To

Mayor and Council

Subject

Riverwalk Damage

Initiator

David Arrington, Deputy City Manager

Recommendation

Authorize the City Manager to enter into an agreement with Uptown Columbus, \n \n Inc. to perform stabilization of the river bank and repairs to the Riverwalk \n \n north of City Mills and to perform necessary repairs the boat landing behind \n \n the Trade Center

Approval

Pending

Background

On Wednesday March 20, 2013 it was reported a section of the Riverwalk had

collapsed north of City Mills. An inspection of the area revealed an area of

approximately 900 feet in length had been impacted by movement of the river

bank. Approximately 300 feet of the Riverwalk received major damage making it

impassable and dangerous to the public. The Riverwalk has been closed from the

23rd St. Pavilion to City Mills. The damaged area is located immediately

behind Chase Homes. Public Works has installed fencing in the area to keep the

public from the hazardous area.

Analysis

City staff met with Jacobs Engineering, our engineering consultant and

representatives from Scott Bridge on site to assess the damage and develop a

strategy to move forward. Scott Bridge is the contractor working for Uptown,

Inc. on the River Restoration project and is currently working below City

Mills. Based on the initial assessment by our Engineering staff and our

consultant, it is our recommendation to move forward immediately with

stabilization of the riverbank and repairs to the Riverwalk using a

design-build approach. It is our recommendation that the City contract with

Uptown, Inc. to have their contractor Scott Bridge work with our consultant

Jacobs Engineering on designing and implementing a riverbank stabilization plan

and repairs to the Riverwalk. Scott Bridge has access material on the City

Mills site that will require disposal and this material could be used for bank

stabilization resulting in a significant savings for the City. The

design-build approach would provide for the most timely stabilization and

repair of the damage, preventing further damage to the Riverwalk and allowing

it to be reopened to the public. At this time, the cost of the stabilization

and repairs can not be estimated since a design has not been completed.

However, Scott Bridge has agreed to contract with Uptown for time and materials

on the project. The City's Project Managers can closely monitor this work and

the expenses associated with the project.



There is another area along the Riverwalk that has sustained significant damage

recently that is in need of repair. The boat landing behind the Trade Center

has a large section of the ramp that has collapsed. The damage represents a

hazard to the public. The boat landing is also the take out point for

Whitewater operations scheduled to begin on Memorial Day. The Uptown

contractor, Scott Bridge will be in the area making ramp improvements within

the next few weeks. It would take 60-90 days for the City to bid the work and

to authorize a contractor to perform the necessary repairs. I would recommend

we add this work to the previously mentioned agreement with Uptown to allow

Scott Bridge to perform the work while they are working on the ramp making

improvements to the take out point.

Financial Considerations

The financial impact of the repairs has yet to be determined. Staff will

provide an engineering estimate to Council as soon as one is available.

Projected Annual Fiscal Impact Statement

No annual fiscal impact is anticipated. Maintenance of the area is already a

budgeted expense.

Legal Considerations

Council must authorize repairs to Riverwalk property.

Recommendations/ Actions

Authorize the City Manager to enter into an agreement with Uptown Columbus,

Inc. to perform stabilization of the river bank and repairs to the Riverwalk

north of City Mills and to perform necessary repairs the boat landing behind

the Trade Center

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