I-84, 11th Avenue Bridge

The demolition of the existing 11th Ave underpass and reconstruction of a new two span bridge with a single pier was a necessary step in the process for widening the I-84 mainline which added an additional lane in each direction on I-84 between Franklin Boulevard and Garrity Boulevard.  Project details included the demolition of the existing aging bridge and construction of a new two lane 2-way bridge, approaches, mse walls, pedestrian sidewalks and bike lane over I-84.   The project included the placement of 1,600 CY of Concrete.   During the closure of 11th Avenue, alternative route detours on both north and sides of the interstate were set in place on Birch Lane to Idaho Center Boulevard and Garrity Boulevard or North Franklin Boulevard.  McAlvain restored two-way traffic to 11th Avenue 30 days in advance.

Capabilities Utilized:

  • General Contracting Services
  • Concrete: 1,600 CY


  • Traffic restored to 11th Avenue 30 days in advance