Government

Time-lapse: Watch Forevergreen Road overpass installation

A tractor trailer moves a concrete girder as two sit in place over I-380 southbound lanes while work continues on the Forevergreen Road interchange on I-380 in North Liberty on Friday, Apr. 13, 2018. Crews worked from 11 P.M. to 4 A.M. to install concrete girders,141 feet long and 60 tons in weight, over I-380. Traffic was stopped for 20 minute periods to allow them to install the beams. (Stephen Mally/The Gazette)
A tractor trailer moves a concrete girder as two sit in place over I-380 southbound lanes while work continues on the Forevergreen Road interchange on I-380 in North Liberty on Friday, Apr. 13, 2018. Crews worked from 11 P.M. to 4 A.M. to install concrete girders,141 feet long and 60 tons in weight, over I-380. Traffic was stopped for 20 minute periods to allow them to install the beams. (Stephen Mally/The Gazette)

NORTH LIBERTY — Motorists traveling along Interstate 380 during the overnight hours this week may have had to stop briefly for ongoing construction of the Forevergreen Road overpass near North Liberty.

Cathy Cutler, transportation planner with the Iowa DOT District 6 office in Cedar Rapids, said the process of moving and setting the many massive beams that go into an overpass bridge requires the temporary closure of the interstate.

Between 11 p.m. and 4 a.m. on Tuesday, Wednesday and Thursday this week, intermittent closures — lasting no more than 20 minutes at a time — occurred on I-380. Five beams — each one nearly as tall as a man and long enough to span multiple lanes of traffic — were placed each night.

Cutler said one more night of intermittent closures is currently planned for beam-related work — starting at 11 p.m. April 18.

The Forevergreen Road project is expected to be complete next year, with work then shifting south to a $300 million rebuild of the Interstate-80/I-380 interchange.

l Comments: (319) 398-8309; mitchell.schmidt@thegazette.com

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