As new design and engineering plans take shape for the state-funded reconstruction project on Beach Road, town officials bristled this week at the prospect of added costs and a delayed construction timetable.

At a meeting of the select board Tuesday, town administrator Jay Grande expounded on the issues while sharing updates from the town’s bi-weekly meeting with the state earlier that day.

“The fact that the wastewater is still a question in MassDOT’s mind as to who’s paying for it is a big concern,” Mr. Grande said.

The $6 million project to reconstruct a half-mile spit of road between Five Corners and Wind’s Up, including a renovation of the aging subsurface infrastructure, hit snags in February when utility work revealed unforeseen conflicts with the engineering plans and existing infrastructure.

The issues have forced the state to rework design plans. The town has also hired the consulting firm Environmental Partners to monitor the project.

On Tuesday Mr. Grande said the state had recently proposed a bypass of the municipal water line, which would eliminate a number of the previous utility conflicts. But now conflicts with the proposed drainage design and the town’s existing sewer main are kicking up new issues with the project.

Some of the concern centers on materials used in the town wastewater installation, according to Mr. Grande.

But who will pay for any needed adjustments is a growing point of contention.

“At this point, they have not made any commitment to fund the revisions to the wastewater line and I’m very concerned about that position, as you can imagine,” Mr. Grande told the selectmen Tuesday. “If not for this construction project, we wouldn’t be making these changes.”

Specific costs also are not yet clear.

“The total cost of revisions are not known at this time but we anticipate that the cost will increase due to the additional relocation of water main,” said Judith Riley, a spokesman for the Massachusetts Department of Transportation, in an email to the Gazette last week.

Mr. Grande said Tuesday the proposed changes to the sewer line could cost $1 or $2 million.

He also reported that construction, due to begin this month, has been delayed until April.

In a letter to MassHighway last week, town counsel Dave Doneski echoed the town concerns and urged a speedy resolution to the problems.

“There are no less than four engineering firms that have weighed in on this project,” Mr. Grande said, speaking about correspondences.

Selectmen voiced their continued dismay at the hiccups. “All I can say is in my personal opinion, someone at DOT didn’t do their homework,” chairman Jim Rogers said.

Meanwhile, at the recommendation of their consultant, Mr. Grande said the town has requested certain road improvements and project additions of their own, including a drainage outfall pipe to the harbor and the replacement of subsurface tanks at the Citgo gas station.

A more recent suggestion from another of the town’s consulting engineers, Applied Coastal, proposed elevating a portion of the road near Five Corners to improve coastal resiliency and minimize flooding in the area.

Selectmen voted unanimously to send a letter to the state advocating for the elevation to be added to the project before construction breaks ground.

Mr. Grande expressed frustration at the new snags and cost inflations, but said he hoped the town concerns would be heard.

“I’m hopeful that the new information on the wastewater line issues will persuade them that they need to be funding the changes,” he said.

In other business Tuesday, selectmen approved the first phase of a three-part renovation project at Owen Park. The project aims to improve ADA access to the park and add new landscaping.

The first-phase work is expected to be completed by Memorial Day.

Selectmen also voted to approve a partnership between the Vineyard Haven cultural district and the business district, which will grow into an umbrella organization called Visit Vineyard Haven.