Grange Insurance Headquarters Parking Garage Pedestrian Bridge
1,000 parking spaces
Located in the historic Brewery District in Columbus, Ohio, the entire project consists of a 10-story addition to the existing 12-story office building, a two-story data center and a new 1,000-space parking garage.
Located prominently on Front Street in downtown Columbus, the new parking garage rises six stories with a partial basement level and provides needed parking for the expanded office building. The structure is cast in place, post tensioned concrete. The design of the garage incorporates brick and glass curtain wall to match the adjacent office buildings. The pedestrian bridge is at the third floor. Total construction cost for the parking garage is $20 million.
Crossing Sycamore Street in the heart of the Brewery District in downtown Columbus, Ohio; a steel framed pedestrian bridge connects the existing Grange Insurance office building with a new, six-story, reinforced concrete parking garage. The new office tower, existing office modifications, parking garage and bridge were all designed by SMBH. The connector facilitates the increased flow of Grange customers and staff across Sycamore Street without interrupting the current traffic pattern below. The bridge, spanning 54 feet across the street, is designed to have a more angular look and features a single central wall intended to be visible from street level. The wall is used to showcase local artwork. Because of the angular look and the visibility requirements, the bridge is framed with a single story-deep truss instead of the more traditional pair of parallel trusses. One of the challenges that SMBH overcame was designing for a single stable truss with cantilevering floor and roof beams, despite a tendency to twist due to the unconventional floor plan. Other challenges were coordinating mechanical and electrical requirements with the need for a low profile and coordinating the bridge foundations with existing street level underground utilities and the existing building’s basement. Total construction cost for the pedestrian bridge is $1 million.