Vibration Propagation Testing on 2nd Street between Folsom and Howard Streets

The Transbay Joint Powers Authority (TJPA), delivering the Downtown Rail Extension (DTX), also known as The Portal, through its subcontractor, Wilson Ihrig, will be conducting vibration propagation testing along 2nd Street (between Folsom and Howard Streets) to obtain important information to inform the DTX design. Wilson Ihrig will uncover an already drilled borehole, install measurement equipment within the hole and impact the ground at grade with a pneumatic hammer within 300 feet of the borehole. Once all work is complete, the borehole will be re-covered.
 
When, Where and What Time?

The work will occur on Sunday, August 4th, 2024, with expected hours
of operations from 8:00 a.m. – 5:00 p.m. on 2nd Street between Folsom and Howard streets.
(Note: Due to unforeseen circumstances, this schedule may be subject to change without notice.)

See PDF for more details on potential impacts and what you can expect.