Case Studies: Problem Folds

March 26, 2007

What happens when the highway washes away? You fix it. That is precisely what happened three years after Lummoxville Road in Haverhill, N.H., washed away. A number of decisions had to be made in order to obtain funding and FEMA’s support.

What happens when the highway washes away? You fix it. That is precisely what happened three years after Lummoxville Road in Haverhill, N.H., washed away. A number of decisions had to be made in order to obtain funding and FEMA’s support.

The key factor in reconstructing Lummoxville Road was choosing a solution to retain the soil above and below the road. Several options were on the table, the most prominent of which was a poured-in-place wall or a segmental retaining wall (SRW). Due to substantial cost savings, an SRW was chosen. Now the decision left to make was which SRW system to use.

Redi-Rock’s Big Block retaining wall system was chosen for the Lummoxville Road project for a number of reasons. The most important of which was the fact that Redi-Rock’s system required the least amount of reinforcement and excavation due to the massive strength of its colossal 2,500-lb blocks. The result was significant labor and cost savings.

Morrill Construction in North Haverhill, N.H., was awarded the contract to reconstruct the road and Redi-Rock Walls of New England supplied Morrill Construction with Redi-Rock products. Morrill Construction built the retaining walls in around three weeks, and the entire project was completed in approximately two months.

The end result was a usable road that is both aesthetically pleasing and extremely functional.

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