Invesco Field at Mile High

Home to the Denver Broncos

Project Summary

This 76,000 seat Stadium consists of 12,000 tons of Structural Steel which resulted in over 3,000 shop detail fabrication drawings being produced. Set out on a unique geometry, the design / build Stadium is a three tiered arena consisting of Lower, Middle and Upper Bowls of steel framing with thick bent steel plate seating risers. The Stadium is serviced by four pedestrian ramps located at each corner to deal with the volume of patrons entering and leaving the complex.

As described by Modern Steel Construction / October 2000 edition, the grid system is best defined as a double symmetric, 48 sided polygon based on broad-radius arcs at the sidelines and end zones with tighter arcs through the corners. The continually curving seating rows created by the grid system will provide better sight lines and field proximity for stadium patrons as well as the appearance of a smoothly curved seating bowl. The upper bowls consists of raker frames which vary in height forming a wave effect, one of the signature items of the stadium.

These frames are quite unique in themselves, as they are wide flange built up sections consisting of a straight taper along the lower length and a curved taper at the upper end. The built up sections are supported by HSS 24” columns leaning towards and away from the field forming a bracing effect.