Construction Phasing - SR 79: Gila River bridge project

Conceptual construction phasing animation

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

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