ConnDOT U.S. Route 1 Operational Lanes
AI provided complete design services for approximately 1 mile of Route 1, a heavily urbanized state highway located in Milford, CT. The design assignment included the widening of the existing four lane roadway to add a 14-foot wide central common turning lane and six foot outside shoulders and sidewalk areas to accommodate the new roadway width. While also providing room for the wider travel way, AI carefully controlled the vertical profile to minimize easements or outright takes from the abutting property owners, many of which utilized the abutting space for storefront parking and automotive dealership lots.
Along the route, Route 1 crosses seven signalized intersections for adjoining roads including an on-ramp onto Interstate 95 and a shopping complex. AI performed the traffic counts/traffic studies for these intersections and designed new signal heads and timings to best control the new traffic through these subject areas. AI also performed the drainage analysis for the new roadway back to pipe outflows that included an analysis of the existing and proposed piping network. Permit preparation was required for DEEP Inland Wetland/Water Course Permit, Water Quality Certification, NEPA Documentation, Public Hearing plan preparation and Public Hearing participation/presentation.
Additionally, application and permit was required from the Department of Health for work required in the reservoir crossed over in the project footprint. The design and permitting of the proposed structure at this location also included extensive hydraulic analysis of the manmade reservoir including headwater and tailwater calculations and the retention analysis of this freshwater body for DEEP Flood Management Certificate. Other miscellaneous tasks included cross section sheet generation, intersection grading plans, MPT sheets for the phased construction sequences, property maps for the unavoidable land acquisitions, and heavy coordination of both underground and aerial utility lines. Easement and right of way map preparation was necessary.
- Traffic signal improvements/controls
- 7 Signalized intersections
- Traffic counts
- Traffic studies
- Design of new signal heads