Hal Tyrrell Trailside Museum

Tripartite retained CTLGroup to assist with the field evaluation of the exterior masonry facade, which was exhibiting distress as a result of differential settlement in addition to incompatible mortar used for previous repointing work. The objective of this project was to design and oversee repairs to restore the exterior masonry facade. In addition to the evaluation, CTLGroup assisted in sample selection, design development, and construction administration.

CTLGroup’s laboratory also provided brick and mortar testing of the historic building, including petrographic and chemical analyses to evaluate the composition and properties of the original mortar. Results of the analysis was used to specify compatible mortar and replacement brick to match the original characteristics of the historic facade.


Buildings & Facilities

Consulting Services

Building Science

Comprehensive Building Assessment

Historic Preservation

Materials Science + Engineering

Structural Engineering + Evaluation

Non-Destructive Evaluation

Repair, Restoration, Retrofit

Structural Condition Assessment

Laboratory Services

Concrete + Cement-Based Materials

Chemical Services


Specialized Testing

The Hal Tyrrell Trailside Museum served as the Forest Preserves of Cook County's first public nature education facility when it was established in 1913.


Year of Completion


Year Museum Established


Year Built

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Project Detail Form

Project Detail Form