TERRA Engineering provided design and construction administration services for the Tri-State Tollway Landscape Improvements Project for the Illinois State Toll Highway Authority (ISTHA). TERRA’s design augmented the existing landscape areas and provides new landscape in conjunction with the ISTHA’s Congestion Relief Plan, which included widening and reconstructing portions of the Tri-State Tollway.
Terra also provided construction administration services including on-site observation and inspections, review of layout and design changes, preparation of project records, submission of pay estimates and change orders, and coordination with the contractor and ISTHA to see that work was being performed in accordance with the contract documents.


Terra was the prime for this job.