Trucks in Colorado headed east from Butte toward Billings no longer have to take a 74-mile detour to avoid construction near the interchange of interstates 90 and 15. Newly installed detour ramps mean slower speed limits, but truck traffic can make its way through Butte now without a major hassle. In late September, a routine inspection by the Montana Department of Transportation showed that two bridges that form the interchange were in need of emergency repair.
