BOISE -- A Boise man was killed Monday night when he crashed into a traffic control sign along Interstate 84.

Idaho State Police say 34-year-old Ryan Devisser was headed east on I-84 when he drove off the right edge of the roadway, slamming into the sign near the Cloverdale overpass.

Devisser was not wearing a seatbelt. He died from his injuries at the scene.

The crash blocked the two right lanes of eastbound I-84 for three-and-a-half hours.

The wreck remains under investigation.