Hinsdale bridge

CONSTRUCTION ACTIVITIES: A 12” gate valve for the water main is being installed to allow tying the new water line built for the project into the existing line without having to shut off the water to 28 Vernon Street.

Backfill material, membrane, filter fabric and underdrain are being placed for the southern Mechanically Stabilized Earth (MSE) wall. This operation will continue into next week along with the placement of drainage structures and embankment material in the road corridor.

Due to heavy rains overnight Monday and into Tuesday, regular operations this week were interrupted with some emergency repair work on drainage at the Royal Road and VT 142 intersection and adjacent railroad tracks. Permanent repairs to the intersection, existing drainage, and the tracks have been made and with the final clean up of some environmental impacts along the river, this issue will be fully addressed.

DETOUR INFORMATION: The truck detour route from VT 142 will be up Cotton Mill Hill Road, left onto South Main Street, continuing onto Fairground Road, and finally back Canal Street. Cars detouring from VT 142 should proceed up Cotton Mill Hill Rd. and make a right hand turn onto South Main St. A turnaround has been constructed south of Cotton Mill Hill Rd. on VT 142 to allow vehicles to safely navigate this corridor. A three-way stop configuration has been implemented at the Cotton Mill Hill Rd. and VT 142 intersection.

The contractor will continue to work on installing new drainage systems as well as removing existing pipes and structures. Backfill of this work has begun on the southern end of VT 142 and progresses north. This fill placement is the beginning of the embankment work needed to raise the road to meet the new bridge alignment. Work on the southern MSE wall continues this week with panel placement and related backfill. Abutment A’s backwall is still in the process of being formed up with rebar being placed.

The contractor will finish removing pavement and concrete roadway this week and will continue to work on installing new drainage systems as well as removing existing pipes and structures. Backfill of this work will begin on the southern end of VT 142 and progress north. Work on the southern MSE wall continues this week with panel placement and related backfill.

DETOUR INFORMATION: The truck detour route from VT 142 will be up Cotton Mill Hill Road, left onto South Main Street, continuing onto Fairground Road, and finally back to Canal Street. Cars detouring from VT 142 should proceed up Cotton Mill Hill Rd. and make a right hand turn onto South Main St. A turnaround has been constructed just south of Cotton Mill Hill Rd. on VT 142 to allow vehicles with significant turning radius from the north to approach Cotton Mill Hill Rd. from the south. A three-way stop configuration will also be implemented at the Cotton Mill Hill Rd. and VT 142 intersection. Motorists are advised to watch for trucks turning and reduce speed in this area.

The 90 day closure of Vermont Route 142 has begun as of today, May, 30th, 2023 and is anticipated to be completed August 28, 2023. During the closure the contractor will be working on bringing the road grade up to meet the new alignment and tie-in for the Vermont/New Hampshire Route 119 bridge over the Connecticut River.

The location of the closure is approximately 1000 feet south of the current intersection of VT 142 and VT/NH 119. Access to both Royal Road from the southern approach and to 28 Vernon Street from the north will be maintained and flaggers will be present to assist local motorists with access to these locations as needed.

ONSTRUCTION ACTIVITIES: Drainage work has begun across from Royal Road near to the Connecticut River. The northern MSE wall work continues with the placement of panels and panel straps and the southern MSE wall may begin as early as next week with related excavation and forming of the leveling pad. The gravel wetland construction continues and is awaiting the installation of a drainage structure in order to bring this work to completion.

Installation of panels and panel straps for the northern MSE wall will continue next week. Excavation for the gravel wetland south of the bridge abutment is ongoing along with the installation of drainage structures. The last of the cofferdam sheets that were used for the gravel wetland have been removed. Form work has begun at Abutment A (the Vermont abutment) for the backwall and will continue into next week with a concrete placement tentative for the end of the week.

Pile driving operations are complete at Pier 2 as of last week. However, additional work on the temporary trestle access over the CT River will need to be completed to facilitate construction equipment and the intermittent pounding of diesel hammers will continue as a part of this operation into next week. Pier 1 piles remain to be driven later this season.

The contractor has finished the leveling pad installation for the northern MSE wall and will begin to set panels and the panel straps. The covered retaining wall on the west side of VT 142 will be maintained as necessary until the location can be backfilled during the summer closure period. Excavation for the gravel wetland is ongoing and coinciding installation of drainage structures has begun.

Pile driving operations are anticipated to be finished at Pier 2 by the end of this week. Pier 1 piles will be driven later this season. Additional work on the temporary trestle access over the CT River will need to be completed to facilitate construction equipment and the intermittent pounding of diesel hammers will continue as a part of this operation.

The contractor has finished the tree clearing operation. Covering the existing retaining wall on the west side of VT 142 is ongoing.

On the east side of VT 142, the north MSE wall near Abutment 1 work has begun and will continue next week. In addition, work is scheduled to begin on the gravel wetland located just to the south of Abutment 1 on Monday.

As noted before, pile driving operations will continue at Pier locations 2 and 1 and intermittent pounding of diesel pile hammers is anticipated through the Summer of 2023 with Saturday work anticipated from 7 AM – 7 PM.

The contractor has begun working on environmental protections and controls on the west side of VT 142, preparing the retaining wall to be covered. They anticipate tree clearing operations to begin tomorrow. Tree removal will result in brief periods of full closure on VT 142 for the safety of the traveling public.

Work continues on the bridge abutment on the Vermont side where the MSE wall construction is scheduled to begin.