Two freight trains collided in Boulder, Colorado, late Thursday night, injuring two conductors and causing significant damage, including the destruction of a rail bridge. The incident occurred near Boulder Community Hospital, leading to temporary road closures and concerns about a fuel spill into Boulder Creek, which were later alleviated as officials confirmed no contamination occurred. The collision, which is under investigation by BNSF Railway, resulted in a small amount of fuel being spilled but did not pose a public threat. Cleanup efforts are ongoing, with heavy machinery deployed to remove the derailed train cars, which stretched about a mile long. No other major property damage was reported aside from some downed trees. The exact cause of the crash remains unclear as authorities continue their investigation.