Overview
Estimated Construction Duration:
- 3 to 3 1/2 years
Estimated Project Cost (in 2013 Dollars):
- $230-$255 million (includes construction, design, right of way, etc.)
All Alternatives will include:
- Four lanes of traffic with 2 northbound and 2 southbound lanes
- A 12-foot wide pedestrian/bicycle trail that is separated by a barrier
- A river navigation channel opening that meets U.S. Coast Guard requirements
- An anti-icing system that treats the bridge’s driving surface during inclement weather to prevent the build up of ice. A small building will need to be located in the project area
- A local ring road on the north side of the river that connects the east and west sides of Hwy 61. This road provides a safer access to the local road serving mainly Hub’s Landing & Marina and Captain’s Bay Marina by eliminating left-turning vehicles and closing the existing median opening. Access to both northbound and southbound Hwy 61 will be maintained.
- A construction staging area will be needed for all bridge alternatives. It will be located on Lock & Dam Road near Lock and Dam #2.
Quick Links
- Finding of No Significant Impact
- Negative Declaration Order
- Events and Open Houses - Public Record
- Press Releases
- Construction Phases
- Scoping Study (PDF)-Final Report
- Environmental Assessment (EA)
- Findings of Fact and Conclusions
- Information for Potential Contractors
More Links
Tied Arch Bridge Alternative (Single Bridge)
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This alternative involves construction of one new arch bridge upstream of the existing bridge followed by demolition of the existing bridge. A tied arch is considered more feasible than a partial-through arch bridge. The roadway curve at the south end of the bridge makes construction of a partial-through arch difficult.
Characteristics of this alternative include:
- A roadway height that is similar to the existing roadway.
- The overall shape and size of the arch bridge structure is similar to the existing bridge.
- The pedestrian and bicycle trail would remain on the downstream side of the river crossing.
- Construction of the arch could be done at an off-site location and then “floated in” on the river and lifted into place on top of new piers. This is an opportunity to limit the effects of construction on vehicle and river traffic.
- This is a common bridge type in the Upper Mississippi River.