Antlers Bridge Replacement on I-5. Shasta County, California

Services Provided by FINLEY:

  • Design and Construction Engineering
  • Construction Analysis and Erection Manual
  • Post-Tensioning Calculations
  • Bridge Geometry and Construction Elevations
  • Construction and Geometry Control Manuals
  • Preparation of Integrated Shop Drawings
  • Design and Detailing of Temporary Works
  • Design Office Support During Construction
 

Owner:

California Department of Transportation
 

Client:

Tutor-Saliba Corporation
 

Construction Photos, Renderings:

Provided by Caltrans
 

Project Website:

http://www.dot.ca.gov/dist2/projects/antlers.htm
 

Ground Breaking Ceremony, redding.com:

http://www.redding.com/news/2009/nov/06/shasta-lake-man-who-helped-build-antlers-bridge/
 

Webcam:

http://www.earthcam.com/client/caltrans/antlersbridge/index2.php
 

Cost:

$125M
 

Start date:

August 2009
 

Estimated completion:

2014
 

Specifications & Details

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

The California Department of Transportation (Caltrans) in conjunction with the Federal Highway Administration (FHWA) approved a $125 million dollar contract to replace the Antlers Bridge on Interstate 5 in Shasta County.

The new cast-in-place prestressed segmental box girder superstructure consists of 5 spans, 1,942’ (592m) long and 104’ (31.8m) wide. This challenging structure will be constructed on a new parallel alignment over a lake which involves seasonal water level fluctuations of approximately 50’-70’.

The project is located in a high seismic area and incorporates complex earthquake resistant design details. In addition, a 0.4 mile long section of highway south of the bridge will be realigned to improve roadway safety; the existing 1330’ long concrete decked steel truss structure will be demolished and removed. 

FINLEY  is providing segmental bridge design and construction engineering (3D time dependent longitudinal superstructure analysis) to include: camber analysis, geometry control manuals, providing FINLEYcip Geometry Control Software, post-tensioning calculations, temporary support falsework structures, construction manual, integrated segment shop drawings and design office support during construction.

 
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