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
Construction Photos, Renderings:
Ground Breaking Ceremony, redding.com:
Specifications & Details
ASBI Winter 2012 (134.4 KB)
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.