Center St. Bridge Expansion

1
Center St. Bridge Expansion

• Anthony Podegracz, P.E.
• Kimley-Horn and Associates

2
Center St. Bridge Expansion

• Cantilevered Bikeway/Walkway Phase I of Piru
  Rail/Trail Project
• Owner Ventura County Transportation Commission
• Project Manager Ventura County Public Works
  Agency
• Design Consultant Kimley-Horn and Associates,
  Inc
• Contractor Mendez Concrete
• Construction Contract Award 1,696,582
• Final Construction Cost 1,696,192

3
Center St. Bridge Expansion

• Center St. Bridge
• Rural Community link over Piru Creek
• 409 Existing Cast-in-place Box Girder with
  Superelevated Curve
• Two lane bridge with 4 Shoulders

4
Center St. Bridge Expansion

• Project Constraints
• Environmental
• Sensitive Creekbed
• Swallow Nesting
• Structural
• Minimum Alterations to Bridge
• New Deck must be able to Support Vehicles
• Restricted Access
• 24 Circular Holes in Bottom of Bridge
• No Equipment allowed in Creekbed

5
Center St. Bridge Expansion

• Cantilevered Walkway
• Separate Bikes and Peds from Roadway
• 10 Wide Exodermic Deck System attached to
  Existing Cast-in-place Box Girder
• Lightweight System
• No Structural Modification required on existing
  Bridge
• Post-tensioned

6
Center St. Bridge Expansion

• Approach Wall
• Hollow Box Wall
• Poured-in-place Retaining Wall System attached to
  Existing Retaining Wall
• Minor Modifications to Existing Roadway
• All work completed within existing County
  Right-of-way

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Center St. Bridge Expansion

• Construction Methods
• No Creekbed Access
• Work done from Above
• Contractor Basket
• Work within Existing Bridge
• Access Holes in Bottom of Existing Bridge
• Additional Temporary Holes Added to Top of Bridge
  Due to High Water Level

8
Center St. Bridge Expansion

• Construction Process
• Web Plates Attached

9
Center St. Bridge Expansion

• Construction Process
• Post-Tension Bars Attached and Tensioned

10
Center St. Bridge Expansion

• Construction Process
• Falsework and Deck System Placed

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Center St. Bridge Expansion

• Construction Process
• Deck Poured

12
Center St. Bridge Expansion

• Construction Process
• Approaches Completed and Railing Attached

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Center St. Bridge Expansion

• Started February 2005
• Completed October 2005