Permanent Corridor Dossier: Cosgray Road & Western Connector

Infrastructure monitoring tracking rail corridor crossing pinch-points, the northern connector link to Hayden Run, school feeder traffic, and industrial flex park transitions.

Status: Northern Extension & Rail Crossing Audit
Cosgray Connector & Rail Grid Schematic
Heritage Rail-Trail
Connector / Infill
At-Grade Choke Point
Heritage Rail-Trail / ROW COSGRAY ROAD HAYDEN RUN RD SCIOTO DARBY RD FLEX LOGISTICS Freight Buffer Infill At-Grade Conflict Turn Queue Spill Northern Stacking
Schematic roadway corridor layout; not an official engineering plat or legal boundary survey.
Peak Operational Flow & LOS
Cosgray @ Scioto Darby
LOS E
Peak PM turn queue: 52s
Cosgray @ Hayden Run
LOS C
Modern roundabout flow
Rail-Trail Crossing Friction
LOS D
Peak recreational crossing
Industrial Freight Share
14% Trucks
Heavy axle pavement wear
Corridor Classification & Standards
Thoroughfare Plan Type: Minor Arterial / Collector (Class III)
Average Daily Traffic (ADT): 14,800 vehicles / 24 hrs
Jurisdiction Boundary: City of Hilliard / Norwich Twp
Design Speed vs. Posted: 40 MPH Design / 35 MPH Posted
Enforceable Infill & Capital Commitments
  • Rail-Trail Grade-Separated Crossing Study: Requirement to assess an elevated or protected beacon crossing where the Heritage Rail-Trail intersects Cosgray Road.
  • Industrial Heavy-Duty Pavement Section: Flex industrial developers must bond full-depth asphalt paving (min. 10.5-inch composite) along frontages to handle truck tonnage.
  • Northbound Deceleration Bay Dedication: Mandatory 200-foot right-turn lane dedication at newly approved warehouse and commercial distribution curb cuts.
  • Stormwater Swale Preservation: Preservation of linear drainage swales to protect agricultural and residential runoff balance north toward the Hayden Run sub-basin.
Critical Infrastructure & Rail Choke Points
  • Scioto Darby Southbound Backup: Commuters heading south during peak morning hours face single-lane stacking that extends past the railroad crossing tracks.
  • Heritage Trail Sightline Restrictions: Heavy tree canopy and curvature along the old rail line create blind spots for bicyclists crossing vehicular traffic on Cosgray.
  • Industrial vs. Residential Friction: Commercial freight and delivery trucks routed between Roberts and Hayden Run mix directly with neighborhood school bus stops.
  • Narrow Shoulder Transitions: Sections between municipal corporate boundaries abruptly transition from full curbs to unlit, narrow ditches without paved shoulders.
Data Source: City of Hilliard Capital Improvement Plan (CIP), Franklin County Engineer Thoroughfare Studies, and Heritage Trail Safety Audits.

Cosgray Road Briefs