The Colorado DOT wanted to reduce the number of spans for this bridge while
maintaining a shallow superstructure to preclude changes in grade. They
determined that high-strength, precast adjacent box girders would provide the
best solution for their needs.
A combination of concrete with a compressive strength of 10,000 psi and 0.6 in.
diameter prestressing strands was used. The two spans are 112 ft and 97 ft in
length and the depth of the superstructure is 36 in.
For additional information on this bridge, please see:
Leonard, Mark A., "I-25 Over Yale Avenue -- The Thin Solution," HPC Bridge
Views, No. 3, May-June, 1999, p. 2.
The Silica Fume Association
38860 Sierra Lane, Lovettsville, VA 20180
Tel: 540.257.4224 Fax: 540.822.9456
