Construction Phasing - SR 79: Gila River bridge project

Conceptual construction phasing animation

*Some adjustments to the phasing or design features may be required

Phases

  • Preliminary work
    • Build construction access roads
  • Phase 1: Construct new piers and superstructure next to existing bridge
    • Shift traffic to new bridge
  • Phase 2: Remove existing bridge & finish bridge abutments
    • Shift traffic to the east side. Single lane controlled by stoplight (weekend only for bridge slide)
  • Phase 3: Slide west half of bridge & construct approach roadway
    • Open traffic – 1 lane in each direction
    • Shift traffic to the west side. Single lane controlled by stoplight (weekend only for bridge slide)
  • Phase 4: Slide east half of bridge & construct approach roadway
    • Open traffic – 1 lane in each direction
  • Phase 5: Finish Closure Pour and Approach roadway work
  • Phase 6: Construct pedestrian barrier and remove extra pier cap
    • Remove construction access roads