GRANT CO: NB Hwy 151 CLOSED in Platteville.

The crash occurred just prior to 3am.  All lanes were closed for hours,  then one lane opened for a few hours.

As of 7:19am,  ALL lanes are again blocked.

DETOUR:  NB Hwy 151 traffic should exit and go north on Hwy D (Business 151),  continue east back to Hwy 151.