Nov. 7 project update: Girders arrive for future off-ramp

Posted on Nov 7 2016 2:01 PM
Large bridge girders began arriving Monday in the work zone near the stadiums. Crews will install the girders this week on the new bridge that will serve as the off-ramp from northbound SR 99 to South Dearborn Street after the tunnel opens to traffic.
 
The bridge will include 14 girders in all. The four largest girders will be installed overnight Tuesday, requiring crews to close the left lane of northbound SR 99 between South Holgate Street and Railroad Way South from 9 p.m. Tuesday to 5 a.m. Wednesday.
 
You can see regularly updated images of the girder installation on our south-end construction cameras.
 
Off-ramp girders
Crews are installing bridge girders near the stadiums as part of the South Dearborn Street Off-ramp Bridge Project. This post explains how this "flexible" bridge will use new technology to stand up to earthquakes. This folio provides a detailed technical description of the materials being used.