Preliminary results will not be forthcoming from the Summer Street Road redesign, with officials blaming construction delays for their decision to collapse the promised reports into a single conclusive release at the end of the study.

The Boston Transportation Department (BTD) confirmed on April 23 that it will not be releasing the midpoint report it had initially planned on how the Summer Street redesign pilot is affecting traffic.

The start of the study was delayed months by material shortages and supply chain issues, finally beginning in December instead of the original completion date in late September. That has in turn pushed the end date of the half-year study to June 2024.

Officials were still confident of their timeline despite the adjustment, but declined to say much more than that the study would finish in June and they’d have numbers then.

“The pilot had a late start due to some supply issues in construction. We expect to have data available in June when the pilot is complete,” read the entirety of the BTD’s statement on the study.

The BTD did put out an update in late March, though not the promised preliminary results. It instead outlined the pilot’s many outreach methods including meetings with the Seaport Civic Association, focus groups, open houses, online surveys, mailers to addresses adjacent to the changes and flyers at bus stops.

The pilot program adds a dedicated bus lane that trucks and tractor trailers can share, in a nod to local commercial interests.

Without the normal shared bus lane, cyclists instead get a protected bike lane to themselves. The changes extend through the entire Seaport, ending near East First Street in South Boston.

Planners project the dedicated lane will save buses up to five minutes and make access easier for emergency vehicles, but drivers are already decrying the effect it’s having on their commute.

The pilot came under fire during an online meeting about similar changes proposed for South Boston, which have now been put on hold according to the Contrarian Boston.

New holdups around the Boston Convention and Exhibition Center as well as the Omni Hotel prompted State Senator Nick Collins to bring up the Summer Street pilot, saying that “congestion caused there by this pilot has obviously been impacting the environment and Summer Street.”

Officials have also been reluctant to state just what thresholds have been set to declare the pilot a success or failure once they’re done collecting data. The BTD has declined to specify its goals when asked, though a public document online says planners will be measuring bus ridership, bus travel time, car volume, truck volume and travel time for all vehicles.