Cabrillo Bridge Rehab Study

The historic, 947-ft-long Laurel Street/Cabrillo Bridge, which passes over California Highway 163 in San Diego’s Balboa Park, has the architectural appearance of seven closed-spandrel cast-in-place reinforced concrete arches, and mimics the Spanish-Colonial style. The bridge was completed in 1914 for the Panama-California Exposition in San Diego. Chunks of original concrete or repair materials from beneath the arches had become dislodged and fallen to the ground below. Concerns about safety and potential structural performance problems prompted an investigation to be done in connection with bridge repairs being performed by the contractors, Erreca’s, Inc. and Caltrans.

CTLGroup was engaged to assess the bridge concrete’s quality, condition and future durability potential, in order to help develop repair and maintenance strategies. The firm reviewed bridge drawings and background information; visually reviewed the bridge pier conditions in accessible areas; documented observations with notes, sketches and photographs; hammer-sounded elevations based on observed conditions to identify possible delamination; performed field carbonation tests at selected core locations to evaluate depth of concrete carbonation; and removed core samples for laboratory testing.


Civil Infrastructure


Consulting Services

Historic Preservation

Structural Engineering + Evaluation

Analysis of Extreme Loads: Wind, Earthquake, Blast

Non-Destructive Evaluation

Repair, Restoration, Retrofit

Structural Condition Assessment

Structural Health Monitoring

Validation of Structural Behavior

Vulnerability Assessment & Risk Analysis

Laboratory Services

Microscopy / Petrography

In 1914, the construction cost of the Cabrillo Bridge was $250,000, equivalent to $6,191,612 today.


Project Completion


Year Built

450 FT


Learn more about this project

Project Detail Form

Project Detail Form