City of Edmond / Oklahoma County / ODOT

The east-west Covell Road Corridor linking Interstate 35 with State Highway 74 is the result of years of cooperative planning between Oklahoma County and the City of Edmond. Triad was contracted for the design of three project segments connecting these two major Oklahoma corridors.

Conversion of the Burlington Northern Santa Fe Railroad crossing at Broadway and Covell into a high capacity underpass was the element identified as critical to the Covell Corridor. The existing two-lane Covell Road and BNSF Railroad crossing were insufficient for traffic resulting from Edmond's aggressive development and an increasing number of trains serving the NAFTA Corridor.

In order to provide the necessary grade separation between Covell and the BN&SF Railway, the old Boulevard/Broadway Avenue was widened and realigned from Danforth to one-half mile north of Covell Road and the Broadway Avenue/Covell Road intersection was relocated 600 feet to the east. The new intersection and curvilinear roadway opened to traffic in September 2007, earning Triad an ACPA Gold Winner Award for their design. The completion of the Broadway segment allowed construction to proceed in 2008 on the Railroad Underpass, which is expected to open in 2010.

A third contract segment of the Covell Corridor begins just east of Edmond's Santa Fe Avenue and continues east past Mitch Park to Thomas Drive. Covell will be widened to a 4-lane curb and gutter roadway with raised median and multi-use paths on both sides. Triad's design will minimally impact adjacent properties while meeting ODOT and City of Edmond requirements. Included in the scope of work is the reconstruction of five north-south roads crossing Covell. Kelly Avenue, Thomas Drive, Bryant Avenue, Coltrane Road and Sooner Road will be widened from two lanes to four-lane, curb and gutter streets with turn-lanes and signalized intersections.

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