the section of tunnel that would remain was a chief concern, as no record drawings existed to assist in formulating the construction phase. During construction, it was discovered the tunnel walls were made of stair-stepped massive non-reinforced concrete with a seven foot wide base narrowing to a thickness of two feet near the tunnel ceiling. The walls were topped with a three foot thick concrete slab reinforced with two foot I-beams separated by 12″. Conventional concrete saw-cutting and jackhammering methods were not an option for the demolition phase of the tunnel improvement project. Instead, a high speed diamond wire cable saw used for marble mining was employed to cut the tunnel structure. This method resulted in a clean tunnel cut with limited vibration. To read the entire article, please click here.

Cottage Grove Low Impact Development

The Cottage Grove Low Impact Development project, for the City of Houston (COH), has set the standard for urban redevelopment and the viability of incorporating Low Impact Development (LID) practices into future city projects. Jones|Carter (JC) evaluated various LID features related to roadway design in the redevelopment of Houston’s Cottage Grove subdivision as necessitated by polluted waters. We investigated solutions for utility conflict resolution, hydraulic evaluation of the drainage system to meet COH standards, evaluation of variances between LID and COH standards, and long and short term operation and maintenance of the proposed features. As a result of this work, JC helped COH complete its first LID roadway project constructed completely in the right-of-way. To read the entire article, please click here.

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