The company building a pipeline from Canada to Illinois through Iowa says construction for the year is wrapping up right on schedule. Canada-based Alliance Pipeline Corporation is putting the natural gas pipeline through about a dozen northeastern Iowa counties and says 1999 went well.Alliance spokesman Jay Godfrey says the pipeline will enter Iowa east of Mason City and run through 11 counties before crossing the Mississippi River north of Davenport. Godfrey says there’ll be several more important construction tasks to take care of in Iowa next spring.There are 14 compressor stations under construction along the lengthy pipeline, including one near Manchester. The entire project is scheduled to be complete next fall with the main line extending more than 18-hundred miles from northwest Canada to the Chicago area.