The project, which has been underway since 2013, already had its completion date pushed back due to unforeseen issues with acquiring rights-of-way. With the retaining wall collapse, the expected completion date is now set for 2028.
Once written, the draft report will go through a legal review.
Transportation Commissioner Diane Gutierrez-Scaccetti said the area where the collapse occurred was “a fairly wet area anyway” but added there was an “extraordinary amount of water” at the time of collapse.
“With the addition of the significant rains that occurred in and around the time of the collapse, and the water table that was already there, it caused [the wall] to shift,” she said, adding the department is in a “good position” to rebuild the wall so it would not be affected by future heavy rains.
Even though the investigation is in the final stages, there is enough information to begin designing a new wall, which is currently underway.