What does the ground below the I-4 Maitland Boulevard Sinkhole look like?
The soil profile around the sinkhole is comprised of a surface sand layer that extends to a depth of about 40 feet and is underlain by clay. Limestone (rock) is usually present under the clay at a depth of about 75 feet. However, within the center of the sinkhole the limestone is about 300 feet deep. Above the limestone, the sinkhole is filled with layers of very soft, weak soil as shown on Figure 4. Figure 4.