DUAL HUB CORRIDOR 6/21/89 (89-38) Endorsed the Dual Hub Corridor plan alternative, "10A", for a Euclid subway in the downtown segment, Euclid-at-grade in the Mid-Corridor segment, and Euclid-at-grade in the University Circle segment, also recommended that the station serving CSU be located between E. 18 St. and E. 22 St.