Interstate 44 / Interstate 270 to Mraz Interchange – St. Louis County, MO

    Missouri Department of Transportation (MoDOT)

    EDSI was a subconsultant for this expedited MoDOT project. EDSI’s responsibilities for the project included the design of a ramp bridge which carries traffic traveling from Interstate 270 southbound to Interstate 44 westbound. The bridge is a single span prestressed concrete NU-girder bridge with integral end bents. EDSI was responsible for the Design Layout Drawings and the Final Plans, Special Provisions, Quantities, and Cost Estimate.

    Replacement of Route 79 Bridges over Ramsey and Fox Creeks – Pike County, MO

    Missouri Department of Transportation (MoDOT)

    The project comprised the design of two bridge replacements – a prestressed concrete girder bridge with encased pile intermediate bents (Ramsey Creek) and a reinforced concrete slab span with pile-supported intermediate bents (Fox Creek), both with integral end bents. EDSI was a subconsultant for this project. Bridge tasks completed by EDSI included independent calculation of bridge quantities and preparation of bills of reinforcing steel and reconciliation of compiled quantities and reinforcing bar bills with those completed by the prime consultant. EDSI also provided engineering and technical services in the preparation of roadway plan sheets for Route 79 bridge over Fox Creek near Clarksville, which included preliminary plans, right-of- way plans, and final design plans.

    Route 141 & Interstate 44 Design-Build –
    St. Louis County, MO

    Missouri Department of Transportation (MoDOT)

    This Design-Build Project was undertaken to improve the mobility of the Interstate 44 interchange at Missouri Route 141 and along Route 141 north of the interchange. The project included two new bridge structures within the interchange, improvements to ramp configurations, addition of roundabouts, relocation of a Park-n-Ride lot, and improved turning movements (ThrU Turns) at intersections along Route 141 north of the interchange. The new bridge structures consist of a fly-over ramp bridge which carries vehicles from southbound Route 141 to eastbound Interstate 44 and a C-D road bridge over Route 141. The flyover bridge is a 12-span chorded precast prestressed concrete girder structure, partially within a tightly curved horizontal alignment. As a subconsultant, EDSI’s responsibilities for this Design-Build project included surveying (elevation checks, bridge clearance checks, verification of provided surveys), right-of-way acquisition documents, signal redesign (3 intersections, including temporary), and Traffic Control Plans for project limits south of the Meramec River.

    This project received an ACEC Missouri 2019 Engineering Excellence Competition Grand Award.

    Forest Park Liberal Arts Bridge – St. Louis, MO

    City of St. Louis, Board of Public Service

    EDSI was a subconsultant for this project which included replacement of the Liberal Arts Bridge, enhancement of the Muny Tributary, and improvements to Government Drive in Forest Park. EDSI’s responsibilities included leading the bridge design, surveys, design of ADA accessibility, and preliminary traffic control plans.

    Third Street Viaduct on Interstates 44/55 –
    St. Louis, MO

    Missouri Department of Transportation (MoDOT)

    This project consisted of the structural rehabilitation of five structures carrying Interstates 44/55 over Third Street in the City of St. Louis. As a subconsultant, EDSI’s portion of the work included plan preparation for structural rehabilitation and repair of two structures. Structural repairs included full depth concrete repair, barrier curb repair/replacement, bearing and strip seal replacement, epoxy sealing bent columns, formed substructure repair, and approach slab replacement.