TYNGSBOROUGH- CULVERT REPLACEMENT ON WESTFORD ROAD

The project proposes to replace the heavily deteriorated corrugated metal pipe culvert carrying Westford Road over Bridge Meadow Brook. It is anticipated that the proposed structure will be a 3-sided precast concrete culvert supported on spread footings with adjacent concrete wingwalls at all four corners. There are two subsurface gas lines and a subsurface water main that pass above the existing structure; it is expected that all of these utilities will need to be permanently relocated as part of this project. There will be upgrades to the bridge railing and approach traffic safety features as part of the project in order to bring them up to current standards. The project limits include the existing culvert carrying Westford Road over Bridge Meadow Brook and its approaches, totaling approximately 150 feet. The project includes reconstruction of Westford Road to provide 11' lanes and 1' shoulders, new guardrail, and new drainage structures. There are no existing pedestrian accommodations in or adjacent to the project limits. The project will provide accommodations for future sidewalk construction on the north side of the road by installing guardrail 5' minimum from the edge of road and constructing granite curbing and gravel base for potential future sidewalk.