CRWD completes regular inspections, maintenance and capital repairs of TBI to ensure the system functions properly. Past and present repair projects include:
2007-2008 – Replacing and repairing two sections of pipe that were in poor condition from cracking and settlement beneath the streets.
2012-2013 – Rerouting a section of TBI to avoid conflicts with I-35E bridge construction, which included abandoning a 630-foot section of pipe and replacing it in a new location.
2017-2018 – Repairing a half-mile stretch of the oldest section of TBI, including repairing a 10×10-foot horseshoe arch, replacing missing mortar, and installing a concrete liner in a 500-foot section of the pipe.
2021-2022 – Repairing cracks, replacing access steps and hatches, and sealing exposed reinforcement in a 2,000-foot section of TBI adjacent to I-35E and the railroad. Work also includes repairing exterior defects and placing soil cover over a short, exposed section of pipe.
Plans for forthcoming years include regular inspections, general preventative maintenance and long-range planning for major reconstruction projects in the future.
CRWD Protects Communities by Repairing Century Old Tunnel, 2021-2022 Repairs