Cheyenne Marginal (Randall Interchange), Wyoming
This Wyoming Department of Transportation project rehabilitated the Randall Avenue Interchange at Interstate 25 in Cheyenne, Wyoming. Sema Construction, Inc. was the Prime Contractor, with IHC performing the concrete paving. IHC’s scope of work included paving 1.107 miles of I-25, 2 ramps from I-25 to Randall Avenue and Randall Avenue from the I-25 Intersection to Warren Air Force Base Gate I.
The project was designed to be completed in 2 years, but the major firms involved worked to finalize a rephased schedule of 1 year. The shortened schedule called for a change in the base course from Grading W to recycled concrete. The existing roadway and underlying road base was removed, crushed to specification, and reused for the new surfacing base course. Use of the recycled base also lessened the need for new, imported materials, and greatly reduced the trucking and fuel requirements. The revised schedule also changed reconstruction of one ramp from asphalt to concrete. In order to achieve the proper joint layout, some of the ramps pours utilized three different pavers for four different widths.
By changing the schedule, the team truly provided innumerable benefits, not the least being one less year of construction-caused inconvenience to the traveling public and those wishing access to Warren Air Force Base.