Bridge work on Interstate 66 at Delaplane, exit 23, began this morning (May 13). This work to repair and resurface the bridge decks over Route 731 (Cobbler Mountain Road) will require multi-day closures beyond the usual allowable work hours, the Virginia Department of Transportation reports. The closures are necessary due to the extensive repairs to the bridge deck and the time required for the new surface to cure.
The project involves patching the bridges in both directions and applying a latex overlay to extend service life. Martins Construction Corp. of Falls Church is doing a hydro demolition of the bridge decks and apply a high-strength concrete overlay. Hydro demolition involves using high-pressure water jets to remove deteriorated concrete to create a better bonding surface for the new concrete.
The hydro demolition and deck rehabilitation process requires the extended single-lane closures on Interstate 66. One lane will be closed for about five days to allow the contractor to remove the deteriorated concrete, pour the new concrete and let the overlay cure. To reduce delays, VDOT will implement a zipper merge pattern at the work zone. Drivers should stay in their current travel lane up to the merge point and take turns merging — similar to a zipper — into the open lane.
Weather permitting, the following lane closures are scheduled to complete the overlay and allow time for it cure:
- 10 p.m., May 12 through 3 a.m., May 16: eastbound right lane closed
- 10 p.m., May 19 through 3 a.m., May 23: eastbound left lane closed
- 8 p.m., May 20 through 8 a.m., May 23: westbound right lane closed
- 10 p.m., June 2 through 8 a.m., June 6: westbound left lane closed
Intermittent lane closures controlled by flagging are also possible on Route 731 during this work.
Drivers should expect delays especially during peak travel periods.