LEBANON — Route 4 closed at the 1-89 Exit 17 northbound off-ramp after a log truck rolled over on Wednesday afternoon, according to police.

A log truck driver reported to police that a mechanical failure prevented him from stopping before turning onto Route 4 eastbound, Lebanon Police Chief Phillip Roberts said at the scene.

The off-ramp of Dartmouth College Highway exit 17 northbound closed Wednesday afternoon after log truck rolled over. JAMES M. PATTERSON / Valley News

The truck rolled over and logs from the truck subsequently struck a SUV travelling east on Route 4.

The driver of the SUV, who was transported to Dartmouth Hitchcock Medical Center for evaluation, is pregnant with twins, the woman’s mother said at the scene.

Route 4 closed at about 2 p.m. and opened to one lane at 3:30 p.m., according to the city’s LebAlert system.

New Hampshire State Police is investigating the incident.

Lebanon Police talk with workers from the Department of Public Works as logs are cleaned up at the scene of a crash that closed Route 4 in Lebanon, N.H., on Wednesday, June 24, 2026. The logs spilled from a truck that overturned while turning east onto Route 4 from Exit 17 northbound off of Interstate 89 in Lebanon, N.H., and struck an SUV. Lebanon Police Chief Phillip Roberts said driver of the log truck was evaluated by paramedics at the scene. JAMES M. PATTERSON / Valley News

Alex Ebrahimi is a staff writer at the Valley News. He can be reached at (603) 727-3212 or by email at aebrahimi@vnews.com.