NAMPA Work will begin Monday on two bridges in Nampa that are getting some major improvements.

The two bridges are the aging Union Pacific Railroad (UPRR) E. Lateral Canal Bridge and the Northside Boulevard Overpass with Interstate 84 at Exit 35.

The Idaho Transportation Department says Northside Boulevard will initially be reduced from five lanes to three one in each direction with a center turn lane through the project area. This configuration will remain in place through mid-July.

The bridge decks on the westbound UPRR bridge and the eastbound Northside structure will be replaced, while decks on the eastbound UPRR bridge and westbound Northside will be repaired and sealed. Both bridges were built in 1966.

The deck replacements will use an Accelerated Bridge Construction technique involving full-depth precast concrete deck panels that will be a first for Idaho, said ITD Bridge Engineer Matt Farrar. By doing this, we can reduce the time and impact to the traveling public, and extend the lives of these bridges.

The Northside interchange is ranked 8th in the state in traffic volume, carrying 80,000 vehicles per day.

ITD says the project will take six months to complete and costs $4 million.

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