Matthew Monahan, a spokesman for the city's Department of Design and Construction, the agency in charge of the project, said that in response to complaints the city recently measured vibrations caused by construction and declared them within the legal limits.
Some businesses said that at least some of the congestion on the streets had been caused by temporary construction projects, and would get better as those projects finished.
Largely a result of the damage caused by Hurricane Katrina, construction projects have not dried up as they have elsewhere, and a few can even be seen in downtown New Orleans.
The program will send an e-mail message each Wednesday about routine or planned weekend service changes caused by maintenance, construction or other projects on subway lines.
The city has been operating under state law that requires developers to alleviate traffic problems caused by their projects, but not before construction.
Higher construction and electrical installation costs may be caused by stricter construction standards to cope with the risks of earthquakes, typhoons or lightning, and land-related regulations, while lengthy approval processes and administrative standards (e.g., environmental assessment) may cause higher planning and project management costs.
That year, the Sierra Club filed a lawsuit that halted construction on the project the next year, due to concerns about damage to the least tern and light-footed clapper rail bird populations caused by the construction of a nearby hotel and the effect that the construction of roads to the hotel would have.
Worse, he said, is the disruption caused by the construction.
Life cycle emissions are principally caused by the construction phase.
Changes causes disruption of performance of construction projects, especially time and cost performance.
Transit officials said that many delays were caused by track work and other construction projects aimed at rebuilding or modernizing the system.
