IDOT I-90 Hot Tap

September 10, 2019

IDOT I-90 Hot Tap TDW Services retained GRAEF to provide Resident Engineer and quality control services for the hot tapping of a 30-year-old, 90-inch water main owned and operated by the Northwest Suburban Municipal Joint Action Water Agency on behalf of the Illinois Tollway. This project allowed for the widening of I-90 through the western…

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Bridges Over USH 41 and USH 45, Washington County

August 27, 2019

Bridges Over USH 41 and USH 45, Washington County Construction inspection was completed for 0.8 miles of STH 145 with five roundabouts, and the deck replacement and widening of two bridges over USH 41 and 45. Major items of work included grading, curb and gutter, concrete paving, storm sewer, lighting, marking and signing. Other Projects…

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