Several large pits remain visible in the latest drone photos of Gallows Corner as "significant work" continues underground.
The images, captured on June 15, show water pipes in pits near the roundabout and flyover, some submerged in water and others surrounded by building materials.
No construction workers are visible, but a yellow digger remains in the same location as last week.
Transport for London (TfL) says it is working "at pace" to update residents on a timeline for Gallows Corner but has not yet announced a full reopening date.
This follows a traffic order for the partial closure of Southend Arterial Road (A127) until June 30 or until the water works are complete.
When asked if the major junction will reopen at the end of the month, TfL did not confirm, stating it is "working closely" with Essex & Suffolk Water to understand when the road can be reopened.
A TfL spokesperson said: "Work at Gallows Corner is continuing as Essex & Suffolk Water (ESW) progresses essential testing and commissioning of the newly installed water main.
"Significant work is taking place underground to ensure the network is safe and resilient.
"This work is being carried out in phases, allowing each stage to be completed thoroughly and safely, helping to protect vital water supplies and reduce the risk of future disruption.
"We are working closely with ESW to understand when the road can be safely opened, and we are working at pace to update residents on this timeline."
It has been more than month since TfL partially reopened Gallows Corner on May 11 - allowing traffic on Straight Road, Main Road, and the westbound carriageway of the flyover - and almost a year since the full closure began.
The water main replacement work is being carried out Essex & Suffolk Water, and was aimed to run alongside TfL's replacement of the flyover to "minimise disruption" to residents.
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