Iowa State University East Gateway Pedestrian Bridge

Location
Ames, Iowa
Year
2022
Size
24,000 SF

Client
Iowa State University

Project Team
Paul Mankins
Paolo Orlando
Jeff Wagner
Kevin Wagner

Iowa State University East Gateway Pedestrian Bridge – Substance Architecture
Iowa State University East Gateway Pedestrian Bridge – Substance Architecture

Iowa State University East Gateway Pedestrian Bridge

The Iowa State University East Gateway Pedestrian Bridge connects Jack Trice Stadium to parking areas east of the stadium via a quarter-mile-long elevated walkway. It was developed to address a primary concern in the area: the need to reroute foot traffic to avoid busy intersections when fans enter and exit the stadium, while also ensuring wheelchair accessibility and maintaining adequate clearance over University Boulevard. In addition, the client wanted the bridge to be more than a functional necessity and proposed transforming it into a distinctive, welcoming entrance to the Iowa State University campus. A project imperative became blending its utility and aesthetic appeal to resonate with students, fans, and visitors alike. 

Substance Architecture's solution was a pedestrian bridge that serves as both a practical and aesthetic centerpiece. Designed with ADA-compliant ramps connecting to the Jacobson Plaza stadium entry, the bridge prioritizes safe, efficient access for all. Using prefabricated components facilitated a streamlined installation process. Lighting, integrated within the guardrail posts and stainless steel netting, contributes to safety and visual intrigue. Perforated metal panels and illuminated signage bearing the ISU logo celebrate the University’s identity.

Iowa State University East Gateway Pedestrian Bridge – Substance Architecture

Bird's eye sketch of stadium complex and surrounding area

Elevating Design

The original concept for the bridge used elevators for accessibility but these quickly proved to be cost prohibitive. Instead, the design team proposed a gradually sloping walkway that allowed for the necessary clearance over University Boulevard while maintaining ADA accessibility. The elevated walkway structure is comprised of precast double tee beams, while the bridge portion consists of a steel truss with precast flat slabs. The bridge is covered by perforated metal panels and the south view displays the ISU logo sign with illuminated letters. Guardrail posts made of galvanized steel integrate lights for the walkway and support a stainless steel mesh. 

Stair towers providing street-level access are located at each side of the road span. The stairs are defined by vertical precast panels and roof structure, creating an iconic passageway. The Gateway Bridge proves that practical structures can be beautiful. Its presence at the campus entrance not only simplifies pedestrian traffic but also stands as a symbol of innovative and inclusive design.

Integrated Lighting Design

With the primary goals of providing a safe year-round pedestrian crossing, an enhanced fan experience, and a distinguishable gateway, appropriately illuminating the Gateway Bridge was critical. The lighting needed to enhance both safety and ambiance while not detracting from the design of the overall structure or traffic below. The design team collaborated to integrate the light sources into vertical members and route conduit and additional infrastructure through handrails and other structural elements.

Iowa State University East Gateway Pedestrian Bridge – Substance Architecture

Section view - looking north

Streamlined Construction Process

Substance’s design incorporated a system of prefabricated materials which expedited the building process significantly and allowed for a higher level of quality control. Components including precast double tee beams, precast panels, stair assemblies, and steel trusses were crafted off-site and efficiently assembled on-site upon arrival. The foresight in seeing the benefits of prefabrication, and the design and detailing needed for it to occur, showcase the team’s understanding of materials and construction methods.

Iowa State University East Gateway Pedestrian Bridge – Substance Architecture

Setting of bridge trusses during construction

Iowa State University East Gateway Pedestrian Bridge – Substance Architecture

Exploded axonometric diagram

“The pedestrian gateway bridge and elevated walkway will create a spectacular entrance to campus and provide a much safer pathway for fans and students to enter and exit the east side of the stadium,” said ISU Director of Athletics Jamie Pollard. “Additionally, the pedestrian gateway will serve as a catalyst to the creation of the entertainment and cultural district the University is currently exploring.” 

Source: Iowa Board of Regents

Consultants

MEPT Engineer
MODUS Engineering
Structural Engineer
Raker Rhodes Engineering LLC
Civil Engineer
Snyder & Associates, Inc.
Lighting Design
Trivalent Lighting Studio
Steel Fabrication
Johnson Machine Works, Inc.
Precast Concrete Supplier
Wells
General Contractor
Henkel Construction Company

Awards

2023 Masters Award (with Henkel Construction)
Master Builders of Iowa

Photography by Corey Gaffer and Jeff Wagner