On July 10, 2006 at approximately 11 p.m. four three-ton sections of a concrete drop ceiling inside the I-90 Fort Point Channel tunnel leading to the Ted Williams Tunnel collapsed. A section of ceiling fell on top of a car traveling through the connector tunnel, killing 38-year-old passenger Milena Del Valle and slightly injuring her husband Angel Del Valle, who was driving. The cause of the collapse was later determined to be the failure of adhesives connecting a steel tieback suspending the concrete drop ceiling to the main ceiling above.