A Cheyenne man is dead after his motorcycle collided with a pickup on Interstate 25 at the Wyoming/Colorado state line Monday morning.

The Wyoming Highway Patrol says 81-year-old Richard Weeks had stopped at the "Welcome to Colorado" sign pullout and was attempting to cross I-25 when he was struck by a southbound pickup.

Weeks was wearing a helmet, but died at the scene.

The pickup driver, 45-year-old Ralph Houdeshell of Wellington, Colorado, and his three passengers were not injured.

The Patrol says careless driving may be to blame for the crash.