Cars have resumed travel in all four lanes of Interstate-90—the Massachusetts Turnpike--in Boston, after reopening to full capacity on Aug. 5.  

This was considered a major interim milestone for the $110 million Commonwealth Ave. Bridge project, where all of the steel beams have been replaced on the westbound side of the bridge, according to a Massachusetts Dept. of Transportation statement.

In the evening of July 27, I-90 was reduced to one or two lanes of travel in each direction, and was originally scheduled to re-open to full capacity by 5 a.m. on Aug. 6. Off-peak and overnight lane closures will continue to be necessary, according to MassDOT, as crews finish work on the fast-track project.

The project is scheduled to be completed by Aug. 11.