- Route 291 Missouri River Bridges
The new 1,900-foot Route 291 bridge over the Missouri River carries southbound traffic. The existing bridge was revitalized to provide northbound traffic lanes.
Staged construction accommodated funding availability to complete the pair of projects. Balanced cantilever erection of the truss was developed to eliminate temporary erection bents in the navigation span.
The existing structure project included rehabilitation of the original truss and deck girder system members and replacement of the driving surface.
- Design for new structure
- Rehabilitation design for existing structure
- Detailed scour and barge impact studies
- Navigation lighting remodel on existing bridge
- Shop drawing review
- Two-span continuous truss
- 460-foot river/navigation spans
- Drilled shaft foundations for river piers
- Bulb-tee concrete girder approach spans
- 1,900-foot structure
- Aesthetic features to match existing piers
- 30-inch waterline on structure