Construction of Route 102 bridge spanning I-93 in Derry to be completed by end of June
By CHRIS GAROFOLO
Union Leader Correspondent
February 28. 2018 11:35PM
An aerial view of the construction work to the Route 102 bridge over Interstate 93 in Londonderry. This photo was taken Nov. 28, 2017. The work is slated for completion on June 29. (New Hampshire Department of Transportation)
(CHRIS GAROFOLO/UNION LEADER)
Vehicles pass underneath the Route 102 bridge in Londonderry on Wednesday morning. The new bridge, under construction as part of the larger infrastructure improvements to local roads and Interstate 93, should have traffic relocated by late June.
LONDONDERRY — The new Route 102 bridge spanning I-93 is on track to be completed by the end of June, according to the state.
The replacement of the bridge is a priority for the New Hampshire Department of Transportation, said Matt Lampron, its on-site contract administrator, because it involves removal of an existing structure.
“We can’t start the removal of (the current bridge) until the new one is up and running, so that definitely gets advanced,” he said. “We’re hoping to see the completion of the 102 work this summer.”
The bridge to be removed in the months ahead was built in 1962 and is one of 16 on the state’s red list. The bridge deck is in poor condition, and last August a large chunk of concrete fell from the structure to smash on the busy interstate below.
There were no injuries in that mishap, but crews erected a temporary protective shield to prevent more debris from falling.
Construction of the replacement bridge will resume this spring. Crews in January finished setting steel for the new span near the Londonderry-Derry border. Within the next two years and once other roadwork is complete, the bridge is expected to serve three lanes of traffic in both directions.
That other work includes reconstructing 1,600 to 2,000 feet of Route 102 at either end of the bridge once it is built.
“Some of those can’t begin until traffic has switched to the new bridge,” Lampron said.
The project is now projected to cost about $67 million, up about $5 million from just last fall.
Bow-based RS Audley, Inc., the general contractor, has set Sept. 25, 2020, as the overall completion date of the work.
Also included in the project are reconstruction of the Pillsbury Road-Ash Street bridge, the Kendall Pond Road northbound bridge and the Beaver Brook northbound bridge. These projects have an Oct. 26 intermediate completion date
“The push is going to be to get the four bridges completed. Once the four bridges are completed then they can start working on the rest of the northbound construction,” said Lampron. “We’re on track to complete those bridges in those timeframes.”